1  int w[2][2];
       2  
       3  f ()
       4  {
       5    int i, j;
       6  
       7    for (i = 0; i < 2; i++)
       8      for (j = 0; j < 2; j++)
       9        if (i == j)
      10  	w[i][j] = 1;
      11  }
      12  
      13  main ()
      14  {
      15    f ();
      16    if (w[0][0] != 1 || w[1][1] != 1 || w[1][0] != 0 || w[0][1] != 0)
      17      abort ();
      18    exit (0);
      19  }