gcc/testsuite/gcc.c-torture/execute/921112-1.c

   1 union u {
   2   struct { int i1, i2; } t;
   3   double d;
   4 } x[2], v;
   5
   6 f (x, v)
   7      union u *x, v;
   8 {
   9   *++x = v;
  10 }
  11
  12 main()
  13 {
  14   x[1].t.i1 = x[1].t.i2 = 0;
  15   v.t.i1 = 1;
  16   v.t.i2 = 2;
  17   f (x, v);
  18   if (x[1].t.i1 != 1 || x[1].t.i2 != 2)
  19     abort ();
  20   exit (0);
  21 }