https://github.com/python/cpython/commit/0036565e81b9580d645862bcc6249e2ae4f1fd03
commit: 0036565e81b9580d645862bcc6249e2ae4f1fd03
branch: main
author: Victor Stinner <[email protected]>
committer: vstinner <[email protected]>
date: 2026-06-05T13:43:05Z
summary:
gh-146527: Fix memory leak in _PyGC_Fini() (#150969)
Free generation_stats allocated by _PyGC_Init().
Fix Python/gc.c: Python/gc_free_threading.c was already fixed.
files:
M Python/gc.c
diff --git a/Python/gc.c b/Python/gc.c
index 54ac1b089e503d..201c621bcc3cb9 100644
--- a/Python/gc.c
+++ b/Python/gc.c
@@ -1876,6 +1876,8 @@ _PyGC_Fini(PyInterpreterState *interp)
GCState *gcstate = &interp->gc;
Py_CLEAR(gcstate->garbage);
Py_CLEAR(gcstate->callbacks);
+ PyMem_RawFree(gcstate->generation_stats);
+ gcstate->generation_stats = NULL;
/* Prevent a subtle bug that affects sub-interpreters that use basic
* single-phase init extensions (m_size == -1). Those extensions cause
objects
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