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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: attribute warn_unused_result
Date: Sat, 05 Feb 2011 11:18:57 +0200
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> Date: Fri, 04 Feb 2011 16:11:36 -0800
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: emacs-devel@gnu.org
> 
> Is there ever a good reason to ignore the return value from
> chdir?

IMO, only if the chdir is part of handling a fatal error.