1313956Sbapt#include <stddef.h>
2313956Sbapt#include <sys/socket.h>
3313956Sbapt
4313956Sbaptint
5313956Sbaptmain(void)
6313956Sbapt{
7313956Sbapt	struct msghdr	 msg;
8313956Sbapt
9313956Sbapt	msg.msg_control = NULL;
10313956Sbapt	msg.msg_controllen = 0;
11313956Sbapt
12313956Sbapt	return CMSG_FIRSTHDR(&msg) != NULL;
13313956Sbapt}
14