http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60256
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Well that is because strcpy(s,s) is optimized away as it is a nop.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60256
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Well that is because strcpy(s,s) is optimized away as it is a nop.