1 // Copyright 2014 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.
12 #![allow(unknown_features)]
13 #![feature(box_syntax)]
15 struct DroppableStruct;
17 DroppableVariant1, DroppableVariant2
20 static mut DROPPED: bool = false;
22 impl Drop for DroppableStruct {
24 unsafe { DROPPED = true; }
27 impl Drop for DroppableEnum {
29 unsafe { DROPPED = true; }
33 trait MyTrait { fn dummy(&self) { } }
34 impl MyTrait for Box<DroppableStruct> {}
35 impl MyTrait for Box<DroppableEnum> {}
37 struct Whatever { w: Box<MyTrait+'static> }
39 fn new(w: Box<MyTrait+'static>) -> Whatever {
46 let f: Box<_> = box DroppableStruct;
47 let _a = Whatever::new(box f as Box<MyTrait>);
49 assert!(unsafe { DROPPED });
50 unsafe { DROPPED = false; }
52 let f: Box<_> = box DroppableEnum::DroppableVariant1;
53 let _a = Whatever::new(box f as Box<MyTrait>);
55 assert!(unsafe { DROPPED });