clear_node_opt_info(NodeOptInfo* opt)
{
  clear_mml(&opt->len);
  clear_opt_anc_info(&opt->anc);
  clear_opt_exact_info(&opt->exb);
  clear_opt_exact_info(&opt->exm);
  clear_opt_exact_info(&opt->expr);
  clear_opt_map_info(&opt->map);
}
Unknown