79 lines
1.6 KiB
Rust
79 lines
1.6 KiB
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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// same as resource-cycle2, but be sure to give r multiple fields...
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// Don't leak the unique pointers
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use std::cast;
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struct U {
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a: int,
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b: int,
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c: *int
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}
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struct R {
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v: U,
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w: int,
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x: *int,
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}
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impl Drop for R {
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fn finalize(&self) {
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unsafe {
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let _v2: ~int = cast::transmute(self.v.c);
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// let _v3: ~int = cast::transmute_copy(self.x);
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}
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}
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}
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fn r(v: U, w: int, _x: *int) -> R {
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unsafe {
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R {
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v: v,
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w: w,
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x: cast::transmute(0)
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}
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}
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}
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struct t(Node);
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struct Node {
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next: Option<@mut t>,
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r: R
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}
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pub fn main() {
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unsafe {
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let i1 = ~0xA;
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let i1p = cast::transmute_copy(&i1);
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cast::forget(i1);
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let i2 = ~0xA;
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let i2p = cast::transmute_copy(&i2);
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cast::forget(i2);
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let u1 = U {a: 0xB, b: 0xC, c: i1p};
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let u2 = U {a: 0xB, b: 0xC, c: i2p};
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let x1 = @mut t(Node{
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next: None,
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r: r(u1, 42, i1p)
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});
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let x2 = @mut t(Node{
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next: None,
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r: r(u2, 42, i2p)
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});
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x1.next = Some(x2);
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x2.next = Some(x1);
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}
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}
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