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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
struct r {
b: @mut int,
}
#[unsafe_destructor]
impl Drop for r {
fn drop(&mut self) {
*(self.b) += 1;
}
}
fn r(b: @mut int) -> r {
r {
b: b
}
}
pub fn main() {
let b = @mut 0;
{
let _p = Some(r(b));
}
assert_eq!(*b, 1);
}
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