1  #include <netdb.h>
       2  #include <stdio.h>
       3  #include <sys/socket.h>
       4  
       5  static int
       6  do_test (void)
       7  {
       8    int retval = 0;
       9  
      10    struct sockaddr_in6 s;
      11    s.sin6_family = AF_INET6;
      12    s.sin6_port = htons (80);
      13    s.sin6_flowinfo = 0;
      14    s.sin6_addr = (struct in6_addr) IN6ADDR_ANY_INIT;
      15    s.sin6_scope_id = 0;
      16    char buf[1000];
      17    buf[0] = '\0';
      18    int r = getnameinfo((struct sockaddr *) &s, sizeof (s), buf, sizeof (buf),
      19  		      NULL, 0, NI_NUMERICSERV);
      20    printf("r = %d, buf = \"%s\"\n", r, buf);
      21    if (r != 0)
      22      {
      23        puts ("failed without NI_NAMEREQD");
      24        retval = 1;
      25      }
      26  
      27    buf[0] = '\0';
      28    r = getnameinfo((struct sockaddr *) &s, sizeof (s), buf, sizeof (buf),
      29  		  NULL, 0, NI_NUMERICSERV | NI_NAMEREQD);
      30    printf("r = %d, buf = \"%s\"\n", r, buf);
      31    if (r != EAI_NONAME)
      32      {
      33        puts ("did not fail with EAI_NONAME with NI_NAMEREQD set");
      34        retval = 1;
      35      }
      36  
      37    return retval;
      38  }
      39  
      40  #define TEST_FUNCTION do_test ()
      41  #include "../test-skeleton.c"