[Bug middle-end/111009] [12/13/14 regression] -fno-strict-overflow erroneously elides null pointer checks and causes SIGSEGV on perf from linux-6.4.10

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111009

--- Comment #5 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
For what it's worth bisect pointed at r12-4871-g502ffb1f389011

$ git bisect good
502ffb1f389011b28ee51815242c7397790802d5 is the first bad commit
commit 502ffb1f389011b28ee51815242c7397790802d5
Date:   Tue Nov 2 21:26:44 2021 -0400

    Switch vrp2 to ranger.