#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(addr_parse_ascii)]
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
fn main() {
    let localhost_v4 = IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1));
    let localhost_v6 = IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
    assert_eq!(IpAddr::parse_ascii(b"127.0.0.1"), Ok(localhost_v4));
    assert_eq!(IpAddr::parse_ascii(b"::1"), Ok(localhost_v6));
}