From 8525c9375f25e6ec0c0b5dfcab464703f6e78082 Mon Sep 17 00:00:00 2001
From: Valery Fedorenko <federicovalenso@gmail.com>
Date: Tue, 5 Nov 2024 20:34:33 +0300
Subject: [PATCH] gh-126238: Fix possible null pointer dereference of freevars
 in _PyCompile_LookupArg (#126239)

* Replace Py_DECREF by Py_XDECREF

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
---
 Python/compile.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Python/compile.c b/Python/compile.c
index 4dcb9a1b5acdb3..ecca9b0b06ecf7 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -901,7 +901,7 @@ _PyCompile_LookupArg(compiler *c, PyCodeObject *co, PyObject *name)
             c->u->u_metadata.u_name,
             co->co_name,
             freevars);
-        Py_DECREF(freevars);
+        Py_XDECREF(freevars);
         return ERROR;
     }
     return arg;