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 #![feature(unsafe_destructor)]
13 // Ensures that class dtors run if the object is inside an enum
18 type closable<'a> = &'a Cell<bool>;
20 struct close_res<'a> {
26 impl<'a> Drop for close_res<'a> {
32 fn close_res(i: closable) -> close_res {
38 enum option<T> { none, some(T), }
40 fn sink(_res: option<close_res>) { }
43 let c = &Cell::new(true);
45 sink(option::some(close_res(c)));