[Bug tree-optimization/113012] [13/14 regression] ICE when building xorg-server with -fsanitize=undefined

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113012

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> Note I am not 100% sure the above code is well defined due to subtracting
> one from the allocated array.

and yes this represents exactly what the code does.