| // Copyright 2016 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 #52057. There is an implied bound |
| // that `I: 'a` where `'a` is the lifetime of `self` in `parse_first`; |
| // but to observe that, one must normalize first. |
| // |
| // run-pass |
| |
| #![feature(nll)] |
| |
| pub trait Parser { |
| type Input; |
| |
| #[inline(always)] |
| fn parse_first(input: &mut Self::Input); |
| } |
| |
| impl<'a, I, P: ?Sized> Parser for &'a mut P |
| where |
| P: Parser<Input = I>, |
| { |
| type Input = I; |
| |
| fn parse_first(_: &mut Self::Input) {} |
| } |
| |
| fn main() {} |
