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gh-127879: Fix data race in _PyFreeList_Push #127880

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Merged
merged 1 commit into from
Dec 12, 2024
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gh-127879: Fix data race in _PyFreeList_Push #127880

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2 changes: 1 addition & 1 deletion Include/internal/pycore_freelist.h
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@ static inline int
_PyFreeList_Push(struct _Py_freelist *fl, void *obj, Py_ssize_t maxsize)
{
if (fl->size < maxsize && fl->size >= 0) {
*(void **)obj = fl->freelist;
FT_ATOMIC_STORE_PTR_RELAXED(*(void **)obj, fl->freelist);
fl->freelist = obj;
fl->size++;
OBJECT_STAT_INC(to_freelist);
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