[issue23020] New matmul operator crashes modules compiled with CPython3.4

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc added the comment:

I would not mind the change, but I've always thought the opposite (except on Windows, where the string Python27.dll is stored in the .pyd)

There are traces of this binary compatibility still today in the 3.4 headers:
https://hg.python.org/cpython/file/v3.4.0/Include/pymem.h#l23
"""...if you do use the macros you must recompile your extensions with each Python release..."""
Which seems to imply that extensions usually don't need to be recompiled!

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<http://bugs.python.org/issue23020>
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