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