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#include <boost/asio/io_context.hpp>
#include <memory>
int main()
{
    boost::asio::io_context ctx;
    struct op
    {
        std::unique_ptr<int> data;
        void operator()() { }
    };
    ctx.post(op{});
}

/usr/local/include/boost/asio/impl/io_context.hpp:174:3: error: use of deleted function ‘main()::op::op(const main()::op&)’

In file included from /usr/local/include/boost/asio/ip/address.hpp:21:
In file included from /usr/local/include/boost/asio/detail/string_view.hpp:23:
/usr/local/include/c++/v1/experimental/string_view:11:2: error: "<experimental/string_view> has been removed. Use <string_view> instead."
#error "<experimental/string_view> has been removed. Use <string_view> instead."

#include <boost/asio.hpp>
#include <boost/asio/experimental.hpp>
#include <boost/system/error_code.hpp>
#include <utility>

namespace asio = boost::asio;

template <typename Handler>
auto initiating_function(
  asio::io_context& io,
  Handler&& handler
) {
  asio::async_completion<
    Handler, void(boost::system::error_code)
  >
  init(handler);

  co_spawn(
    io,
    [handler = std::move(init.completion_handler)]
    () mutable -> asio::experimental::awaitable<void> {
       co_return handler(boost::system::error_code());
    },
    asio::experimental::detached);

  return init.result.get();
}

auto coro_test(
  asio::io_context& io
) -> asio::experimental::awaitable<void> {

  auto token = co_await asio::experimental::this_coro::token();

  auto ec = boost::system::error_code();

  auto error_token = asio::experimental::redirect_error(token, ec);

  co_await initiating_function(io, error_token);

  co_return;
}

int main() {
  asio::io_context io;

  asio::experimental::co_spawn(
    io,
    [&]() mutable { return coro_test(io); },
    asio::experimental::detached);

  io.run();

  return 0;
}

chris@DESKTOP-752NP2V:~/cpp$ ~/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/bin/clang++ -I/home/chris/boosts/i
nstall-ftw/include -I/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/ -L/home/chris/cl
ang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/lib/ -lc++ -lc++abi -pthread -std=c++17 -nostdinc++ -fcoroutines-ts
 asio-fail.cpp /home/chris/boosts/install-ftw/lib/libboost_system.a

asio-fail.cpp:39:3: warning: expression result unused [-Wunused-value]
  co_await initiating_function(io, error_token);
  ^~~~~~~~
In file included from asio-fail.cpp:2:
In file included from /home/chris/boosts/install-ftw/include/boost/asio/experimental.hpp:18:
In file included from /home/chris/boosts/install-ftw/include/boost/asio/experimental/co_spawn.hpp:224:
/home/chris/boosts/install-ftw/include/boost/asio/experimental/impl/co_spawn.hpp:341:20: error: no matching
      constructor for initialization of 'std::__1::tuple<>'
    new (&result_) T(std::forward<U>(u));
                   ^ ~~~~~~~~~~~~~~~~~~
/home/chris/boosts/install-ftw/include/boost/asio/experimental/impl/co_spawn.hpp:606:21: note: in instantiation of
      function template specialization 'boost::asio::experimental::detail::awaitee<std::__1::tuple<>,
      boost::asio::strand<boost::asio::executor> >::return_value<std::__1::tuple<boost::system::error_code &&> >'
      requested here
    this->awaitee_->return_value(
                    ^
/home/chris/boosts/install-ftw/include/boost/asio/experimental/impl/redirect_error.hpp:53:5: note: in instantiation of
      function template specialization
      'boost::asio::experimental::detail::await_handler<boost::asio::strand<boost::asio::executor>>::operator()<boost:
:system::error_code>'
      requested here
    handler_(BOOST_ASIO_MOVE_CAST(Args)(args)...);
    ^
asio-fail.cpp:22:18: note: in instantiation of function template specialization
      'boost::asio::experimental::detail::redirect_error_handler<boost::asio::experimental::detail::await_handler<boos
t::asio::strand<boost::asio::executor>>
      >::operator()<boost::system::error_code>' requested here
       co_return handler(boost::system::error_code());
                 ^
/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/tuple:911:28: note: candidate
      constructor (the implicit copy constructor) not viable: no known conversion from
      'tuple<boost::system::error_code &&>' to 'const tuple<(no argument)>' for 1st argument
class _LIBCPP_TEMPLATE_VIS tuple<>
                           ^
/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/tuple:911:28: note: candidate
      constructor (the implicit move constructor) not viable: no known conversion from
      'tuple<boost::system::error_code &&>' to 'tuple<(no argument)>' for 1st argument
/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/tuple:924:9: note: candidate template
      ignored: could not match 'array' against 'tuple'
        tuple(array<_Up, 0>) _NOEXCEPT {}
        ^
/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/tuple:918:9: note: candidate
      constructor template not viable: requires 2 arguments, but 1 was provided
        tuple(allocator_arg_t, const _Alloc&) _NOEXCEPT {}
        ^
/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/tuple:921:9: note: candidate
      constructor template not viable: requires 3 arguments, but 1 was provided
        tuple(allocator_arg_t, const _Alloc&, const tuple&) _NOEXCEPT {}
        ^
/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/tuple:927:9: note: candidate
      constructor template not viable: requires 3 arguments, but 1 was provided
        tuple(allocator_arg_t, const _Alloc&, array<_Up, 0>) _NOEXCEPT {}
        ^
/home/chris/clang/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/include/c++/v1/tuple:915:23: note: candidate
      constructor not viable: requires 0 arguments, but 1 was provided
    _LIBCPP_CONSTEXPR tuple() _NOEXCEPT {}
                      ^
1 warning and 1 error generated.

class MulticastSocket 
{
public:
	MulticastSocket();
	virtual ~MulticastSocket();
	virtual void open(int port_num, const char* network_type="ipv4", const char* ip_address="", uint32_t listen_interface=0);
	virtual void send(u8* message, u32 size);
	virtual void close();
	virtual bool isOpen();
	//virtual void onReceived(u8*, u32);

private:
	void write();
	void strand_push(std::string str);

	void startReceive();
	void handleReceive(const boost::system::error_code&, std::size_t);
	void handleSend(const boost::system::error_code& error, std::size_t bytes_transferred);

private:
	boost::asio::io_service send_ios_;
	boost::asio::io_service::strand strand_;
	std::unique_ptr<boost::asio::io_service::work> send_worker_;
	
	boost::asio::io_service receive_ios_;
	std::unique_ptr<boost::asio::io_service::work> receive_worker_;

	boost::thread send_thread_;
	boost::thread receive_thread_;
	boost::array<char, 1024> buffer_;
	boost::asio::ip::udp::endpoint mcast_endpoint_;
	boost::asio::ip::udp::endpoint sender_endpoint_;
	boost::asio::ip::udp::endpoint listen_endpoint_;

	std::unique_ptr<boost::asio::ip::udp::socket> send_udp_socket_;
	std::unique_ptr<boost::asio::ip::udp::socket> receive_udp_socket_;
	std::deque<std::string>  write_queue_;
};


MulticastSocket::MulticastSocket()
	: send_ios_()
	, strand_(send_ios_)
{
}
MulticastSocket::~MulticastSocket()
{
}

/***************************************************************************//**
\brief			
\details		
\note			
\param[in]		
*******************************************************************************/
void MulticastSocket::open(int port_num, const char* network_type, const char* multicastAddress, uint32_t listen_interface)
{
	if (listen_interface == 0) {
		return;
	}
	
	try
	{
		struct in_addr in;
		in.S_un.S_addr = listen_interface;
		char* address_listen = inet_ntoa(in);
		std::string address_mcast = multicastAddress;
		unsigned short address_port = port_num;

		boost::system::error_code ec;

		boost::asio::ip::address listen_addr = boost::asio::ip::address::from_string(address_listen, ec);
		boost::asio::ip::address mcast_addr = boost::asio::ip::address::from_string(address_mcast, ec);

		
		if (strcmp(network_type, "ipv4") == 0)
		{
			listen_endpoint_ = udp::endpoint(listen_addr, port_num);
			mcast_endpoint_ =  udp::endpoint(mcast_addr, port_num);
		}
		else if (strcmp(network_type, "ipv6") == 0)
		{
			listen_endpoint_ = udp::endpoint(listen_addr, port_num);
			mcast_endpoint_ = udp::endpoint(mcast_addr, port_num);
		}
		else
			return;

		send_udp_socket_.reset(new boost::asio::ip::udp::socket(send_ios_));
		receive_udp_socket_.reset(new boost::asio::ip::udp::socket(receive_ios_));

		send_udp_socket_->open(boost::asio::ip::udp::v4());
		receive_udp_socket_->open(listen_endpoint_.protocol());
		send_udp_socket_->set_option(boost::asio::ip::udp::socket::reuse_address(true));
		receive_udp_socket_->set_option(boost::asio::ip::udp::socket::reuse_address(true));
		
		boost::asio::ip::address_v4 local_interface =
			boost::asio::ip::address_v4::from_string(address_listen);
		boost::asio::ip::multicast::outbound_interface option(local_interface);
		
		receive_udp_socket_->bind(listen_endpoint_);
		
		// Join the multicast group.
		receive_udp_socket_->set_option(boost::asio::ip::multicast::join_group(mcast_addr.to_v4(), listen_addr.to_v4()), ec);
		
		send_udp_socket_->set_option(option);
		receive_udp_socket_->set_option(option);

		send_udp_socket_->set_option(asio::ip::multicast::enable_loopback(false));

		//boost::asio::ip::multicast::hops hops_option(3);
		//send_udp_socket_->set_option(hops_option);
		//receive_udp_socket_->set_option(hops_option);

		receive_worker_.reset(new boost::asio::io_service::work(receive_ios_));
		send_worker_.reset(new boost::asio::io_service::work(send_ios_));

		startReceive();

		receive_thread_ = boost::thread(boost::bind(&boost::asio::io_service::run, &receive_ios_));
		send_thread_ = boost::thread(boost::bind(&boost::asio::io_service::run, &send_ios_));


		return;
	}
	catch (std::exception& exp)
	{
		exp;
		return;
	}
}

/***************************************************************************//**
\brief			
\details		
*******************************************************************************/
ARLErrorCode_e MulticastSocket::close(void)
{
	try {
		boost::system::error_code ec;
		if (send_udp_socket_) {
			//send_udp_socket_->cancel();
			send_udp_socket_->shutdown(socket_base::shutdown_both, ec);
		}
		if (receive_udp_socket_) {
			//receive_udp_socket_->cancel();
			receive_udp_socket_->shutdown(socket_base::shutdown_both, ec);
		}
		if (ec) 
		{
			return;
		}
		if (send_udp_socket_ && send_udp_socket_->is_open())
		{
			send_udp_socket_->close();
		}
		if (receive_udp_socket_ && receive_udp_socket_->is_open())
		{
			receive_udp_socket_->close();
		}

		receive_worker_.reset();
		send_worker_.reset();

		receive_udp_socket_.reset();
		send_udp_socket_.reset();

		if (send_thread_.joinable()) {
			send_thread_.join();
		}
		if (receive_thread_.joinable()) {
			receive_thread_.join();
		}

	}
	catch (std::exception& e)
	{
		e;
		return;
	}
	
}
/***************************************************************************//**
\brief			
\details		
*******************************************************************************/
bool MulticastSocket::isOpen()
{
	bool sender = send_udp_socket_ && send_udp_socket_->is_open();
	bool receive = receive_udp_socket_ && receive_udp_socket_->is_open();
	return sender && receive;
}

/***************************************************************************//**
\brief		Send a message.		
\details	The message is sent asynchronously.	
\param		message
\param		message size
*******************************************************************************/
void MulticastSocket::send(u8* message, u32 size)
{
	if (!isOpen()) {
		return;
	}

	strand_.post(boost::bind(&MulticastSocket::strand_push, this, std::string((char*)message, size)));
	
	return;
}
/***************************************************************************//**
\brief			
\details		
*******************************************************************************/
void MulticastSocket::strand_push(std::string str)
{
	write_queue_.push_front(str);
	write();
}
/***************************************************************************//**
\brief			
\details		
*******************************************************************************/
void MulticastSocket::write()
{
	std::string buffer = write_queue_.front();
	write_queue_.pop_front();

	std::string send_to_address = mcast_endpoint_.address().to_string();

	if (send_udp_socket_) {
		send_udp_socket_->async_send_to(
			boost::asio::buffer(buffer.c_str(), buffer.size()),
			mcast_endpoint_,
			bind(
				&MulticastSocket::handleSend,
				this,
				asio::placeholders::error,
				asio::placeholders::bytes_transferred));
	}
}

void MulticastSocket::handleSend(const system::error_code& error, size_t)
{
	if (error) 
	{
	}
}
/***************************************************************************//**
\brief	Start an asynchronous receiver.			
*******************************************************************************/
void NetLib::MulticastSocket::startReceive()
{
	if (receive_udp_socket_) {
		receive_udp_socket_->async_receive_from(
			boost::asio::buffer(buffer_),
			sender_endpoint_,
			bind(
				&MulticastSocket::handleReceive,
				this,
				asio::placeholders::error,
				asio::placeholders::bytes_transferred));

		std::string sender_address = sender_endpoint_.address().to_string();
	}
}

void NetLib::MulticastSocket::handleReceive(const system::error_code& error, size_t size)
{
	if (!error || error == error::message_size)
	{
		startReceive();
	}
	else 		
	{
	}
}

std::string s;
try
{
    dynamic_buffer(s).prepare(50);
    throw std::exception("oops");
}
catch(std::exception const&)
{
    assert(s.empty()); // fails
}

void f(socket& sock, DynamicBuffer&& b_, error_code& ec)
{
  typename std::decay<DynamicBuffer>::type b{b_};
  auto const bytes_transferred = sock.read_some(b.prepare(50), ec);
  if(ec)
  {
    // at this point, if b_ is a dynamic_string_buffer, the underlying string will
    // have 50 surplus default-initialized characters
    return;
   }
  ...

#include <boost/asio/system_context.hpp>

int main() {
    return 0;
}

Generating Output File: /home/ubuntu/build/boost/bin.v2/libs/asio/doc/gcc-gnu-4.8/debug/threadapi-pthread/asio_doc.xml
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:32: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:32: warning: line breaks generate invalid boostbook (will only note first occurrence).
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:33: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:36: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:37: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:41: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:42: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:43: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:44: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:45: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:46: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:47: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessReadDevice.qbk:48: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:32: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:33: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:37: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:38: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:42: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:43: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:44: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:45: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:46: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:47: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:48: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncRandomAccessWriteDevice.qbk:49: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncReadStream.qbk:34: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncReadStream.qbk:35: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncReadStream.qbk:42: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncReadStream.qbk:43: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncWriteStream.qbk:34: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncWriteStream.qbk:35: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncWriteStream.qbk:40: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/requirements/AsyncWriteStream.qbk:41: warning: '\n' is deprecated, pleases use '[br]' instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:20: error: Unable to find file: requirements/ComposedConnectHandler.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:23: error: Unable to find file: requirements/ConvertibleToConstBuffer.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:24: error: Unable to find file: requirements/ConvertibleToMutableBuffer.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:25: error: Unable to find file: requirements/DatagramSocketService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:26: error: Unable to find file: requirements/DescriptorService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:31: error: Unable to find file: requirements/HandleService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:37: error: Unable to find file: requirements/ObjectHandleService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:39: error: Unable to find file: requirements/RandomAccessHandleService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:40: error: Unable to find file: requirements/RawSocketService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:43: error: Unable to find file: requirements/ResolverService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:44: error: Unable to find file: requirements/SeqPacketSocketService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:45: error: Unable to find file: requirements/SerialPortService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:51: error: Unable to find file: requirements/SignalSetService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:52: error: Unable to find file: requirements/SocketAcceptorService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:53: error: Unable to find file: requirements/SocketService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:54: error: Unable to find file: requirements/StreamDescriptorService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:55: error: Unable to find file: requirements/StreamHandleService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:56: error: Unable to find file: requirements/StreamSocketService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:62: error: Unable to find file: requirements/TimerService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:63: error: Unable to find file: requirements/WaitableTimerService.qbk
/home/ubuntu/boost/libs/asio/doc/reference.qbk:72: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:126: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:182: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:211: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:307: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:350: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:862: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:1231: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:1610: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:2173: error: Invalid number of arguments passed. Expecting: 3 argument(s), got: 2 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:2190: error: Invalid number of arguments passed. Expecting: 3 argument(s), got: 2 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:2204: error: Invalid number of arguments passed. Expecting: 3 argument(s), got: 2 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:2227: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:2568: error: Invalid number of arguments passed. Expecting: 2 argument(s), got: 1 argument(s) instead.
/home/ubuntu/boost/libs/asio/doc/reference.qbk:3362: error: Invalid number of arguments passed. Expecting: 3 argument(s), got: 2 argument(s) instead.

13>         Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately. For example:
13>         - add -D_WIN32_WINNT=0x0501 to the compiler command line; or
13>         - add _WIN32_WINNT=0x0501 to your project's Preprocessor Definitions.
13>         Assuming _WIN32_WINNT=0x0501 (i.e. Windows XP target).
13>         Generating Code...

     while (next != end && max_size > 0 && result.count < result.max_buffers)
                                                  ^

--- a/boost/asio/detail/consuming_buffers.hpp
+++ b/boost/asio/detail/consuming_buffers.hpp
@@ -102,7 +102,7 @@ public:

     std::advance(next, next_elem_);
     std::size_t elem_offset = next_elem_offset_;
-    while (next != end && max_size > 0 && result.count < result.max_buffers)
+    while (next != end && max_size > 0 && (result.count) < result.max_buffers)
     {
       Buffer next_buf = Buffer(*next) + elem_offset;
       result.elems[result.count] = boost::asio::buffer(next_buf, max_size);