| // 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. |
| |
| #![feature(optin_builtin_traits)] |
| #![feature(specialization)] |
| |
| struct S; |
| struct Z; |
| |
| default impl S {} //~ ERROR inherent impls cannot be default |
| |
| default unsafe impl Send for S {} //~ ERROR impls of auto traits cannot be default |
| default impl !Send for Z {} //~ ERROR impls of auto traits cannot be default |
| |
| trait Tr {} |
| default impl !Tr for S {} //~ ERROR negative impls are only allowed for auto traits |
