// 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 A variable declaration statement declares a new local variable.
 *   localVariableDeclaration:
 *     initializedVariableDeclaration ’;’
 *   ;
 * @description Checks that a variable is introduced into the scope after a
 * variable declaration statement is evaluated, and the name of this variable
 * cannot be used in its initialization.
 * @compile-error
 * @author iefremov
 */

main() {
  var x;
  Function f = () {x = f;};
}
