GNU bug report logs - #58334
29.0.50; ASAN heap use after free in gui_produce_glyphs

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Message #26 received at 58334 <at> debbugs.gnu.org (full text, mbox):

From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 58334 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs
Date: Fri, 07 Oct 2022 07:06:31 +0200

Po Lu <luangruo <at> yahoo.com> writes:

> Gerd Möllmann <gerd.moellmann <at> gmail.com> writes:
>
>> Po Lu, is this also something for Haiku?
>
> Haiku calls Lisp in internal hooks (via safe_call) in
> gui_produce_glyphs.  It does not call redisplay itself in input
> callbacks during normal exxecution.
>
> An exception is made when control over user input is transferred to
> another GUI thread as part of a popup or dialog.  xselect.c and xmenu.c
> do pretty much the same thing.

So it can call redisplay in some cases, and we have to protect against
it?

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