1  extern void abort (void);
       2  
       3  unsigned int a, b = 1, c;
       4  
       5  void __attribute__ ((noinline))
       6  foo (int x)
       7  {
       8    if (x != 5)
       9      abort ();
      10  }
      11  
      12  int
      13  main ()
      14  {
      15    unsigned int d, e;
      16    for (d = 1; d < 5; d++)
      17      if (c)
      18        a = b;
      19    a = b;
      20    e = a << 1;
      21    if (e)
      22      e = (e << 1) ^ 1;
      23    foo (e);
      24    return 0;
      25  }