rust/src/test/run-pass/resource-cycle2.rs
2012-12-10 17:32:58 -08:00

64 lines
1.2 KiB
Rust

// 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.
// Don't leak the unique pointers
type u = {
a: int,
b: int,
c: *int
};
struct r {
v: u,
}
impl r : Drop {
fn finalize(&self) {
unsafe {
let v2: ~int = cast::reinterpret_cast(&self.v.c);
}
}
}
fn r(v: u) -> r {
r {
v: v
}
}
enum t = {
mut next: Option<@t>,
r: r
};
fn main() unsafe {
let i1 = ~0xA;
let i1p = cast::reinterpret_cast(&i1);
cast::forget(move i1);
let i2 = ~0xA;
let i2p = cast::reinterpret_cast(&i2);
cast::forget(move i2);
let u1 = {a: 0xB, b: 0xC, c: i1p};
let u2 = {a: 0xB, b: 0xC, c: i2p};
let x1 = @t({
mut next: None,
r: r(u1)
});
let x2 = @t({
mut next: None,
r: r(u2)
});
x1.next = Some(x2);
x2.next = Some(x1);
}