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[3.13] gh-118789: Restore hidden _PyWeakref_ClearRef (GH-118797) (GH-118903)

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gh-118789: Restore hidden `_PyWeakref_ClearRef` (GH-118797)

_PyWeakref_ClearRef was previously exposed in the public C-API, although
it begins with an underscore and is not documented. It's used by a few
C-API extensions. There is currently no alternative public API that can
replace its use.

_PyWeakref_ClearWeakRefsExceptCallbacks is the only thread-safe way to
use _PyWeakref_ClearRef in the free-threaded build. This exposes the C
symbol, but does not make the API public.
(cherry picked from commit db5af7da09)

Co-authored-by: Sam Gross <colesbury@gmail.com>
This commit is contained in:
Miss Islington (bot) 2024-05-10 16:20:22 +02:00 • committed by GitHub
parent 93fce2dcd5
commit bb5bf24226
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3 changed files with 4 additions and 2 deletions
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2
Include/cpython/weakrefobject.h
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@ -40,6 +40,8 @@ struct _PyWeakReference {
#endif
};
PyAPI_FUNC(void) _PyWeakref_ClearRef(PyWeakReference *self);
Py_DEPRECATED(3.13) static inline PyObject* PyWeakref_GET_OBJECT(PyObject *ref_obj)
{
PyWeakReference *ref;

2
Include/internal/pycore_weakref.h
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@ -111,8 +111,6 @@ extern Py_ssize_t _PyWeakref_GetWeakrefCount(PyObject *obj);
// intact.
extern void _PyWeakref_ClearWeakRefsExceptCallbacks(PyObject *obj);
extern void _PyWeakref_ClearRef(PyWeakReference *self);
PyAPI_FUNC(int) _PyWeakref_IsDead(PyObject *weakref);
#ifdef __cplusplus

2
Misc/NEWS.d/next/C API/2024-05-08-20-13-00.gh-issue-118789.m88uUa.rst Normal file
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@ -0,0 +1,2 @@
Restore ``_PyWeakref_ClearRef`` that was previously removed in Python 3.13
alpha 1.