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

   1 /* { dg-additional-options "-fpermissive" } */
   2
   3 typedef union {
   4   long l;
   5   struct { char b3, b2, b1, b0; } c;
   6 } T;
   7
   8 f (T u)
   9 {
  10   ++u.c.b0;
  11   ++u.c.b3;
  12   return (u.c.b1 != 2 || u.c.b2 != 2);
  13 }
  14
  15 main ()
  16 {
  17   T u;
  18   u.c.b1 = 2;
  19   u.c.b2 = 2;
  20   u.c.b0 = ~0;
  21   u.c.b3 = ~0;
  22   if (f (u))
  23     abort();
  24   exit (0);
  25 }