1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  
       4  int h (void);
       5  int i (int);
       6  
       7  struct a b;
       8  struct a
       9  {
      10    unsigned c:4;
      11  } d ()
      12  {
      13    int e, f = b.c << 2, g = h ();
      14    for (; g;)
      15      ;
      16    if (e == 0)
      17      if (f)
      18        i (f);
      19    return b;
      20  }