symbol_cmp (void const *a, void const *b)
{
  return location_cmp ((*(symbol * const *)a)->location,
                       (*(symbol * const *)b)->location);
}
symbol_cmp (void const *a, void const *b)
{
  return location_cmp ((*(symbol * const *)a)->location,
                       (*(symbol * const *)b)->location);
}