40 lines
1.0 KiB
Rust
40 lines
1.0 KiB
Rust
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// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(rustc_attrs)]
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// error-pattern:drop 1
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use std::io::{self, Write};
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/// Structure which will not allow to be dropped twice.
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struct Droppable(bool, u32);
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impl Drop for Droppable {
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fn drop(&mut self) {
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if self.0 {
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writeln!(io::stderr(), "{} dropped twice", self.1);
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::std::process::exit(1);
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}
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writeln!(io::stderr(), "drop {}", self.1);
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self.0 = true;
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}
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}
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#[rustc_mir]
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fn mir(d: Droppable){
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loop {
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let x = d;
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break;
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}
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}
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fn main() {
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mir(Droppable(false, 1));
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panic!();
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}
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