GNU bug report logs - #17406
C-g C-g in GC causes crash

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Package: emacs;

Reported by: rms <at> gnu.org

Date: Mon, 5 May 2014 07:01:04 UTC

Severity: normal

Merged with 17395, 28279

Found in version 25.2

Fixed in version 26.1

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

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#17406; Package emacs. (Mon, 05 May 2014 07:01:04 GMT) Full text and rfc822 format available.
Acknowledgement sent to rms <at> gnu.org:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Mon, 05 May 2014 07:01:05 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Richard Stallman <rms <at> gnu.org>
To: bug-gnu-emacs <at> gnu.org
Subject: C-g C-g in GC causes crash
Date: Mon, 05 May 2014 03:00:06 -0400

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

When GC starts taking a long time, I can easily type C-g C-g during a
GC if I have garbage-collection-messages set.  This stops Emacs as it
should.  When I continue it, it asks (correctly) if I want to abort
and dump core.  I say no, and then it crashes.

A backtrace showed me why: tty_send_additional_strings calls
Fterminal_parameter which calls Fassq which does QUIT;

-- 
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org  www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use Ekiga or an ordinary phone call.
Merged 17406 28279. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Tue, 29 Aug 2017 19:38:01 GMT) Full text and rfc822 format available.
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#17406; Package emacs. (Mon, 18 Sep 2017 05:11:01 GMT) Full text and rfc822 format available.

Message #10 received at 17406 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Eric Hoffman <yuri <at> tenuki.org>
Cc: 17406 <at> debbugs.gnu.org, 28279 <at> debbugs.gnu.org,
 Richard Stallman <rms <at> gnu.org>
Subject: Re: 25.2; repeatable crash when hitting C-g twice
Date: Sun, 17 Sep 2017 22:10:10 -0700

[Message part 1 (text/plain, inline)]
Eli's suggestion looks good. I tweaked his patch slightly to avoid some calls 
and installed the attached into the emacs-26 branch to implement it. Please give 
it a try.

[0001-Avoid-crash-with-C-g-C-g-in-GC.patch (text/x-patch, attachment)]
bug marked as fixed in version 26.1, send any further explanations to 28279 <at> debbugs.gnu.org and Eric Hoffman <yuri <at> tenuki.org> Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Mon, 20 Nov 2017 22:42:03 GMT) Full text and rfc822 format available.
Forcibly Merged 17395 17406 28279. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Mon, 20 Nov 2017 22:45:02 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Tue, 19 Dec 2017 12:24:04 GMT) Full text and rfc822 format available.
This bug report was last modified 6 years and 131 days ago.

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