1  typedef struct {int a, b;} T;
       2  
       3  int h (T *);
       4  T g (T);
       5  
       6  #if COMPILER != 1
       7  h (T *x)
       8  {
       9    if (x->a != 0 || x->b != 1)
      10      abort ();
      11  }
      12  #endif
      13  
      14  #if COMPILER != 2
      15  T
      16  g (T x)
      17  {
      18    if (x.a != 13 || x.b != 47)
      19      abort ();
      20    x.a = 0;
      21    x.b = 1;
      22    h (&x);
      23    return x;
      24  }
      25  #endif
      26  
      27  #if COMPILER != 1
      28  f ()
      29  {
      30    T x;
      31    x.a = 13;
      32    x.b = 47;
      33    g (x);
      34    if (x.a != 13 || x.b != 47)
      35      abort ();
      36    x = g (x);
      37    if (x.a != 0 || x.b != 1)
      38      abort ();
      39  }
      40  #endif
      41  
      42  #if COMPILER != 2
      43  main ()
      44  {
      45    f ();
      46    exit (0);
      47  }
      48  #endif