[Bug c/91232] Adding -fPIC with optimization level > 0 resulting a busy hang in my program

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91232

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Try adding -fwrapv . I think you have an integer overflow.  Also try
-fsanitizer=undefined to get the error at runtime.