| // Copyright 2018 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. |
| |
| // Tests that two closures cannot simultaneously have mutable |
| // access to the variable, whether that mutable access be used |
| // for direct assignment or for taking mutable ref. Issue #6801. |
| |
| #![feature(on_unimplemented)] |
| |
| #[rustc_on_unimplemented( |
| message="the message" |
| label="the label" |
| )] |
| trait T {} |
| //~^^^ ERROR expected one of `)` or `,`, found `label` |
| |
| fn main() { } |
