| // Copyright 2015 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. |
| |
| // Regression test for #22886. |
| |
| fn crash_please() { |
| let mut iter = Newtype(Some(Box::new(0))); |
| let saved = iter.next().unwrap(); |
| println!("{}", saved); |
| iter.0 = None; |
| println!("{}", saved); |
| } |
| |
| struct Newtype(Option<Box<usize>>); |
| |
| impl<'a> Iterator for Newtype { //~ ERROR E0207 |
| type Item = &'a Box<usize>; |
| |
| fn next(&mut self) -> Option<&Box<usize>> { |
| self.0.as_ref() |
| } |
| } |
| |
| fn main() { } |
