boost/test/detail/workaround.hpp

//  (C) Copyright Gennadiy Rozental 2001.
//  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)
//  See http://www.boost.org/libs/test for the library home page.
//
//!@file
//!@brief contains mics. workarounds
// ***************************************************************************
#ifndef BOOST_TEST_WORKAROUND_HPP_021005GER
#define BOOST_TEST_WORKAROUND_HPP_021005GER
// Boost
#include <boost/config.hpp> // compilers workarounds and std::ptrdiff_t
// STL
#include <iterator>     // for std::distance
#include <boost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//
namespace boost {
namespace unit_test {
namespace ut_detail {
#ifdef BOOST_NO_STD_DISTANCE
template <class T>
std::ptrdiff_t distance( T const& x_, T const& y_ )
{
    std::ptrdiff_t res = 0;
    std::distance( x_, y_, res );
    return res;
}
//____________________________________________________________________________//
#else
using std::distance;
#endif
template <class T> inline void ignore_unused_variable_warning(const T&) {}
} // namespace ut_detail
} // namespace unit_test
} // namespace boost
//____________________________________________________________________________//
#include <boost/test/detail/enable_warnings.hpp>
#endif // BOOST_TEST_WORKAROUND_HPP_021005GER