1  /* { dg-do compile } */
       2  
       3  int ix;
       4  
       5  void
       6  o6 (int rh)
       7  {
       8    if (rh == 0)
       9      {
      10        ix = 0;
      11        while (ix < 1)
      12  	{
      13  	}
      14  
      15        for (;;)
      16  	if (ix == 0)
      17  	  while (rh < 1)
      18  	    {
      19  	      if (rh == 0)
      20  		{
      21  		  __builtin_unreachable ();
      22  
      23  kp:
      24  		  if (ix == 0)
      25  		    {
      26  hk:
      27  		      ix = 0;
      28  		    }
      29  		}
      30  
      31  	      while (rh < 1)
      32  		if (ix == 0)
      33  		  goto kp;
      34  
      35  	      while (rh < 1)
      36  		{
      37  		}
      38  	    }
      39  	else
      40  	  goto kp;
      41      }
      42  
      43    goto hk;
      44  }