[issue35070] test_posix fails on macOS 10.14 Mojave

[Barry A. Warsaw]

Barry A. Warsaw <barry at python.org> added the comment:

I really have no idea what's going on.  I've looked at posixmodule.c and tried to reproduce as best I can in a standalone C program.

In both cases getgroups(0, NULL) returns 15.  In the standalone version, when I then call getgroups(15, grouplist), I again get 15 returned and grouplist is properly filled.  But in posixmodule.c case, I get 1 back group that second call.

I honestly can't see any difference or why this could be happening.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35070>
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