// Copyright 2006-2007 Daniel James.
// Distributed under 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)

#include <boost/unordered_set.hpp>
#include <boost/unordered_map.hpp>

void foo(boost::unordered_set<int>& x1,
        boost::unordered_map<int, int>& x2,
        boost::unordered_multiset<int>& x3,
        boost::unordered_multimap<int, int>& x4)
{
    x1.insert(1);
    x2[2] = 2;
    x3.insert(3);
    x4.insert(std::make_pair(4, 5));
}