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Diffstat (limited to 'Misc/NEWS.d/next/Core and Builtins/2022-01-22-14-39-23.bpo-46417.3U5SfN.rst')
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2022-01-22-14-39-23.bpo-46417.3U5SfN.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-01-22-14-39-23.bpo-46417.3U5SfN.rst b/Misc/NEWS.d/next/Core and Builtins/2022-01-22-14-39-23.bpo-46417.3U5SfN.rst new file mode 100644 index 0000000000..54fe09b7ba --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2022-01-22-14-39-23.bpo-46417.3U5SfN.rst @@ -0,0 +1,5 @@ +Fix a race condition on setting a type ``__bases__`` attribute: the internal +function ``add_subclass()`` now gets the ``PyTypeObject.tp_subclasses`` +member after calling :c:func:`PyWeakref_NewRef` which can trigger a garbage +collection which can indirectly modify ``PyTypeObject.tp_subclasses``. Patch +by Victor Stinner. |