| // 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. |
| |
| use std::ops::Deref; |
| trait Trait {} |
| |
| struct Struct; |
| |
| impl Deref for Struct { |
| type Target = Trait; |
| fn deref(&self) -> &Trait { |
| unimplemented!(); |
| } |
| } |
| //~^^^^ ERROR cannot infer an appropriate lifetime for lifetime parameter |
| |
| fn main() {} |
