ref: d5ba7a743aa0a71de85332b403452fa3d498cb35
dir: /tests/cc/execute/0192-ptrcmp.c/
struct ptrs { unsigned char *rp; unsigned char *wp; }; struct ptrs iob[2]; int main() { static unsigned char buf[10]; iob[0].rp = buf; iob[0].wp = buf+2; return (&iob[0])->rp >= (&iob[0])->wp; }