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gh-92135: Fix _Py_reinterpret_cast() for const (#92138)

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Fix C++ compiler warnings on cast macros, like _PyObject_CAST(), when
casting a constant expression to a non constant type: use
const_cast<> in C++.

* In C++, Py_SAFE_DOWNCAST() now uses static_cast<> rather than
  reinterpret_cast<>.
* Add tests to the _testcppext C++ extension.
* test_cppext no longer captures stdout in verbose mode.
This commit is contained in:
Victor Stinner 2022-05-02 17:07:00 +02:00 • committed by GitHub
parent b11243e85e
commit 031397063e
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5 changed files with 62 additions and 14 deletions
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4
Include/objimpl.h
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@ -182,9 +182,9 @@ PyAPI_FUNC(void) PyObject_GC_UnTrack(void *);
PyAPI_FUNC(void) PyObject_GC_Del(void *);
#define PyObject_GC_New(type, typeobj) \
_Py_reinterpret_cast(type*, _PyObject_GC_New(typeobj))
_Py_reinterpret_cast(type*, _PyObject_GC_New(typeobj))
#define PyObject_GC_NewVar(type, typeobj, n) \
_Py_reinterpret_cast(type*, _PyObject_GC_NewVar((typeobj), (n)))
_Py_reinterpret_cast(type*, _PyObject_GC_NewVar((typeobj), (n)))
PyAPI_FUNC(int) PyObject_GC_IsTracked(PyObject *);
PyAPI_FUNC(int) PyObject_GC_IsFinalized(PyObject *);