annotate DEPENDENCIES/generic/include/boost/smart_ptr/detail/sp_forward.hpp @ 125:34e428693f5d vext

Vext -> Repoint
author Chris Cannam
date Thu, 14 Jun 2018 11:15:39 +0100
parents c530137014c0
children
rev   line source
Chris@16 1 #ifndef BOOST_SMART_PTR_DETAIL_SP_FORWARD_HPP_INCLUDED
Chris@16 2 #define BOOST_SMART_PTR_DETAIL_SP_FORWARD_HPP_INCLUDED
Chris@16 3
Chris@16 4 // MS compatible compilers support #pragma once
Chris@16 5
Chris@16 6 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
Chris@16 7 # pragma once
Chris@16 8 #endif
Chris@16 9
Chris@16 10 // detail/sp_forward.hpp
Chris@16 11 //
Chris@16 12 // Copyright 2008,2012 Peter Dimov
Chris@16 13 //
Chris@16 14 // Distributed under the Boost Software License, Version 1.0.
Chris@16 15 // See accompanying file LICENSE_1_0.txt or copy at
Chris@16 16 // http://www.boost.org/LICENSE_1_0.txt
Chris@16 17
Chris@16 18 #include <boost/config.hpp>
Chris@16 19
Chris@16 20 namespace boost
Chris@16 21 {
Chris@16 22
Chris@16 23 namespace detail
Chris@16 24 {
Chris@16 25
Chris@16 26 #if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
Chris@16 27
Chris@101 28 #if defined( BOOST_GCC ) && __GNUC__ * 100 + __GNUC_MINOR__ <= 404
Chris@101 29
Chris@101 30 // GCC 4.4 supports an outdated version of rvalue references and creates a copy of the forwarded object.
Chris@101 31 // This results in warnings 'returning reference to temporary'. Therefore we use a special version similar to std::forward.
Chris@101 32 template< class T > T&& sp_forward( T && t ) BOOST_NOEXCEPT
Chris@101 33 {
Chris@101 34 return t;
Chris@101 35 }
Chris@101 36
Chris@101 37 #else
Chris@101 38
Chris@16 39 template< class T > T&& sp_forward( T & t ) BOOST_NOEXCEPT
Chris@16 40 {
Chris@16 41 return static_cast< T&& >( t );
Chris@16 42 }
Chris@16 43
Chris@16 44 #endif
Chris@16 45
Chris@101 46 #endif
Chris@101 47
Chris@16 48 } // namespace detail
Chris@16 49
Chris@16 50 } // namespace boost
Chris@16 51
Chris@16 52 #endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_FORWARD_HPP_INCLUDED