1  /* { dg-do compile } */
       2  /* { dg-additional-options "-fwrapv" } */
       3  
       4  signed char rq;
       5  
       6  signed char
       7  pu (int tr, int al)
       8  {
       9    signed char x8;
      10  
      11    while (tr != 0)
      12      {
      13        for (x8 = 0; x8 >= 0; x8 += 2)
      14          ;
      15  
      16        rq ^= al ^ 1;
      17        ++x8;
      18        ++tr;
      19      }
      20  
      21    return x8;
      22  }