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// Copyright (C) 2003, Fernando Luis Cacciola Carballal.

//

// Use, modification, and distribution is subject to the Boost Software

// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

//

// See http://www.boost.org/lib/optional for documentation.

//

// You are welcome to contact the author at:

// fernando_cacciola@hotmail.com

//

#include "boost/optional.hpp"

//

// THIS TEST SHOULD FAIL TO COMPILE

//

void test_deep_constantness()

{

boost::optional<int> opt ;

boost::optional<int> const copt ;

*copt = opt ; // Cannot assign to "int const&"

}