// Copyright 2013 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 Either { Left(T), Right(U) } struct S(Either); fn main() { match S(Either::Left(5)) { Either::Right(_) => {} //~ ERROR mismatched types: expected `S`, found `Either _ => {} } }