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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. | |
4 | // | |
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. | |
10 | ||
11 | // Ensures that class dtors run if the object is inside an enum | |
12 | // variant | |
13 | ||
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14 | use std::cell::Cell; |
15 | ||
16 | type closable<'a> = &'a Cell<bool>; | |
223e47cc | 17 | |
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18 | struct close_res<'a> { |
19 | i: closable<'a>, | |
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20 | |
21 | } | |
22 | ||
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23 | impl<'a> Drop for close_res<'a> { |
24 | fn drop(&mut self) { | |
25 | self.i.set(false); | |
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26 | } |
27 | } | |
28 | ||
29 | fn close_res(i: closable) -> close_res { | |
30 | close_res { | |
31 | i: i | |
32 | } | |
33 | } | |
34 | ||
35 | enum option<T> { none, some(T), } | |
36 | ||
1a4d82fc | 37 | fn sink(_res: option<close_res>) { } |
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38 | |
39 | pub fn main() { | |
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40 | let c = &Cell::new(true); |
41 | sink(option::none); | |
42 | sink(option::some(close_res(c))); | |
43 | assert!(!c.get()); | |
223e47cc | 44 | } |