// Copyright 2012 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. enum ast { num(uint), add(&'self ast<'self>, &'self ast<'self>) } fn mk_add_bad1(x: &'a ast<'a>, y: &'b ast<'b>) -> ast<'a> { add(x, y) //~ ERROR cannot infer an appropriate lifetime } fn main() { }