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1a4d82fc | 1 | // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
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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 | ||
54a0048b | 11 | // Make sure specialization cannot change impl polarity |
b039eaaf | 12 | |
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13 | #![feature(optin_builtin_traits)] |
14 | #![feature(specialization)] | |
b039eaaf | 15 | |
2c00a5a8 | 16 | auto trait Foo {} |
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17 | |
18 | impl<T> Foo for T {} | |
19 | impl !Foo for u8 {} //~ ERROR E0119 | |
20 | ||
2c00a5a8 | 21 | auto trait Bar {} |
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22 | |
23 | impl<T> !Bar for T {} | |
24 | impl Bar for u8 {} //~ ERROR E0119 | |
25 | ||
26 | fn main() {} |