// 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 declared local variable is also available in the
/// nested scopes.
/// @author rodionov
/// @reviewer iefremov


main() {
  int id;
  {
    id = 1;
    for (int i = 0; i < 1; i++) {
      id = 2;
      try {
        id = 3;
      } catch (ok) {}
    }
  }
}
