GNU bug report logs - #76406
31.0.50; Crash with tty child frames

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From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: martin rudalics <rudalics <at> gmx.at>
Cc: 76406 <at> debbugs.gnu.org
Subject: bug#76406: 31.0.50; Crash with tty child frames
Date: Sun, 23 Feb 2025 05:13:54 +0100

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Gerd Möllmann <gerd.moellmann <at> gmail.com> writes:

> martin rudalics <rudalics <at> gmx.at> writes:
>
>>> So I guess I'm missing something important. Any ideas?
>>
>> Not really: I do the same but positioned the yellow frame more to the
>> left so that it is not obscured by the other two child frames.  Both
>> tty-child-frames.el ("/home/martin/temp/tm.el" is my location of your
>> tm.el) and my patch are attached.  I also attach a screenshot
>> immediately before clicking on the Buffer menu.  A complete transcript
>> of the debugging session is below.
>
> So, I think I have now exactly what you are using, and I eventually
> got a segfault somehow, and found out something:
>
> The root frame ended up containing glyphs from a dead menu frame. The
> dead frame's face cache was set to NULL because it had been freed. The
> series of events leading to this is still unclear to me. At least we
> never copy glyphs from a dead frame, that much I can say.
>
> Doesn't look like the assertion you are seeing, but maybe it's somehow
> related.
>
> More in the next round.

Could you please give this a try, Martin?

[0001-Enforce-redisplay-when-deleting-a-child-frame-bug-76.patch (text/x-patch, attachment)]

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