GNU bug report logs - #11541
24.0.97; Crash when visiting file on OS X 10.7.3

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Packages: emacs, ns;

Reported by: Florian Ebeling <florian.ebeling <at> gmail.com>

Date: Tue, 22 May 2012 16:20:02 UTC

Severity: important

Merged with 11684, 11792, 11801

Found in versions 24.0.97, 24.1.50, 24.1

Done: Jan Djärv <jan.h.d <at> swipnet.se>

Bug is archived. No further changes may be made.

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Message #101 received at 11541 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Florian Ebeling <florian.ebeling <at> gmail.com>
Cc: 11541 <at> debbugs.gnu.org, cyd <at> gnu.org, mituharu <at> math.s.chiba-u.ac.jp
Subject: Re: bug#11541: 24.0.97; Crash when visiting file on OS X 10.7.3
Date: Fri, 01 Jun 2012 11:47:06 +0300

> From: Florian Ebeling <florian.ebeling <at> gmail.com>
> Date: Fri, 1 Jun 2012 08:46:40 +0200
> Cc: mituharu <at> math.s.chiba-u.ac.jp, 11541 <at> debbugs.gnu.org, cyd <at> gnu.org
> 
> One assumption offered earlier was stack corruption.

That assumption was false.  It was based on the garbled value of
font_spec displayed by GDB due to optimizations.  Now that we see a
valid value in an unoptimized build, we should forget about that
assumption.  Something else is at work here.

One possibility is that trying to pass empty objects to NS APIs causes
the crash.  Since the test program didn't yield empty objects, one
possible approach is to try to understand what is the difference
between the test program and ns_findfonts.
This bug report was last modified 12 years and 256 days ago.

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