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:drop 1
12 // error-pattern:drop 2
13 // ignore-cloudabi no std::process
15 /// Structure which will not allow to be dropped twice.
16 struct Droppable<'a>(&'a mut bool, u32);
17 impl<'a> Drop for Droppable<'a> {
20 eprintln!("{} dropped twice", self.1);
21 ::std::process::exit(1);
23 eprintln!("drop {}", self.1);
29 let (mut xv, mut yv) = (false, false);
30 let x = Droppable(&mut xv, 1);
31 let y = Droppable(&mut yv, 2);