// Copyright 2017 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. #![feature(rustc_attrs)] fn cb<'a,T>(_x: Box, bool))) -> T>) -> T { panic!() } #[rustc_error] fn main() { //~ ERROR compilation successful cb(Box::new(|(k, &(ref v, b))| (*k, v.clone(), b))); }