/* See http://gcc.gnu.org/ml/gcc/2009-06/msg00072.html. */ extern void abort (void); struct s { unsigned long long a:2; unsigned long long b:40; unsigned long long c:22; }; __attribute__ ((noinline)) void g (unsigned long long a, unsigned long long b) { asm (""); if (a != b) abort (); } __attribute__ ((noinline)) void f (struct s s, unsigned long long b) { asm (""); g (((unsigned long long) (s.b-8)) + 8, b); } int main () { struct s s = {1, 10, 3}; struct s t = {1, 2, 3}; f (s, 10); f (t, 0x10000000002); return 0; }