1  int g1;
       2  int g2;
       3  
       4  foo ()
       5  {
       6    int i = 1;
       7    int x;
       8  
       9    x = g1;
      10    (*(&g1 + i - 1)) = x + 1;
      11    x = g1;
      12    (*(&g1 + i - 1)) = x + 1;
      13    g1++;
      14  }