text: //===----------------------------------------------------------------------===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is dual licensed under the MIT and the University of Illinois Open
  // Source Licenses. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  
  // Copyright (C) 2014 Vicente J. Botet Escriba
  //
  //  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)
  
  // <boost/thread/future.hpp>
  
  // future<tuple<>> when_all();
  
  #include <boost/config.hpp>
  
  #if ! defined  BOOST_NO_CXX11_DECLTYPE
  #define BOOST_RESULT_OF_USE_DECLTYPE
  #endif
  
  
  #define BOOST_THREAD_VERSION 4
  
  #include <boost/thread/future.hpp>
  #include <boost/detail/lightweight_test.hpp>
  
  int main()
  {
  #if defined BOOST_THREAD_PROVIDES_FUTURE_WHEN_ALL_WHEN_ANY
  
    {
      boost::future<boost::csbl::tuple<> > all = boost::when_all();
      BOOST_TEST(all.valid());
      BOOST_TEST(all.is_ready());
    }
  #endif
  
    return boost::report_errors();
  }
  