[Bug c++/98975] Infinite loop produces no assembly (including returning) with -O3

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98975

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note C and C++ are differ here. C says only if the return value is used it
becomes undefined while in C++ it is undefined at the point of return.