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user_id=33168

To answer your question:  
> Aren't the tests being run before release on all major
platforms?

It's difficult to answer.  I think generally the answer is
yes, but it all depends on volunteers.  We are currently
running tests on every checkin: 
http://www.python.org/dev/buildbot/ for both HEAD and 2.4
branch.  BuildBot is a relatively recent addition though. 
On OS X 10.3, we aren't having a problem with mmap(). 
Various developers I know use OS X, not sure which versions
of OS X though.

--
General comments about the patch:  For any solution, we
should strive to make it available if possible (with reason)
on all platforms.  We should attempt to have all versions of
Python behave similarly.  (I'm not trying to imply you
aren't working in this direction, it seems like you are.)

I only notice one patch attached.  Have you been deleting
the others or did you forget to check the litle box?