hoohack

#include "rbtree.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

RBTree *rbtree_init(int (*rbt_keycmp)(void *, void *))
{
	RBTree *tree = malloc(sizeof(RBTree));
	if (tree == NULL) {
		printf("malloc tree failed\n");