Chris@16: /*
Chris@101:  *          Copyright Andrey Semashev 2007 - 2015.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  *    (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  *          http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  */
Chris@16: /*!
Chris@16:  * \file   unused_variable.hpp
Chris@16:  * \author Andrey Semashev
Chris@16:  * \date   10.05.2008
Chris@16:  *
Chris@16:  * The header contains definition of a macro to suppress compiler warnings about unused variables.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_LOG_UTILITY_UNUSED_VARIABLE_HPP_INCLUDED_
Chris@16: #define BOOST_LOG_UTILITY_UNUSED_VARIABLE_HPP_INCLUDED_
Chris@16: 
Chris@16: #include <boost/log/detail/config.hpp>
Chris@16: 
Chris@16: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #if defined(__GNUC__)
Chris@16: 
Chris@16: //! The macro suppresses compiler warnings for \c var being unused
Chris@16: #define BOOST_LOG_UNUSED_VARIABLE(type, var, initializer) __attribute__((unused)) type var initializer
Chris@16: 
Chris@16: #else
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: BOOST_LOG_OPEN_NAMESPACE
Chris@16: 
Chris@16: namespace aux {
Chris@16: 
Chris@16: template< typename T >
Chris@101: BOOST_FORCEINLINE void no_unused_warnings(T const&) BOOST_NOEXCEPT {}
Chris@16: 
Chris@16: } // namespace aux
Chris@16: 
Chris@16: BOOST_LOG_CLOSE_NAMESPACE // namespace log
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: //! The macro suppresses compiler warnings for \c var being unused
Chris@16: #define BOOST_LOG_UNUSED_VARIABLE(type, var, initializer) type var initializer; ::boost::log::aux::no_unused_warnings(var)
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: #endif // BOOST_LOG_UTILITY_UNUSED_VARIABLE_HPP_INCLUDED_