text: 
  #ifndef BOOST_MPL_VOID_FWD_HPP_INCLUDED
  #define BOOST_MPL_VOID_FWD_HPP_INCLUDED
  
  // Copyright Aleksey Gurtovoy 2001-2004
  //
  // 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)
  //
  // See http://www.boost.org/libs/mpl for documentation.
  
  // $Source$
  // $Date: 2004-09-02 11:41:37 -0400 (Thu, 02 Sep 2004) $
  // $Revision: 24874 $
  
  #include <boost/mpl/aux_/adl_barrier.hpp>
  
  BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
  
  struct void_;
  
  BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
  BOOST_MPL_AUX_ADL_BARRIER_DECL(void_)
  
  #endif // BOOST_MPL_VOID_FWD_HPP_INCLUDED
  