3 #![allow(unused_imports)]
4 #![feature(rustc_private)]
6 extern crate rustc_macros;
7 extern crate rustc_serialize;
9 use rustc_macros::{Decodable, Encodable};
10 use rustc_serialize::json;
11 use rustc_serialize::{Decodable, Encodable};
13 #[derive(Encodable, Decodable)]
19 let obj = A { foo: Box::new([true, false]) };
20 let s = json::encode(&obj).unwrap();
21 let obj2: A = json::decode(&s).unwrap();
22 assert_eq!(obj.foo, obj2.foo);