// Copyright 2014 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 Lexer<'a> { input: &'a str, } impl<'a> Lexer<'a> { pub fn new(input: &'a str) -> Lexer<'a> { Lexer { input: input } } } struct Parser<'a> { lexer: &'a mut Lexer<'a>, } impl<'a> Parser<'a> { pub fn new(lexer: &'a mut Lexer) -> Parser<'a> { Parser { lexer: lexer } //~^ ERROR cannot infer an appropriate lifetime } } fn main() {}