| // Copyright 2015 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. |
| |
| // Regression test for Issue #20971. |
| |
| // error-pattern:Hello, world! |
| |
| pub trait Parser { |
| type Input; |
| fn parse(&mut self, input: <Self as Parser>::Input); |
| } |
| |
| impl Parser for () { |
| type Input = (); |
| fn parse(&mut self, input: ()) { |
| |
| } |
| } |
| |
| pub fn many() -> Box<Parser<Input=<() as Parser>::Input> + 'static> { |
| panic!("Hello, world!") |
| } |
| |
| fn main() { |
| many() |
| .parse(()); |
| } |
