From: Dmitry Antipov <dmantipov@yandex.ru>
To: Stephen Berman <stephen.berman@gmx.net>
Cc: 17771@debbugs.gnu.org
Subject: bug#17771: 24.3.91; SIGSEGV in cleanup_vector
Date: Wed, 18 Jun 2014 20:24:21 +0400 [thread overview]
Message-ID: <53A1BD35.5090701@yandex.ru> (raw)
In-Reply-To: <87mwdai4xj.fsf@rosalinde.fritz.box>
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
next prev parent reply other threads:[~2014-06-18 16:24 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-13 9:12 bug#17771: 24.3.91; SIGSEGV in cleanup_vector Stephen Berman
2014-06-13 9:41 ` Eli Zaretskii
2014-06-13 9:50 ` Stephen Berman
2014-06-13 12:19 ` Eli Zaretskii
2014-06-13 12:39 ` Stephen Berman
2014-06-13 13:28 ` Eli Zaretskii
2014-06-13 13:34 ` Stephen Berman
2014-06-13 13:44 ` Eli Zaretskii
2014-06-13 13:53 ` Stephen Berman
2014-06-13 13:58 ` Eli Zaretskii
2014-06-13 14:13 ` Stephen Berman
2014-06-13 14:52 ` Eli Zaretskii
2014-06-16 8:02 ` Dmitry Antipov
2014-06-16 10:16 ` Stephen Berman
2014-06-16 12:37 ` Dmitry Antipov
2014-06-16 13:07 ` Stephen Berman
2014-06-16 13:19 ` Dmitry Antipov
2014-06-16 13:32 ` Andreas Schwab
2014-06-16 15:49 ` Stephen Berman
2014-06-16 16:21 ` Dmitry Antipov
2014-06-16 21:34 ` Stephen Berman
2014-06-17 2:25 ` Dmitry Antipov
2014-06-17 13:40 ` Stephen Berman
2014-06-18 12:54 ` Wolfgang Jenkner
2014-06-18 13:50 ` Stephen Berman
2014-06-18 14:01 ` Dmitry Antipov
2014-06-18 16:00 ` Stephen Berman
2014-06-18 16:24 ` Dmitry Antipov [this message]
2014-06-18 17:00 ` Stephen Berman
2014-08-12 3:59 ` Glenn Morris
2014-06-16 15:49 ` Stephen Berman
2014-06-16 16:03 ` Dmitry Antipov
2014-06-16 21:33 ` Stephen Berman
2014-06-17 2:09 ` Dmitry Antipov
2014-06-17 13:41 ` Stephen Berman
2014-06-17 18:11 ` Dmitry Antipov
2014-06-18 13:50 ` Stephen Berman
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