29 lines
815 B
Rust
29 lines
815 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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use std::unstable;
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struct Point {x: int, y: int, z: int}
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fn f(p: &mut Point) { p.z = 13; }
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pub fn main() {
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unsafe {
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let x = Some(unstable::sync::Exclusive::new(true));
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match x {
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Some(ref z) if z.with(|b| *b) => {
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z.with(|b| assert!(*b));
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},
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_ => fail!()
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}
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}
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}
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