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src/test/run-pass/issue-18906.rs
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src/test/run-pass/issue-18906.rs
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// Copyright 2014 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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pub trait Borrow<Sized? Borrowed> {
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fn borrow(&self) -> &Borrowed;
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}
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impl<T: Sized> Borrow<T> for T {
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fn borrow(&self) -> &T { self }
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}
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trait Foo {
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fn foo(&self, other: &Self);
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}
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fn bar<K, Q>(k: &K, q: &Q) where K: Borrow<Q>, Q: Foo {
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q.foo(k.borrow())
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}
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struct MyTree<K>;
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impl<K> MyTree<K> {
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// This caused a failure in #18906
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fn bar<Q>(k: &K, q: &Q) where K: Borrow<Q>, Q: Foo {
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q.foo(k.borrow())
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}
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}
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fn main() {}
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