[issue1653457] Python misbehaves when installed in / (patch attached)

[Chris Webb]

Chris Webb <chris_arachsys at users.sourceforge.net> added the comment:

Fortunately reduce() is static within getpath.c, so it should only be
necessary to check the handful of callers in there. I've done this, and
am reasonably sure it doesn't break anything.

In addition, I've given this patch quite a bit of empirical testing, at least under linux/glibc. This has been a persistent bug in Python since
2004 or earlier, and I've needed the attached fix on our Python builds
on all our production servers since then, rebasing for every release
from 2.4 to the new 2.7. (Our machines don't have legacy /usr dirs so
Python is installed to /bin and /lib.)

The exact patch I'm using right now against 2.7 is attached, but it's
essentially identical to the one I submitted originally against Python
2.4, and later against Python 2.5.

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keywords: +patch
Added file: http://bugs.python.org/file17945/paths.patch

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