// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. pub struct _X([u8]); impl std::ops::Deref for _X { type Target = [u8]; fn deref(&self) -> &[u8] { &self.0 } } pub fn _g(x: &_X) -> &[u8] { x } fn main() { }