gcc/testsuite/gcc.c-torture/execute/20011121-1.c

   1 struct s
   2 {
   3   int i[18];
   4   char f;
   5   char b[2];
   6 };
   7
   8 struct s s1;
   9
  10 int
  11 main()
  12 {
  13   struct s s2;
  14   s2.b[0] = 100;
  15   __builtin_memcpy(&s2, &s1, ((unsigned int) &((struct s *)0)->b));
  16   if (s2.b[0] != 100)
  17     abort();
  18   exit(0);
  19 }