blob: d258a4a8b3325b18149d8dd641a3c6d49534a46b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
// 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
//~| NOTE unconstrained lifetime parameter
type Item = &'a Box<usize>;
fn next(&mut self) -> Option<&Box<usize>> {
self.0.as_ref()
}
}
fn main() { }
|
