GNU bug report logs - #23386
Segfault when messing with font-backend

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Package: emacs;

Reported by: Stefan Monnier <monnier <at> IRO.UMontreal.CA>

Date: Wed, 27 Apr 2016 13:14:01 UTC

Severity: normal

Tags: confirmed

Merged with 35803, 36835, 39865

Found in versions 25.0.95, 28.0.50, 25.0.50, 24.1, 24.5, 26.2, 27.0.50

Fixed in version 27.1

Done: Robert Pluim <rpluim <at> gmail.com>

Bug is archived. No further changes may be made.

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From: npostavs <at> users.sourceforge.net
To: Dmitry Antipov <dmantipov <at> yandex.ru>
Cc: Stefan Monnier <monnier <at> IRO.UMontreal.CA>, 23386 <at> debbugs.gnu.org
Subject: bug#23386: Segfault when messing with font-backend
Date: Sun, 10 Jul 2016 16:17:00 -0400

Dmitry Antipov <dmantipov <at> yandex.ru> writes:

> On 07/09/2016 10:11 PM, npostavs <at> users.sourceforge.net wrote:
>
>> Here is a patch that attempts to fix the issue by resetting the font
>> after the backend is changed.  It does let Emacs successfully open the
>> frame with the new font (no funny box characters in the modeline), but
>> I'm not sure if it's the best way of marking the font object invalid.
>
> IMHO the original trick (request to drop font backend when there is a font
> opened by using this backend) is practically meaningless, so why just not
> prohibit it explicitly? For example, with:

Maybe that is a better idea; it does prevent the segfault, and it's
certainly simpler.
This bug report was last modified 5 years and 65 days ago.

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