[Bug c++/107798] optimizing -O3, "for" loop condition not checked anymore

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107798

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
When the program accesses (*m)[4]. You involved undefined behavior. Anything
can happen after that.