GNU bug report logs - #58857
28.2; Emacs on macOS seg faults when deleting fullscreen frame

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Package: emacs;

Reported by: Kevin Lin <kkylin <at> alum.mit.edu>

Date: Sat, 29 Oct 2022 04:13:02 UTC

Severity: normal

Tags: moreinfo

Found in version 28.2

Done: Stefan Kangas <stefankangas <at> gmail.com>

Bug is archived. No further changes may be made.

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From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: kkylin <at> alum.mit.edu, 58857 <at> debbugs.gnu.org
Subject: bug#58857: 28.2; Emacs on macOS seg faults when deleting fullscreen frame
Date: Sat, 29 Oct 2022 09:36:11 +0200

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

>> From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
>> (lldb) p emacsframe
>> (frame *) $64 = 0x000000012d811600
>> (lldb) p emacsframe->output_data
>> (output_data) $63 = {
>>   tty = nil
>>   x = nil
>>   w32 = nil
>>   ns = nil
>>   pgtk = nil
>>   haiku = nil
>> }
>
> So you are saying the NS-specific code that is run when Emacs is idle
> somehow references a frame that was deleted?

I interpret the backtrace as saying that it's handling an event
(AppKit`-[NSApplication(NSEvent)
_nextEventMatchingEventMask:untilDate:inMode:dequeue:]), and the GUI
frame has been deleted.

Don't know about the idle part.
This bug report was last modified 2 years and 283 days ago.

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