Subject: Re: bug#58042: 29.0.50; ASAN use-after-free in re_match_2_internal

From: Gerd Möllmann <[email-masked]>
Date: Wed, 05 Oct 2022 13:10:03 +0200

Can somone please help me understand how this works?

Let's say we are in memq called for list L.  Fmemq uses FOR_EACH_TAIL,
which can call maybe_quit, which executes arbitrary Lisp, which can
modify L.  And probably similarly in another 100 places.

I don't get it.