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Re: valgrind warns of regexec.c/memmove buffer read overrun


From: Paul Eggert
Subject: Re: valgrind warns of regexec.c/memmove buffer read overrun
Date: Thu, 15 Mar 2012 07:49:32 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120209 Thunderbird/10.0.1

On 03/15/2012 05:04 AM, Jim Meyering wrote:
> I.e., can valgrind be taught that when a
> memmove call appears to read a few bytes beyond end of the source buffer,
> that it is ok, as long the overrun is consistent with the alignment of
> the source pointer?

Sure, just fix valgrind; this should be easy since it supplies
its own memmove.  See:

https://bugzilla.redhat.com/show_bug.cgi?id=705790

which talks about just such a fix for Fedora 15.

Hmm, but why are you seeing the problem in Fedora *17*?
Is that a regression?  Or was there some problem with the fix?



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