rust/src/test/run-pass/issue-10802.rs

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// Copyright 2014 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 DroppableStruct;
static mut DROPPED: bool = false;
impl Drop for DroppableStruct {
fn drop(&mut self) {
unsafe { DROPPED = true; }
}
}
trait MyTrait { }
impl MyTrait for ~DroppableStruct {}
struct Whatever { w: ~MyTrait }
impl Whatever {
fn new(w: ~MyTrait) -> Whatever {
Whatever { w: w }
}
}
fn main() {
{
let f = ~DroppableStruct;
let _a = Whatever::new(~f as ~MyTrait);
}
assert!(unsafe { DROPPED });
}