// run-pass

#![allow(unused_mut)]
#![allow(unused_imports)]
#![feature(rustc_private)]

extern crate rustc_macros;
extern crate rustc_serialize;

use rustc_macros::{Decodable, Encodable};
use rustc_serialize::opaque;
use rustc_serialize::{Decodable, Encodable};

#[derive(Encodable, Decodable, PartialEq, Debug)]
struct UnitLikeStruct;

pub fn main() {
    let obj = UnitLikeStruct;
    let mut encoder = opaque::Encoder::new(vec![]);
    obj.encode(&mut encoder).unwrap();
    let mut decoder = opaque::Decoder::new(&encoder.data, 0);
    let obj2 = UnitLikeStruct::decode(&mut decoder);
    assert_eq!(obj, obj2);
}