| // Copyright 2017 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. |
| |
| // compile-pass |
| #![feature(optin_builtin_traits)] |
| |
| auto trait NotSame {} |
| |
| impl<A> !NotSame for (A, A) {} |
| |
| trait OneOfEach {} |
| |
| impl<A> OneOfEach for (A,) {} |
| |
| impl<A, B> OneOfEach for (A, B) |
| where |
| (B,): OneOfEach, |
| (A, B): NotSame, |
| { |
| } |
| |
| fn main() {} |
