text: 
  // Copyright 2006-2008 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);
  }
  
  