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Re: coreutils readutmp applies strchr to a non-string


From: Jim Meyering
Subject: Re: coreutils readutmp applies strchr to a non-string
Date: Sat, 12 Jun 2004 10:11:11 +0200

Paul Eggert <address@hidden> wrote:
> coreutils readutmp applies strchr to a buffer that is not
> null-terminated.  This has undefined behavior in C, even if the buffer
> has the char in question.  Here's a patch.
>
> 2004-06-11  Paul Eggert  <address@hidden>
>
>       * readutmp.c (extract_trimmed_name): Don't apply strchr to a
>       non-string; this leads to undefined behavior.

Applied.  Thanks!

BTW, did you find a system on which the existing code misbehaved?
If so, I'd like to document that.




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