1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  
       4  void bar (unsigned long);
       5  
       6  void
       7  foo (unsigned long aul, unsigned m, unsigned i)
       8  {
       9    while (1)
      10      {
      11        aul += i;
      12        i = aul % m;
      13        bar (aul);
      14      }
      15  }