re_node_set_alloc
err = re_node_set_alloc (&eclosure, dfa->edests[node].nelem + 1);
err = re_node_set_alloc (&newstate->non_eps_nodes, newstate->nodes.nelem);
err = re_node_set_alloc (&state->inveclosure, dest_nodes->nelem);
*err = re_node_set_alloc (&next_nodes, state->nodes.nelem + 1);
err = re_node_set_alloc (&new_nodes, cur_nodes->nelem);
err = re_node_set_alloc (&follows, ndests + 1);