[issue17557] test_getgroups of test_posix can fail on OS X 10.8 if more than 16 groups

[Mateusz Lenik]

Mateusz Lenik added the comment:

I attached a patch implementing a workaround for getgroups(2) call. When compiled for OS X it first calls getgroups with 0 as the first argument to get number of groups and then in subsequent call the code fetches the gids.

This patch applies cleanly on 2.7 and 3.x branches.

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keywords: +patch
nosy: +mlen
Added file: http://bugs.python.org/file30816/getgroups_osx.patch

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