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gh-128759: fix data race in type_modified_unlocked #128764

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merged 2 commits into from
Jan 13, 2025
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gh-128759: fix data race in type_modified_unlocked #128764

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a767905
gh-128759: fix data race in `type_modified_unlocked`
sobolevn Jan 12, 2025
39f1870
Update Objects/typeobject.c
sobolevn Jan 12, 2025
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2 changes: 1 addition & 1 deletion Objects/typeobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1038,7 +1038,7 @@ type_modified_unlocked(PyTypeObject *type)
We don't assign new version tags eagerly, but only as
needed.
*/
if (type->tp_version_tag == 0) {
if (FT_ATOMIC_LOAD_UINT_RELAXED(type->tp_version_tag) == 0) {
return;
}
// Cannot modify static builtin types.
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