| // Copyright 2015 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. |
| |
| struct Wrapper<'a, T: ?Sized>(&'a mut i32, T); |
| |
| impl<'a, T: ?Sized> Drop for Wrapper<'a, T> { |
| fn drop(&mut self) { |
| *self.0 = 432; |
| } |
| } |
| |
| fn main() { |
| let mut x = 0; |
| { |
| let wrapper = Box::new(Wrapper(&mut x, 123)); |
| let _: Box<Wrapper<Send>> = wrapper; |
| } |
| assert_eq!(432, x) |
| } |
