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/* * Copyright Andrey Semashev 2007 - 2015. * 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) */ /*! * \file unused_variable.hpp * \author Andrey Semashev * \date 10.05.2008 * * The header contains definition of a macro to suppress compiler warnings about unused variables. */ #ifndef BOOST_LOG_UTILITY_UNUSED_VARIABLE_HPP_INCLUDED_ #define BOOST_LOG_UTILITY_UNUSED_VARIABLE_HPP_INCLUDED_ #include <boost/log/detail/config.hpp> #ifdef BOOST_HAS_PRAGMA_ONCE #pragma once #endif #if defined(__GNUC__) //! The macro suppresses compiler warnings for \c var being unused #define BOOST_LOG_UNUSED_VARIABLE(type, var, initializer) __attribute__((unused)) type var initializer #else namespace boost { BOOST_LOG_OPEN_NAMESPACE namespace aux { template< typename T > BOOST_FORCEINLINE void no_unused_warnings(T const&) BOOST_NOEXCEPT {} } // namespace aux BOOST_LOG_CLOSE_NAMESPACE // namespace log } // namespace boost //! The macro suppresses compiler warnings for \c var being unused #define BOOST_LOG_UNUSED_VARIABLE(type, var, initializer) type var initializer; ::boost::log::aux::no_unused_warnings(var) #endif #endif // BOOST_LOG_UTILITY_UNUSED_VARIABLE_HPP_INCLUDED_