dcbf4ec2a1
Closes #8142. This is not the semantics we want long-term. You can continue to use `#[unsafe_destructor]`, but you'll need to add `#![feature(unsafe_destructor)]` to the crate attributes. [breaking-change]
43 lines
1.1 KiB
Rust
43 lines
1.1 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.
|
|
|
|
#![feature(managed_boxes, unsafe_destructor)]
|
|
|
|
extern crate debug;
|
|
use std::cell::Cell;
|
|
use std::gc::{Gc, GC};
|
|
|
|
struct r {
|
|
i: Gc<Cell<int>>,
|
|
}
|
|
|
|
#[unsafe_destructor]
|
|
impl Drop for r {
|
|
fn drop(&mut self) {
|
|
unsafe {
|
|
self.i.set(self.i.get() + 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn f<T>(_i: Vec<T> , _j: Vec<T> ) {
|
|
}
|
|
|
|
fn main() {
|
|
let i1 = box(GC) Cell::new(0);
|
|
let i2 = box(GC) Cell::new(1);
|
|
let r1 = vec!(box r { i: i1 });
|
|
let r2 = vec!(box r { i: i2 });
|
|
f(r1.clone(), r2.clone());
|
|
//~^ ERROR failed to find an implementation of
|
|
println!("{:?}", (r2, i1.get()));
|
|
println!("{:?}", (r1, i2.get()));
|
|
}
|