gcc/testsuite/gcc.c-torture/execute/930208-1.c

   1 typedef union {
   2   long l;
   3   struct { char b3, b2, b1, b0; } c;
   4 } T;
   5
   6 f (T u)
   7 {
   8   ++u.c.b0;
   9   ++u.c.b3;
  10   return (u.c.b1 != 2 || u.c.b2 != 2);
  11 }
  12
  13 main ()
  14 {
  15   T u;
  16   u.c.b1 = 2;
  17   u.c.b2 = 2;
  18   u.c.b0 = ~0;
  19   u.c.b3 = ~0;
  20   if (f (u))
  21     abort();
  22   exit (0);
  23 }