[issue12973] int_pow() implementation is incorrect

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

> Thanks Victor; I just managed to install Clang,
> and it looks I can reproduce the failures.

What is your clang version? I ran ./python -m test -v test_long to check the issue.

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<http://bugs.python.org/issue12973>
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