From: Tomasz Pytel <tompytel@gmail.com>
Date: Tue, 25 Mar 2025 14:49:18 +0000 (-0400)
Subject: gh-131719: add NULL pointer check to `_PyMem_FreeDelayed` (gh-131720)
X-Git-Tag: v3.14.0a7~194
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0a91456ad14bb598646f50bf8f034e8887c0c468;p=thirdparty%2FPython%2Fcpython.git

gh-131719: add NULL pointer check to `_PyMem_FreeDelayed` (gh-131720)
---

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-03-25-13-58-25.gh-issue-131719.zKv98a.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-03-25-13-58-25.gh-issue-131719.zKv98a.rst
new file mode 100644
index 000000000000..ad9175532703
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-03-25-13-58-25.gh-issue-131719.zKv98a.rst
@@ -0,0 +1 @@
+Fix missing NULL check in ``_PyMem_FreeDelayed`` in :term:`free-threaded <free threading>` build.
diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c
index 128539814293..b209808da902 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -1215,7 +1215,9 @@ void
 _PyMem_FreeDelayed(void *ptr)
 {
     assert(!((uintptr_t)ptr & 0x01));
-    free_delayed((uintptr_t)ptr);
+    if (ptr != NULL) {
+        free_delayed((uintptr_t)ptr);
+    }
 }
 
 #ifdef Py_GIL_DISABLED