message: Show hint information
diff: @@ -16,7 +16,7 @@ use header::fcntl::O_RDONLY;
  use header::netinet_in::{in_addr, sockaddr_in};
  use header::stdlib::atoi;
  use header::strings::strcasecmp;
  -use header::sys_socket::constants::AF_INET;
  +use header::sys_socket::constants::{AF_UNSPEC, AF_INET};
  use header::sys_socket::{sockaddr, socklen_t};
  use header::unistd::SEEK_SET;
  use platform;
  @@ -74,6 +74,7 @@ pub struct servent {
  }
  #[repr(C)]
  +#[derive(Debug)]
  pub struct addrinfo {
  ai_flags: c_int, /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
  ai_family: c_int, /* PF_xxx */
  @@ -670,9 +671,10 @@ pub unsafe extern "C" fn getaddrinfo(
  let hints_opt = if hints.is_null() { None } else { Some(&*hints) };
  eprintln!(
  - "getaddrinfo({:?}, {:?})",
  + "getaddrinfo({:?}, {:?}, {:?})",
  node_opt.map(|c| str::from_utf8_unchecked(c.to_bytes())),
  - service_opt.map(|c| str::from_utf8_unchecked(c.to_bytes()))
  + service_opt.map(|c| str::from_utf8_unchecked(c.to_bytes())),
  + hints_opt
  );
  platform::errno = ENOSYS;
  