[issue18513] test.cmath fails on OS/X with gcc-4.8 in non-debug build

[Roundup Robot]

Roundup Robot added the comment:

New changeset 91374660355a by Raymond Hettinger in branch '2.7':
Issue #18513: Add workaround for OS X 10.8 cexp bug that leads to wrong cmath.rect(0.0,-0.0) results.
http://hg.python.org/cpython/rev/91374660355a

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