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gh-160208: Fix _Py_ANONYMOUS on C++ #160332

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gh-160208: Fix _Py_ANONYMOUS on C++ #160332

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5 changes: 3 additions & 2 deletions Include/pymacro.h
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Original file line number Diff line number Diff line change
Expand Up @@ -95,12 +95,13 @@
// - MSVC has warning(disable: 4201) "nonstandard extension used : nameless
// struct/union". This is specific enough that we disable it for all of
// Python.h.
// - GCC & clang needs __extension__ before C11
// - GCC & clang needs __extension__ before C11 or on C++.
// To allow unsupported platforms which need other spellings, we use a
// predefined value of _Py_ANONYMOUS if it exists.
#ifndef _Py_ANONYMOUS
# if (defined(__GNUC__) || defined(__clang__)) \
&& !(defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L)
&& (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L \
|| defined(__cplusplus))
# define _Py_ANONYMOUS __extension__
# else
# define _Py_ANONYMOUS
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