GNU bug report logs - #17975
24.3.92; assertion failure deleting frames with varying names for the same display (and, using multiple X11 connections in that case too)

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Dmitry Antipov <dmantipov <at> yandex.ru>
Cc: Ken Raeburn <raeburn <at> permabit.com>, 17975 <at> debbugs.gnu.org
Subject: bug#17975: 24.3.92; assertion failure deleting frames with varying names for the same display (and, using multiple X11 connections in that case too)
Date: Wed, 09 Sep 2020 13:35:43 +0200

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

> Just for the record: running Motif build with the same args, i.e.
>
> ./src/emacs -Q --eval '(let ((f (selected-frame)))
> (make-frame-on-display ":0") (delete-frame f))'
>
> produces a hard crash caused by an attempt to dereference NULL
> 'Display *' pointer somewhere in Motif's libXm.so library:
>
> Program received signal SIGSEGV, Segmentation fault.
> XFindContext (display=display <at> entry=0x0, rid=14237104,
> context=context <at> entry=-5, data=data <at> entry=0x7ffffffecc80) at

I tried this on Debian bullseye (and Emacs 28) now, and it did not
segfault.  Are you still able to reproduce this bug?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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