| /* |
| * 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_ |