bug#52141: 29.0.50; Crash during redisplay

[Eli Zaretskii]

> From: Daniel Martín <mardani29@yahoo.es>
> Cc: Po Lu <luangruo@yahoo.com>,  52141@debbugs.gnu.org
> Date: Sat, 27 Nov 2021 16:59:16 +0100
> 
> Is it possible to run that Emacs instance with some kind of memory
> sanitizer enabled (ASAN, Valgrind...)?  That may help catch the
> potential memory corruption at the point it happens, not at the point
> the garbage collector wants to free it.

It's possible, see etc/DEBUG.  But it may not be practical, since at
least Valgrind slows down Emacs tremendously.  But if this will happen
frequently enough, it's worth the try.