1  struct { unsigned int num; } *numptr;
       2  void notice (int);
       3  void doit (unsigned int *);
       4  
       5  void
       6  rewrite_finalize_block (int x)
       7  {
       8    unsigned int *tmp;
       9    while (tmp = (numptr ? &numptr->num : 0), (tmp ? *tmp : 0) > 0)
      10      {
      11        tmp = (numptr ? &numptr->num : 0);
      12        (void) (*tmp ? 0 : notice (x));
      13        doit (tmp);
      14      }
      15  }