1  void f (long double, long double);
       2  
       3  struct s {
       4    char c;
       5    struct s *p;
       6  } *p;
       7  
       8  void
       9  g (void)
      10  {
      11    long double ld;
      12    p->p->c = 1;
      13    ld = p->p->c;
      14    f (ld, 1.0L);
      15  }