bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs

[Eli Zaretskii]

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: 58334@debbugs.gnu.org, Po Lu <luangruo@yahoo.com>
> Date: Thu, 06 Oct 2022 20:01:21 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> Is there a way to prevent freeing realized faces?
> >
> > Yes: set inhibit_free_realized_faces non-zero (and record
> > unwind_protect to restore it).
> 
> Thanks.

Actually, I no longer think this will help, because redisplay_internal
sets inhibit_free_realized_faces to zero at the beginning...

Any way of figuring out which face is it that triggers the ASAN?  Is
it one of the basic faces, or some non-basic face?