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8bb4bdeb | 1 | // Copyright 2017 The Rust Project Developers. See the COPYRIGHT |
223e47cc LB |
2 | // file at the top-level directory of this distribution and at |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
3b2f2976 | 11 | #![feature(optin_builtin_traits)] |
041b39d2 | 12 | |
2c00a5a8 XL |
13 | auto trait NotSame {} |
14 | ||
3b2f2976 XL |
15 | impl<A> !NotSame for (A, A) {} |
16 | ||
17 | trait OneOfEach {} | |
18 | ||
19 | impl<A> OneOfEach for (A,) {} | |
20 | ||
21 | impl<A, B> OneOfEach for (A, B) | |
22 | where | |
23 | (B,): OneOfEach, | |
24 | (A, B): NotSame, | |
25 | { | |
223e47cc | 26 | } |
3b2f2976 XL |
27 | |
28 | fn main() {} |