1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-optimized" } */
       3  
       4  struct barstruct { char const* some_string; };
       5  
       6  void changethepointer(struct barstruct**);
       7  
       8  void baz()
       9  {
      10          struct barstruct bar1;
      11          struct barstruct* barptr = &bar1;
      12          changethepointer(&barptr);
      13          barptr->some_string = "Everything OK";
      14  }
      15  
      16  /* { dg-final { scan-tree-dump "Everything OK" "optimized" } } */