我尝试使用Boost：：ASIO中的通道实现协同程序取消，但是我遇到了分段错误，我无法找出原因。我尝试使用调试器，但它没有告诉我太多，只是说分段错误发生在“io_ctx-〉run（）"之后。
下面是我的代码：

boost::asio::awaitable<void> to_be_cancelled(
    boost::asio::experimental::concurrent_channel<void(boost::system::error_code, std::string)>& end,
    shared_ptr<boost::asio::io_context> io_ctx)
{
    boost::asio::ip::tcp::socket sock(*io_ctx);
    boost::asio::ip::tcp::endpoint endpoint(boost::asio::ip::tcp::v4(), 8000);
    boost::asio::ip::tcp::acceptor acceptor(*io_ctx, endpoint);
    co_await
    (
        end.async_receive(boost::asio::use_awaitable_t()) ||
        acceptor.async_accept(sock, boost::asio::use_awaitable_t())
    );

    cout << "done\n";
}

boost::asio::awaitable<void> send_one_message(
    boost::asio::experimental::concurrent_channel<void(boost::system::error_code, std::string)>& channel)
{
    channel.async_send(boost::system::error_code{}, string("hello"), boost::asio::use_awaitable_t());
}

boost::asio::awaitable<void> coroutine_manager(shared_ptr<boost::asio::io_service> io_ctx)
{
    auto ch = make_shared<boost::asio::experimental::concurrent_channel<void(boost::system::error_code, std::string)>>(*io_ctx, 5);
    co_await (to_be_cancelled(*ch, io_ctx) && send_one_message(*ch));
}

int main()
{
    auto io_ctx = std::make_shared<boost::asio::io_service>(2);
    co_spawn(*io_ctx, coroutine_manager(io_ctx), boost::asio::detached);
    io_ctx->run();
}

任何帮助都将不胜感激。