Make IO::Buffered#buffer_size=
idempotent (#14855)
#12247
linux.yml
on: push
x86_64-musl-test
35m 45s
x86_64-gnu-test-preview_mt
5m 43s
check_format
1m 35s
deploy_api_docs
2m 15s
Matrix: x86_64-gnu-test