| |
| // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard |
| // Hinnant & John Maddock 2000. |
| // Use, modification and distribution are subject to 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/type_traits for most recent version including documentation. |
| |
| #ifndef BOOST_TT_ADD_VOLATILE_HPP_INCLUDED |
| #define BOOST_TT_ADD_VOLATILE_HPP_INCLUDED |
| |
| #include <boost/config.hpp> |
| |
| namespace boost { |
| |
| // * convert a type T to volatile type - add_volatile<T> |
| // this is not required since the result is always |
| // the same as "T volatile", but it does suppress warnings |
| // from some compilers: |
| |
| #if defined(BOOST_MSVC) |
| // This bogus warning will appear when add_volatile is applied to a |
| // const volatile reference because we can't detect const volatile |
| // references with MSVC6. |
| # pragma warning(push) |
| # pragma warning(disable:4181) // warning C4181: qualifier applied to reference type ignored |
| #endif |
| |
| template <class T> struct add_volatile{ typedef T volatile type; }; |
| |
| #if defined(BOOST_MSVC) |
| # pragma warning(pop) |
| #endif |
| |
| template <class T> struct add_volatile<T&>{ typedef T& type; }; |
| |
| #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) |
| |
| template <class T> using add_volatile_t = typename add_volatile<T>::type; |
| |
| #endif |
| |
| } // namespace boost |
| |
| #endif // BOOST_TT_ADD_VOLATILE_HPP_INCLUDED |
