38 lines
780 B
Rust
38 lines
780 B
Rust
// 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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struct r {
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b: @mut int,
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}
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#[unsafe_destructor]
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impl Drop for r {
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fn finalize(&self) {
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unsafe {
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*(self.b) += 1;
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}
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}
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}
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fn r(b: @mut int) -> r {
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r {
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b: b
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}
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}
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pub fn main() {
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let b = @mut 0;
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{
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let p = Some(r(b));
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}
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assert!(*b == 1);
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}
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