// dn_expand should handle offset pointer to 0 byte

#define _BSD_SOURCE

#include <resolv.h>

#include <string.h>

#include "test.h"

int main(void)

{

	unsigned char packet[] = {2,'p','q',0xc0,5,0};

	char name[] = "XXXX";

	int r;

	/* non-empty name with pointer to 0 */

	r = dn_expand(packet, packet+6, packet, name, 3);

	if (r!=5)

		t_error("dn_expand(\"\\2pq\\xc0\\5\", name, 3) returned %d, wanted 5\n", r);

	if (strcmp(name, "pq"))

		t_error("dn_expand(\"\\2pq\\xc0\\5\", name, 3) failed: got \"%s\" name, wanted \"pq\"\n", name);

	/* empty name with pointer to 0 */

	memcpy(packet, "\xc0\2", 3);

	memcpy(name, "XXXX", 5);

	r = dn_expand(packet, packet+3, packet, name, 1);

	if (r!=2)

		t_error("dn_expand(\"\\xc0\\2\", name, 1) returned %d, wanted 2\n", r);

	if (name[0])

		t_error("dn_expand(\"\\xc0\\2\", name, 1) failed: got \"%s\" name, wanted \"\"\n", name);

	return t_status;

}