1// Boost.TypeErasure library
2//
3// Copyright 2011 Steven Watanabe
4//
5// Distributed under the Boost Software License Version 1.0. (See
6// accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt)
8//
9// $Id$
10
11#ifndef BOOST_TYPE_ERASURE_DETAIL_ANY_BASE_HPP_INCLUDED
12#define BOOST_TYPE_ERASURE_DETAIL_ANY_BASE_HPP_INCLUDED
13
14namespace boost {
15namespace type_erasure {
16
17template<class Derived>
18struct any_base
19{
20 typedef void _boost_type_erasure_is_any;
21 typedef Derived _boost_type_erasure_derived_type;
22 // volatile makes this a worse match than the default constructor
23 // for msvc-14.1, which can get confused otherwise.
24 void* _boost_type_erasure_deduce_constructor(...) const volatile { return 0; }
25 void* _boost_type_erasure_deduce_assign(...) { return 0; }
26};
27
28}
29}
30
31#endif
32

source code of boost/libs/type_erasure/include/boost/type_erasure/detail/any_base.hpp