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https://github.com/rust-lang/rust
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30 lines
535 B
Rust
30 lines
535 B
Rust
// run-pass
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#![allow(unused_imports)]
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// Regression test for issue #22246 -- we should be able to deduce
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// that `&'a B::Owned` implies that `B::Owned : 'a`.
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// pretty-expanded FIXME #23616
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#![allow(dead_code)]
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use std::ops::Deref;
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pub trait ToOwned: Sized {
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type Owned: Borrow<Self>;
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fn to_owned(&self) -> Self::Owned;
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}
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pub trait Borrow<Borrowed> {
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fn borrow(&self) -> &Borrowed;
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}
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pub struct Foo<B:ToOwned> {
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owned: B::Owned
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}
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fn foo<B:ToOwned>(this: &Foo<B>) -> &B {
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this.owned.borrow()
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}
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fn main() { }
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