functional/hash/test/link_ext_test.cpp

// Copyright 2006-2009 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)

#define HASH_NAMESPACE boost
#include <boost/functional/hash.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <vector>

int f(std::size_t hash1, int* x1) {
    // Check that HASH_NAMESPACE::hash<int*> works in both files.
    HASH_NAMESPACE::hash<int*> ptr_hasher;
    BOOST_TEST(hash1 == ptr_hasher(x1));

    // Check that std::vector<std::size_t> is avaiable in this file.
    std::vector<std::size_t> x;
    x.push_back(*x1);
    HASH_NAMESPACE::hash<std::vector<std::size_t> > vector_hasher;
    return vector_hasher(x) != HASH_NAMESPACE::hash_value(x);
}