boost_1_45_0/libs/serialization/test/test_singleton.cpp

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// test_singleton.cpp: test implementation of run-time casting of void pointers

// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
// 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)
// <gennadiy.rozental@tfn.com>

#include "test_tools.hpp"
#include <boost/serialization/singleton.hpp>

class x {
};

void
test1(const x & x1, const x & x2){
    BOOST_CHECK(& x1 == & x2);
}

int
test_main( int /* argc */, char* /* argv */[] )
{
    const x & x1 = boost::serialization::singleton<x>::get_const_instance();
    const x & x2 = boost::serialization::singleton<x>::get_const_instance();

    BOOST_CHECK(& x1 == & x2);

    test1(
        boost::serialization::singleton<x>::get_const_instance(),
        boost::serialization::singleton<x>::get_const_instance()
    );

    return EXIT_SUCCESS;
}