[Bug middle-end/120987] [14/15/16 regression] gdb build with lto triggers use after free since r14-5831-gaae723d360ca26

[vries at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120987

--- Comment #15 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #14)
> I've managed to write a synthetic example:

I've bisect this to:
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commit 4d6132e59327e809a4d4e39fb9465dbd43775b7c
Author: Richard Biener <rguent...@suse.de>
Date:   Thu Aug 10 13:55:36 2023 +0200

    tree-optimization/110963 - more PRE when optimizing for size
...