1  void assert (a) {if (a != 1) abort ();}
       2  
       3  int h1 (int *p) {return *p & 255;}
       4  
       5  void p1 () {int a = 0x01020304; assert (h1 (&a) == 0x04);}
       6  
       7  
       8  int h2 (a) {return a > 0;}
       9  
      10  p2 () {assert (h2 (1));}
      11  
      12  h3 (int *p)
      13  {
      14    *p |= 255;
      15  }
      16  
      17  p3 ()
      18  {
      19    int *p;
      20    h3 (p);
      21  }
      22  
      23  main ()
      24  {
      25    p1 ();
      26    p2 ();
      27    p3 ();
      28    puts ("Compiler test passed.");
      29  }