https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104884
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The behavior is undefined so gcc decides the code is unreachable and optimizes
it that way.
Use -fwrapv if you want it to be defined code. Of use -fsanitize=undefined to
detect the undefined behavior at runtime.