glibc/tests/Regression/bz676039-Resolver-fails-to-return-all-addresses-of/676039-resolver.c

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#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <ctype.h>
void
dump_res (struct addrinfo *p_res)
{
struct addrinfo *iter = p_res;
while (iter != 0)
{
struct sockaddr_in *addr1b;
addr1b = (struct sockaddr_in *) iter->ai_addr;
printf ("getaddrinfo returns: %s %d %d\n", inet_ntoa (addr1b->sin_addr),
iter->ai_family, iter->ai_protocol);
iter = iter->ai_next;
}
}
int
main (int argc, char *argv[])
{
if (argc != 2)
{
printf ("Usage prog hostname\n");
exit (7);
}
struct addrinfo hints, *res;
int error, i;
bzero (&hints, sizeof (hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_family = AF_UNSPEC;
for (i = 0; i < 2; i++)
{
printf ("======== ATTEMPT %d ===============\n", i);
if ((error = getaddrinfo (argv[1], NULL, &hints, &res)))
{
perror ("getaddrinfo");
exit (-1);
}
dump_res (res);
freeaddrinfo (res);
}
/* not such a bad idea ;-) */
return 0;
}