// 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 If a declaration d named n is in the namespace induced by a 
/// scope S, then d hides any declaration named n that is available in the 
/// lexically enclosing scope of S.
/// @description Checks that a name in the scope of a block statement can hide 
/// a name from a lexically enclosing scope and that does not produce a static 
/// warning.
/// @author msyabro



main() {
  () {
    int x;
    {
      var x;
    }
  }();
}
