1  extern int f1 (int, void *);
       2  extern int *f2 (void) __attribute__ ((__const__));
       3  extern int f3 (int, void *);
       4  
       5  int
       6  test (int x, char *y, int z)
       7  {
       8    int b = 0;
       9  
      10    if (x < 1024)
      11      {
      12        y[0] = '\0';
      13  
      14        do
      15  	{
      16  	  switch (f1 (x, y + b))
      17  	    {
      18  	    case -1:
      19  	      if (b == 0)
      20  		return -1;
      21  	      else
      22  		return b;
      23  
      24  	    default:
      25  	      b++;
      26  	    }
      27  	}
      28        while (y[b - 1] != '\0' && y[b - 1] != '\n' && b < z);
      29      }
      30    else
      31      {
      32        do
      33  	{
      34  	  switch (f3 (x, y + b))
      35  	    {
      36  	    case -1:
      37  	      if ((*f2 ()) == 4)
      38  		continue;
      39  	      if (b == 0)
      40  		return -1;
      41  	      else
      42  		return b;
      43  
      44  	    default:
      45  	      b++;
      46  	    }
      47  	}
      48        while (y[b - 1] != '\0' && y[b - 1] != '\n' && b < z);
      49      }
      50    return b;
      51  }