// Copyright 2012-2014 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. #![feature(box_patterns)] #![feature(box_syntax)] enum IntList { Cons(isize, Box), Nil } fn tail(source_list: &IntList) -> IntList { match source_list { &IntList::Cons(val, box ref next_list) => tail(next_list), &IntList::Cons(val, box Nil) => IntList::Cons(val, box Nil), //~^ ERROR cannot move out of borrowed content //~^^ WARN pattern binding `Nil` is named the same as one of the variants of the type `IntList` _ => panic!() } } fn main() {}