http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48197
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-18 20:09:18 UTC --- That's true, the step from the 3rd to 4th line is wrong. But that doesn't mean that on LP64 targets it should print 1. On: extern void abort (void); static int y = 0x8000; int main () { if (0LL > (0U ^ (short)0x8000)) abort (); if (0LL > (0U ^ (short)y)) abort (); return 0; } the first test doesn't abort, the second one does.