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// Copyright 2018 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.
// Test that we are able to reinitilize box with moved referent
#![feature(nll)]
static mut ORDER: [usize; 3] = [0, 0, 0];
static mut INDEX: usize = 0;
struct Dropee (usize);
impl Drop for Dropee {
fn drop(&mut self) {
unsafe {
ORDER[INDEX] = self.0;
INDEX = INDEX + 1;
}
}
}
fn add_sentintel() {
unsafe {
ORDER[INDEX] = 2;
INDEX = INDEX + 1;
}
}
fn main() {
let mut x = Box::new(Dropee(1));
*x; // move out from `*x`
add_sentintel();
*x = Dropee(3); // re-initialize `*x`
{x}; // drop value
unsafe {
assert_eq!(ORDER, [1, 2, 3]);
}
}
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