1  /* { dg-do compile } */
       2  
       3  int
       4  nr (void)
       5  {
       6  }
       7  
       8  void
       9  it (int dl)
      10  {
      11    int vp = 0;
      12  
      13    for (;;)
      14      {
      15        dl = vp ^ nr ();
      16        dl ^= vp;
      17        vp = 1;
      18      }
      19  }