38 lines
1.0 KiB
Rust
38 lines
1.0 KiB
Rust
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// Copyright 2016 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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// Test that we are able to normalize in the list of where-clauses,
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// even if `'a: 'b` is required.
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trait Project<'a, 'b> {
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type Item;
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}
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impl<'a, 'b> Project<'a, 'b> for ()
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where 'a: 'b
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{
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type Item = ();
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}
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// No error here, we have 'a: 'b. We used to report an error here
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// though, see https://github.com/rust-lang/rust/issues/45937.
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fn foo<'a: 'b, 'b>()
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where <() as Project<'a, 'b>>::Item : Eq
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{
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}
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// Here we get an error: we need `'a: 'b`.
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fn bar<'a, 'b>() //~ ERROR cannot infer
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where <() as Project<'a, 'b>>::Item : Eq
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{
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}
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fn main() { }
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