| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // Test that impls on projected self types can resolve overlap, even when the |
| // projections involve specialization, so long as the associated type is |
| // provided by the most specialized impl. |
| |
| #![feature(specialization)] |
| |
| trait Assoc { |
| type Output; |
| } |
| |
| default impl<T> Assoc for T { |
| type Output = bool; |
| } |
| |
| impl Assoc for u8 { type Output = u8; } |
| impl Assoc for u16 { type Output = u16; } |
| |
| trait Foo {} |
| impl Foo for u32 {} |
| impl Foo for <u8 as Assoc>::Output {} |
| impl Foo for <u16 as Assoc>::Output {} |
| |
| fn main() {} |
