[issue36020] HAVE_SNPRINTF and MSVC std::snprintf support

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

I wrote PR 20889 which removes "snprintf" and "vsnprintf" macros from pyerrors.h. I propose to backport the change to 3.9, but leave 3.8 unchanged.

On Python 3.8 and older, the workaround is to manually undefine the macros:
---
#include <Python.h>
// Undefine macros to work around https://bugs.python.org/issue36020
#undef snprintf
#undef vsnprintf
---

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versions: +Python 3.10, Python 3.9 -Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36020>
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