rust/src/test/compile-fail/non-exhaustive-match-nested.rs

// 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 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, 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"); }
    }
}