2012-12-11 02:32:48 +01:00
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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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2012-08-16 03:46:55 +02:00
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struct r {
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2012-09-07 04:40:15 +02:00
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i: @mut int,
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2012-11-14 07:22:37 +01:00
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}
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2013-03-21 02:18:57 +01:00
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#[unsafe_destructor]
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2013-02-14 20:47:00 +01:00
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impl Drop for r {
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2013-06-21 03:06:13 +02:00
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fn drop(&self) {
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2013-03-21 02:18:57 +01:00
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unsafe {
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*(self.i) += 1;
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}
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2012-11-14 07:22:37 +01:00
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}
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2012-05-16 05:33:59 +02:00
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}
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2011-09-28 07:40:15 +02:00
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2012-09-06 00:58:43 +02:00
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fn r(i: @mut int) -> r {
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r {
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i: i
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}
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}
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2013-02-02 04:43:17 +01:00
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pub fn main() {
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2012-03-27 03:35:18 +02:00
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let i = @mut 0;
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2011-11-18 16:15:46 +01:00
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// Even though these look like copies, they are guaranteed not to be
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{
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let a = r(i);
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2013-02-15 11:44:18 +01:00
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let b = (a, 10);
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let (c, _d) = b;
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2013-07-16 19:08:08 +02:00
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info!(c);
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2011-11-18 16:15:46 +01:00
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}
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2013-05-19 04:02:45 +02:00
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assert_eq!(*i, 1);
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2011-11-18 16:15:46 +01:00
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}
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