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bug#56108: 29.0.50; ASAN use-after-free in re_match_2_internal


From: Gerd Möllmann
Subject: bug#56108: 29.0.50; ASAN use-after-free in re_match_2_internal
Date: Thu, 23 Jun 2022 07:53:29 +0200

On 22. Jun 2022, 18:20 +0200, Eli Zaretskii <eliz@gnu.org>, wrote:

I think the next step is to add the missing freeze_pattern calls and
see if that fixes the problem?
I think the missing freezes are 100% a bug, and they should be fixed.

Do you want to do that or should I? 

(BTW, I just now noticed the "->buf" at the end of the "bufp = &compile_pattern (regexp,...)" that I complained about.   That explains it.  Nice :-/.)

Another side question, if I may: Have you perhaps heard of someone producing a static call graph for Emacs, or better yet, specific functions in Emacs?  Maybe using objdump -D or something similar? 

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