1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // error-pattern:unwind happens
12 // error-pattern:drop 3
13 // error-pattern:drop 2
14 // error-pattern:drop 1
15 // ignore-cloudabi no std::process
17 /// Structure which will not allow to be dropped twice.
18 struct Droppable<'a>(&'a mut bool, u32);
19 impl<'a> Drop for Droppable<'a> {
22 eprintln!("{} dropped twice", self.1);
23 ::std::process::exit(1);
25 eprintln!("drop {}", self.1);
30 fn may_panic<'a>() -> Droppable<'a> {
31 panic!("unwind happens");
34 fn mir<'a>(d: Droppable<'a>) {
35 let (mut a, mut b) = (false, false);
36 let y = Droppable(&mut a, 2);
37 let x = [Droppable(&mut b, 1), y, d, may_panic()];
42 mir(Droppable(&mut c, 3));