1  typedef __SIZE_TYPE__ size_t;
       2  void *memmove (void *dest, const void *src, size_t count);
       3  size_t strlen (const char *s);
       4  
       5  int
       6  foo (char *param, char *val)
       7  {
       8    if (val)
       9      {
      10        if (val == param + strlen (param) + 1)
      11          val[-1] = '=';
      12        else if (val == param + strlen (param) + 2)
      13          {
      14            val[-2] = '=';
      15            memmove (val - 1, val, strlen (val) + 1);
      16            val--;
      17          }
      18      }
      19    return 0;
      20  }