Ronald Oussoren <ronaldousso...@mac.com> added the comment:

Alexander:  What makes you think r63955 introduced the problem? 
 
Btw. This does not crash the interpreter: the example you give causes an 
exception and cleanly shuts down the interpreter. The exception is unwanted, 
but I wouldn't call it a crash.

The Apple fix for getgroups in python2.6 is odd, it uses an undocumented API 
(getgrouplist_2).

If I read the manpage correctly there is a posixly correct way to implement 
os.getgroups:

* call getgroups(MAX_GROUPS,...)
* if that fails: call getgroups(0,...), the result is groupcount
* allocate an array of groupcount gid_t's and call getgroups(groupcount)

I'll work on a patch that implements this.

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<http://bugs.python.org/issue7900>
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