GNU bug report logs - #17771
24.3.91; SIGSEGV in cleanup_vector

Previous Next

Package: emacs;

Reported by: Stephen Berman <stephen.berman <at> gmx.net>

Date: Fri, 13 Jun 2014 09:14:02 UTC

Severity: normal

Tags: moreinfo

Merged with 16140, 16414, 17071, 17602

Found in versions 24.3.50, 24.3.91, 24.4.50

Fixed in version 24.3.93

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

Full log

View this message in rfc822 format

From: Dmitry Antipov <dmantipov <at> yandex.ru>
To: Stephen Berman <stephen.berman <at> gmx.net>
Cc: 17771 <at> debbugs.gnu.org
Subject: bug#17771: 24.3.91; SIGSEGV in cleanup_vector
Date: Wed, 18 Jun 2014 20:24:21 +0400

On 06/18/2014 08:00 PM, Stephen Berman wrote:

> As I said in my followup to your patch, it did indeed prevent Emacs from
> crashing, but with it C-g could not interrupt HELLO being displayed.

This can be explained. To process C-g, C code should call QUIT. If we
compare it with OS, this is something like "check for pending interrupts
and process them if needed". That's why, for example, (make-list 10000000 0)
can be interrupted with C-g. Emacs do QUIT in its own C code, but it's
impossible to arrange QUIT in external library. So, if there is a
very busy loop somewhere in fontconfig, you can't interrupt it with C-g.

Dmitry
This bug report was last modified 10 years and 287 days ago.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.