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[3.14] gh-134989: Fix Py_RETURN_NONE in the limited C API (GH-135165) (#135178)

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gh-134989: Fix Py_RETURN_NONE in the limited C API (GH-135165)

Fix Py_RETURN_NONE, Py_RETURN_TRUE and Py_RETURN_FALSE macros in the
limited C API 3.11 and older:
Don't treat Py_None, Py_True and Py_False as immortal.
(cherry picked from commit 9258f3da91)

Co-authored-by: Victor Stinner <vstinner@python.org>
This commit is contained in:
Miss Islington (bot) 2025-06-05 15:35:54 +02:00 • committed by GitHub
parent 285c69ea38
commit e11d4a18e1
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3 changed files with 20 additions and 5 deletions
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9
Include/object.h
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@ -654,8 +654,13 @@ PyAPI_DATA(PyObject) _Py_NoneStruct; /* Don't use this directly */
PyAPI_FUNC(int) Py_IsNone(PyObject *x);
#define Py_IsNone(x) Py_Is((x), Py_None)
/* Macro for returning Py_None from a function */
#define Py_RETURN_NONE return Py_None
/* Macro for returning Py_None from a function.
* Only treat Py_None as immortal in the limited C API 3.12 and newer. */
#if defined(Py_LIMITED_API) && Py_LIMITED_API+0 < 0x030c0000
# define Py_RETURN_NONE return Py_NewRef(Py_None)
#else
# define Py_RETURN_NONE return Py_None
#endif
/*
Py_NotImplemented is a singleton used to signal that an operation is