numpy/numpy — pull request #324 by walshb (2012-06-27 20:03:10+00:00)
Title: Fix two instances of memcpy with overlapping source and destination.

Found using valgrind -- but looks like Nathaniel Smith already worked that one out by intuition:

http://mail.scipy.org/pipermail/numpy-discussion/2012-June/063010.html

There are a few more memcpy calls in that file, but I think they're innocent until proven guilty.