Language/Overview/Privacy/private_and_public_t17.dart

// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/**
 * @assertion Dart supports two levels of privacy: public and private. 
 * A declaration is private iff its name is private, otherwise it is public.
 * A name q is private iff any one of the identifiers that comprise q is 
 * private, otherwise it is public.
 * An identifier is private iff it begins with an underscore (the _ character) 
 * otherwise it is public.
 * A declaration m is accessible to library L if m is declared in L or if m is 
 * public.
 * @description Checks that label names can begin with an underscore and are 
 * still usable.
 * @author iefremov
 */

main() {
  _: {
    break _;
    throw 1;
  }
}