1 // Copyright 2015 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 // Regression test for #22886.
14 let mut iter = Newtype(Some(Box::new(0)));
15 let saved = iter.next().unwrap();
16 println!("{}", saved);
18 println!("{}", saved);
21 struct Newtype(Option<Box<usize>>);
23 impl<'a> Iterator for Newtype { //~ ERROR E0207
24 type Item = &'a Box<usize>;
26 fn next(&mut self) -> Option<&Box<usize>> {