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1a4d82fc | 1 | // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
223e47cc LB |
2 | // file at the top-level directory of this distribution and at |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
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. | |
10 | ||
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11 | // Regression test for #22886. |
12 | ||
13 | fn crash_please() { | |
14 | let mut iter = Newtype(Some(Box::new(0))); | |
15 | let saved = iter.next().unwrap(); | |
16 | println!("{}", saved); | |
17 | iter.0 = None; | |
18 | println!("{}", saved); | |
19 | } | |
c34b1796 | 20 | |
9346a6ac | 21 | struct Newtype(Option<Box<usize>>); |
c34b1796 | 22 | |
9346a6ac | 23 | impl<'a> Iterator for Newtype { //~ ERROR E0207 |
5bcae85e | 24 | //~| NOTE unconstrained lifetime parameter |
9346a6ac | 25 | type Item = &'a Box<usize>; |
c34b1796 | 26 | |
9346a6ac AL |
27 | fn next(&mut self) -> Option<&Box<usize>> { |
28 | self.0.as_ref() | |
85aaf69f | 29 | } |
223e47cc | 30 | } |
9346a6ac AL |
31 | |
32 | fn main() { } |