1  /* From PR target/16176 */
       2  struct __attribute__ ((packed)) s { struct s *next; };
       3  
       4  struct s * __attribute__ ((noinline))
       5  maybe_next (struct s *s, int t)
       6  {
       7    if (t)
       8      s = s->next;
       9    return s;
      10  }
      11  
      12  int main ()
      13  {
      14    struct s s1, s2;
      15  
      16    s1.next = &s2;
      17    if (maybe_next (&s1, 1) != &s2)
      18      abort ();
      19    exit (0);
      20  }