8000 [3.10] bpo-44378: Fix a compiler warning in Py_IS_TYPE() (GH-26644) by miss-islington · Pull Request #26668 · python/cpython · GitHub
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[3.10] bpo-44378: Fix a compiler warning in Py_IS_TYPE() (GH-26644) #26668

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Merged
merged 1 commit into from
Jun 11, 2021
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[3.10] bpo-44378: Fix a compiler warning in Py_IS_TYPE() (GH-26644) #26668

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bpo-44378: Fix a compiler warning in Py_IS_TYPE() (GH-26644) 
Py_IS_TYPE() no longer uses Py_TYPE() to avoid a compiler warning:
no longer cast "const PyObject*" to "PyObject*".
(cherry picked from commit 304dfec)

Co-authored-by: Victor Stinner <vstinner@python.org>
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@vstinner @miss-islington
vstinner authored and miss-islington committed Jun 11, 2021
commit 23ae2c6b7f62629937f37cb41997211b99432b29
4 changes: 3 additions & 1 deletion Include/object.h
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Expand Up @@ -141,7 +141,9 @@ static inline Py_ssize_t _Py_REFCNT(const PyObject *ob) {


static inline int _Py_IS_TYPE(const PyObject *ob, const PyTypeObject *type) {
return Py_TYPE(ob) == type;
// bpo-44378: Don't use Py_TYPE() since Py_TYPE() requires a non-const
// object.
return ob->ob_type == type;
}
#define Py_IS_TYPE(ob, type) _Py_IS_TYPE(_PyObject_CAST_CONST(ob), type)

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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/C API/2021-06-10-15-22-31.bpo-44378.jGYakF.rst
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@@ -0,0 +1,3 @@
:c:func:`Py_IS_TYPE` no longer uses :c:func:`Py_TYPE` to avoid a compiler
warning: no longer cast ``const PyObject*`` to ``PyObject*``.
Patch by Victor Stinner.
0