src/search/tdestroy.c

#define _GNU_SOURCE
#include <stdlib.h>
#include <search.h>
#include "tsearch.h"

void tdestroy(void *root, void (*freekey)(void *))
{
	struct node *r = root;

	if (r == 0)
		return;
	tdestroy(r->a[0], freekey);
	tdestroy(r->a[1], freekey);
	if (freekey) freekey((void *)r->key);
	free(r);
}