34 lines
988 B
Rust
34 lines
988 B
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 impls on projected self types can resolve overlap, even when the
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// projections involve specialization, so long as the associated type is
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// provided by the most specialized impl.
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#![feature(specialization)]
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trait Assoc {
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type Output;
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}
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default impl<T> Assoc for T {
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type Output = bool;
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}
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impl Assoc for u8 { type Output = u8; }
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impl Assoc for u16 { type Output = u16; }
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trait Foo {}
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impl Foo for u32 {}
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impl Foo for <u8 as Assoc>::Output {}
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impl Foo for <u16 as Assoc>::Output {}
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fn main() {}
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