gcc/testsuite/gcc.c-torture/execute/20020619-1.c

   1 static int ref(void)
   2 {
   3   union {
   4     char c[5];
   5     int i;
   6   } u;
   7
   8   __builtin_memset (&u, 0, sizeof(u));
   9   u.c[0] = 1;
  10   u.c[1] = 2;
  11   u.c[2] = 3;
  12   u.c[3] = 4;
  13
  14   return u.i;
  15 }
  16
  17 int main()
  18 {
  19   int b = ref();
  20   if (b != 0x01020304
  21       && b != 0x04030201)
  22     abort ();
  23   return 0;
  24 }