[issue27987] obmalloc's 8-byte alignment causes undefined behavior

[Florian Weimer]

Florian Weimer <fweimer at redhat.com> added the comment:

This bug causes miscompilation of Python 2.7 by GCC 8 on x86-64 (with no sanitizers enabled, just compiler optimization).

I think this is a fairly conservative way for papering over the issue:

https://mail.python.org/pipermail/python-dev/2018-January/152011.html

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nosy: +fweimer

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<https://bugs.python.org/issue27987>
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