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1a4d82fc | 1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
223e47cc LB |
2 | // file at the top-level directory of this distribution and at |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
c34b1796 AL |
11 | // pretty-expanded FIXME #23616 |
12 | ||
1a4d82fc | 13 | #![allow(unknown_features)] |
c34b1796 | 14 | #![feature(box_syntax, io)] |
970d7e83 | 15 | |
c34b1796 | 16 | use std::io::{self, Write}; |
223e47cc | 17 | |
c34b1796 AL |
18 | fn f(wr: &mut Write) { |
19 | wr.write_all(b"hello").ok().expect("failed"); | |
1a4d82fc JJ |
20 | } |
21 | ||
223e47cc | 22 | fn main() { |
c34b1796 | 23 | let mut wr = box io::stdout() as Box<Write>; |
1a4d82fc | 24 | f(&mut wr); |
223e47cc | 25 | } |