1  /* { dg-do link } */
       2  /* { dg-options "-O -fdump-tree-optimized" } */
       3  
       4  extern void link_error(void);
       5  int i;
       6  int main()
       7  {
       8    int a[4];
       9    if ((char*)&a[1] + 4*i + 4 != (char*)&a[i+2])
      10      link_error();
      11    return 0;
      12  }
      13  
      14  /* { dg-final { scan-tree-dump-not "link_error" "optimized" } } */