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

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Message #131 received at 58334 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Po Lu <luangruo <at> yahoo.com>
Cc: gerd.moellmann <at> gmail.com, 58334 <at> debbugs.gnu.org
Subject: Re: bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs
Date: Fri, 07 Oct 2022 15:27:04 +0300

> From: Po Lu <luangruo <at> yahoo.com>
> Cc: gerd.moellmann <at> gmail.com,  58334 <at> debbugs.gnu.org
> Date: Fri, 07 Oct 2022 20:16:43 +0800
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> > You don't need process_pending_signals, it's enough that some hook
> > calls 'redisplay' from Lisp.
> 
> process_pending_signals called from probably_quit and unblock_input
> calling handle_async_input, and thus gobble_input, is what will run that
> hook calling redisplay, right?

I meant that the problem is much wider and more general: any Lisp can
call redisplay at will.  And we call Lisp from C all over the place.

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