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.
11 #![allow(unknown_features)]
12 #![feature(box_syntax)]
14 struct DroppableStruct;
16 DroppableVariant1, DroppableVariant2
19 static mut DROPPED: bool = false;
21 impl Drop for DroppableStruct {
23 unsafe { DROPPED = true; }
26 impl Drop for DroppableEnum {
28 unsafe { DROPPED = true; }
32 trait MyTrait { fn dummy(&self) { } }
33 impl MyTrait for Box<DroppableStruct> {}
34 impl MyTrait for Box<DroppableEnum> {}
36 struct Whatever { w: Box<MyTrait+'static> }
38 fn new(w: Box<MyTrait+'static>) -> Whatever {
45 let f = box DroppableStruct;
46 let _a = Whatever::new(box f as Box<MyTrait>);
48 assert!(unsafe { DROPPED });
49 unsafe { DROPPED = false; }
51 let f = box DroppableEnum::DroppableVariant1;
52 let _a = Whatever::new(box f as Box<MyTrait>);
54 assert!(unsafe { DROPPED });