1 // Copyright 2012 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.
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.
11 #![allow(unknown_features)]
12 #![feature(box_syntax)]
13 #![feature(unsafe_destructor)]
17 // Resources can't be copied, but storing into data structures counts
18 // as a move unless the stored thing is used afterwards.
24 struct BoxR<'a> { x: r<'a> }
27 impl<'a> Drop for r<'a> {
29 self.i.set(self.i.get() + 1)
33 fn r(i: &Cell<int>) -> r {
40 let i = &Cell::new(0);
42 let _a = BoxR {x: r(i)};
44 assert_eq!(i.get(), 1);
52 let i = &Cell::new(0);
56 assert_eq!(i.get(), 1);
60 let i = &Cell::new(0);
64 assert_eq!(i.get(), 1);
68 let i = &Cell::new(0);
70 let _a: Box<_> = box r(i);
72 assert_eq!(i.get(), 1);
75 fn test_unique_rec() {
76 let i = &Cell::new(0);
78 let _a: Box<_> = box BoxR {
82 assert_eq!(i.get(), 1);