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[Bug libc/12518] memcpy acts randomly (and differently) with overlapping areas
- From: "felipe.contreras at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: Wed, 4 May 2011 15:02:38 +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
--- Comment #27 from Felipe Contreras <felipe.contreras at gmail dot com> 2011-05-04 15:01:05 UTC ---
(In reply to comment #26)
> (In reply to comment #25)
> > So, again, I think we need at least a transition period so that people can
> > detect and fix the issues.
>
> But it may be difficult to detect the issues. For instance, zsh was affected by
> a similar problem (now fixed in CVS only) with the optimized strcpy, but to
> detect the problem, it involves keyboard input:
Yes, it is difficult, that's why I think it should be enabled globally.
BTW. Here's another issue on zsh I found while enabling the memcpy checks:
https://bugzilla.redhat.com/show_bug.cgi?id=698439
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