[Bug c++/90349] missing return with turned on 03 causes infinite loop

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90349

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Darryl Okahata from comment #3)
> If it weren't for the false positives, I'd suggest making this an error when
> optimization is used.  

In C/C++ requires no diagnostic on runtime undefined code ....
as it might not be executed.