[Python-Dev] cpython (3.6): replace usage of Py_VA_COPY with the (C99) standard va_copy (original) (raw)

Thierry Chappuis tchappui at gmail.com
Wed Sep 21 07:22:58 EDT 2016

Hello,

C99 has shown slow adoption by microsoft compilers on windows. On this platform, the support of va_copy() is recent and started with Visual Studio 2013. Therefore, starting from Python 3.5, PY_VA_COPY can now be mapped directly to the native implementation of va_copy(). Hence, the proposed change might be justified.

Best wishes

Thierry

On Wed, Sep 21, 2016 at 12:42pm, Victor Stinner < victor.stinner at gmail.com [victor.stinner at gmail.com] > wrote: I see that the old macro is now an alias to va_copy(). A similar change was done for Py_MEMCPY(). Would it make sense to put these old macros in a new backward_compat.h header, so maybe one day we can remove them? :-)

Maybe we need at least a comment mentionning when (python version) the macro became an alias.

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