// 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 Space, tab and line terminators characters are allowed between
/// tokens.
/// @description Checks that different whitespace characters and line terminators
/// are allowed in boolean expressions.
/// @author hlodvig


main() {
  bool b;

  b = (false || false);
  b = (false	||	false);
  b = (false
  ||
  false);

  b = (true && true);
  b = (true	&&	true);
  b = (true
  &&
  true);
}
