GNU bug report logs - #57439
29.0.50; xterm.c:20623: Emacs fatal error: assertion failed: !must_free_data

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Message #8 received at 57439 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Gregor Zattler <grfz <at> gmx.de>
Cc: 57439 <at> debbugs.gnu.org
Subject: Re: bug#57439: 29.0.50; xterm.c:20623: Emacs fatal error: assertion
 failed: !must_free_data
Date: Sat, 27 Aug 2022 09:52:59 +0800

Gregor Zattler <grfz <at> gmx.de> writes:

> Dear Emacs developers,
>
> for me Emacs crashes if build Emacs master with git HEAD on
> 9ba6a7c508cbaed5eeedd56e7df633b722bf86b7 with --with-x-toolkit=no :
>
> 1. emacs -Q
> 2. click on "Options" menu
> 3. crash
>
> originally I did this with an -O3 optimized build, then for
> a hopefully better backtrace I re-build Emacs with -O0
> (which to build took roughly three times the amount of wall
> time than building the optimized one).
>
> This is the full backtrace:

Thanks.  Should be fixed now.

(This is really a bug in Xlib, since XGetEventData shouldn't return True
if the data no longer exists.)

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