| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // A test where we (successfully) close over a reference into |
| // an object. |
| |
| |
| #![allow(unknown_features)] |
| #![feature(box_syntax)] |
| |
| trait SomeTrait { fn get(&self) -> isize; } |
| |
| impl<'a> SomeTrait for &'a isize { |
| fn get(&self) -> isize { |
| **self |
| } |
| } |
| |
| fn make_object<'a,A:SomeTrait+'a>(v: A) -> Box<SomeTrait+'a> { |
| box v as Box<SomeTrait+'a> |
| } |
| |
| fn main() { |
| let i: isize = 22; |
| let obj = make_object(&i); |
| assert_eq!(22, obj.get()); |
| } |
