1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -floop-nest-optimize" } */
       3  
       4  int a[1], c[1];
       5  int b, d, e;
       6  
       7  void
       8  fn1 (int p1)
       9  {
      10    for (;;)
      11      ;
      12  }
      13  
      14  int
      15  fn3 ()
      16  {
      17    for (; e; e++)
      18      c[e] = 2;
      19    for (; d; d--)
      20      a[d] = 8;
      21    return 0;
      22  }
      23  
      24  int fn5 (int);
      25  
      26  int
      27  fn2 ()
      28  {
      29    fn3 ();
      30  }
      31  
      32  void
      33  fn4 ()
      34  {
      35    fn1 (b || fn5 (fn2 ()));
      36  }