2939e483fd
that it produces "outlives" relations for associated types. Add several tests relating to #22246.
36 lines
924 B
Rust
36 lines
924 B
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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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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#![allow(dead_code)]
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use std::ops::Deref;
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pub trait ToOwned {
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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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