mirror of https://github.com/rust-lang/rust
22 lines
426 B
Rust
22 lines
426 B
Rust
// Regression test for #22886.
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fn crash_please() {
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let mut iter = Newtype(Some(Box::new(0)));
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let saved = iter.next().unwrap();
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println!("{}", saved);
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iter.0 = None;
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println!("{}", saved);
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}
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struct Newtype(Option<Box<usize>>);
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impl<'a> Iterator for Newtype { //~ ERROR E0207
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type Item = &'a Box<usize>;
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fn next(&mut self) -> Option<&Box<usize>> {
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self.0.as_ref()
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}
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}
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fn main() { }
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