grammar_current_rule_end (location loc)
{
  /* Put an empty link in the list to mark the end of this rule  */
  grammar_symbol_append (NULL, grammar_end->rhs_loc);
  current_rule->rhs_loc = loc;
}
grammar_current_rule_end (location loc)
{
   
  grammar_symbol_append (NULL, grammar_end->rhs_loc);
  current_rule->rhs_loc = loc;
}