can't use boost::bind as completion token

[diggit]

Hi,
I am trying to pass std::bind as completion token to async bulk read.
My inspiration is this boost example.
As I am total asio noob, I am quite lost. Do you know what could be the issue?

class Pump : public boost::enable_shared_from_this<Pump> {
public:
	std::array<std::byte, 512> buffer {};

	void start() {
		boost::asio::async_read(
			source,
			boost::asio::buffer(buffer),
			boost::bind(
				&Pump::handle_read, shared_from_this(),
				boost::asio::placeholders::error,
				boost::asio::placeholders::bytes_transferred
			)
		);
	}

  private:
	Pump(std::deque<std::byte> &sink, usb_asio::usb_in_bulk_transfer &source, const unsigned int id) :
		sink(sink),
		source(source),
		id(id)
		{}

	void handle_read(boost::system::error_code error_code, std::size_t bytes_read) {
		assert(error_code);
		if (bytes_read) {
			sink.insert(sink.end(), buffer.begin(), buffer.begin()+bytes_read);
		}
		start();
	}

	std::deque<std::byte> &sink;
	usb_asio::usb_in_bulk_transfer &source;
	unsigned int id {};
};
[error.txt](https://github.com/MiSo1289/usb-asio/files/10483346/error.txt)

[diggit]

removing forward from here

usb-asio/include/usb_asio/usb_transfer.hpp

Line 580 in eb10616

std::forward<CompletionToken>(token),

solves the issue. Though, I am not sure it that's the right way.

[MiSo1289]

removing forward from here

usb-asio/include/usb_asio/usb_transfer.hpp

Line 580 in eb10616

std::forward<CompletionToken>(token),

solves the issue. Though, I am not sure it that's the right way.

You are correct, the forward should not be there