// 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 t { a(u), b } enum u { c, d } fn main() { let x = a(c); match x { //~ ERROR non-exhaustive patterns: `a(c)` not covered a(d) => { fail!("hello"); } b => { fail!("goodbye"); } } }