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[3.12] gh-107249: Implement Py_UNUSED() for MSVC (GH-107250) - #127907
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Fix warnings C4100 in Py_UNUSED() when Python is built with "cl /W4".
Example with this function included by Python.h:
static inline unsigned int
PyUnicode_IS_READY(PyObject* Py_UNUSED(op))
{ return 1; }
Without this change, building a C program with "cl /W4" which just
includes Python.h emits the warning:
Include\cpython/unicodeobject.h(199):
warning C4100: '_unused_op': unreferenced formal parameter
This change fix this warning.
(cherry picked from commit 6a43cce)
Co-authored-by: Victor Stinner <vstinner@python.org>
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Fix warnings C4100 in Py_UNUSED() when Python is built with "cl /W4".
Example with this function included by Python.h:
static inline unsigned int PyUnicode_IS_READY(PyObject* Py_UNUSED(op)) { return 1; }Without this change, building a C program with "cl /W4" which just
includes Python.h emits the warning:
This change fix this warning.
(cherry picked from commit 6a43cce)
Co-authored-by: Victor Stinner vstinner@python.org