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[Bug libc/12518] memcpy acts randomly (and differently) with overlapping areas
- From: "oliver.henshaw at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: Sat, 5 Mar 2011 13:28:33 +0000
- Subject: [Bug libc/12518] memcpy acts randomly (and differently) with overlapping areas
- Auto-submitted: auto-generated
- References: <bug-12518-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=12518
Oliver Henshaw <oliver.henshaw at gmail dot com> changed:
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--- Comment #12 from Oliver Henshaw <oliver.henshaw at gmail dot com> 2011-03-05 13:28:28 UTC ---
The thread starting at http://lwn.net/Articles/414496/ may be instructive on
how this can cause problems despite the good(-ish) intentions of the developer.
In short, squashfs used memcpy with data that was known not to overlap but
later changes invalidated this assumption.
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