GNU bug report logs - #74981
29.4; X11 crash when minibuffer text scale is increased greatly

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Message #56 received at 74981 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: gerd.moellmann <at> gmail.com, Po Lu <luangruo <at> yahoo.com>, visuweshm <at> gmail.com,
 74981 <at> debbugs.gnu.org, Joseph Turner <joseph <at> breatheoutbreathe.in>
Subject: Re: bug#74981: 29.4; X11 crash when minibuffer text scale is
 increased greatly
Date: Sat, 1 Mar 2025 20:27:20 -0800

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Joseph Turner <joseph <at> breatheoutbreathe.in>
>> Cc: gerd.moellmann <at> gmail.com,  74981 <at> debbugs.gnu.org,  visuweshm <at> gmail.com
>> Date: Wed, 29 Jan 2025 00:04:19 -0800
>>
>> Eli Zaretskii <eliz <at> gnu.org> writes:
>>
>> >> From: Joseph Turner <joseph <at> breatheoutbreathe.in>
>> >> Cc: gerd.moellmann <at> gmail.com,  74981 <at> debbugs.gnu.org,  visuweshm <at> gmail.com
>> >> Date: Sun, 12 Jan 2025 23:34:50 -0800
>> >>
>> >> Eli Zaretskii <eliz <at> gnu.org> writes:
>> >>
>> >> > One other idea is to change the font you use for the default face,
>> >> > maybe it's the font which causes the problem.  Cairo could also be the
>> >> > culprit, so using a different version of Cairo or a non-Cairo build
>> >> > might solve the problem.
>> >>
>> >> If someone gives me some steps to follow to dig into the bug, I'm happy
>> >> to be the guinea pig.
>> >
>> > To change the default font, invoke Emacs as follows:
>> >
>> >   $ emacs -Q -fn "name of the font here"
>>
>> I downloaded https://typeof.net/Iosevka/ and was able to reproduce the
>> issue even using the Iosevka font.
>>
>> > Do you also need more detailed instructions regarding a different
>> > version of Cairo or building Emacs without Cairo?
>>
>> I compiled Emacs from b1e5f6d6ef8 by running "make", and the bug still
>> happens, so it appears to not be an issue with Cairo.
>>
>> I also tested on my desktop, but I can only reproduce this on my X200
>> Thinkpad, which has a relatively small display.  Maybe that's relevant.
>
> Maybe.  Unfortunately, I don't know how to debug crashes in X11.  If
> someone else does, please speak up.

Maybe Po Lu has some ideas (in Cc).

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