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1 | // Copyright 2013 The Rust Project Developers. See the COPYRIGHT |
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 | ||
1a4d82fc | 11 | #![allow(unknown_features)] |
c34b1796 | 12 | #![feature(box_syntax, old_io, io)] |
970d7e83 | 13 | |
c34b1796 | 14 | use std::io::{self, Write}; |
1a4d82fc JJ |
15 | |
16 | trait Trait { | |
17 | fn f(&self); | |
970d7e83 LB |
18 | } |
19 | ||
c34b1796 | 20 | #[derive(Copy, Clone)] |
1a4d82fc | 21 | struct Struct { |
c34b1796 AL |
22 | x: isize, |
23 | y: isize, | |
970d7e83 LB |
24 | } |
25 | ||
1a4d82fc JJ |
26 | impl Trait for Struct { |
27 | fn f(&self) { | |
28 | println!("Hi!"); | |
970d7e83 LB |
29 | } |
30 | } | |
31 | ||
c34b1796 AL |
32 | fn foo(mut a: Box<Write>) {} |
33 | ||
34 | // FIXME (#22405): Replace `Box::new` with `box` here when/if possible. | |
1a4d82fc | 35 | |
223e47cc | 36 | pub fn main() { |
1a4d82fc | 37 | let a = Struct { x: 1, y: 2 }; |
c34b1796 | 38 | let b: Box<Trait> = Box::new(a); |
1a4d82fc JJ |
39 | b.f(); |
40 | let c: &Trait = &a; | |
41 | c.f(); | |
42 | ||
c34b1796 AL |
43 | let out = io::stdout(); |
44 | foo(Box::new(out)); | |
223e47cc | 45 | } |