radnode_array_space
if(!radnode_array_space(region, add, r->str[addlen])) {
if(!radnode_array_space(region, r->node, addstr[r->len])) {
if(!radnode_array_space(region, com, r->str[common_len]) ||
!radnode_array_space(region, com, addstr[common_len])) {
if(!radnode_array_space(rt->region, n, k[0])) {
if(!radnode_array_space(rt->region, n, byte)) {