symbol_pack (symbol *sym)
{
  aver (sym->content->number != NUMBER_UNDEFINED);
  if (sym->content->class == nterm_sym)
    sym->content->number += ntokens;

  symbols[sym->content->number] = sym->content->symbol;
}
symbol_pack (symbol *sym)
{
  aver (sym->content->number != NUMBER_UNDEFINED);
  if (sym->content->class == nterm_sym)
    sym->content->number += ntokens;

  symbols[sym->content->number] = sym->content->symbol;
}