1  /* { dg-do compile } */
       2  /* { dg-additional-options "-fno-tree-ch -fno-tree-cselim -fno-tree-dominator-opts" } */
       3  
       4  int a, b, c, d, e, f;
       5  
       6  void foo (int x)
       7  {
       8    for (;;)
       9      {
      10        int g = c;
      11        if (x)
      12  	{
      13  	  if (e)
      14  	    while (a)
      15  	      --f;
      16  	}
      17        for (b = 5; b; b--)
      18  	{
      19  	}
      20        if (!g)
      21  	x = 0;
      22      }
      23  }