1  /* { dg-additional-options "-O1" } */
       2  
       3  void
       4  wb (_Complex double jh)
       5  {
       6    _Complex double af = 0.0;
       7  
       8    do
       9      {
      10        af += jh;
      11      }
      12    while (af != 0.0);
      13  }
      14  
      15  _Complex double
      16  o6 (void)
      17  {
      18    _Complex double ba = 0.0;
      19  
      20    for (;;)
      21      {
      22        wb (ba);
      23        ba = 1.0;
      24      }
      25  
      26    return ba;
      27  }