在void函数中收到未知类型

如何解决在void函数中收到未知类型

我收到参数pr，并且在打印时其类型为St10shared_ptrIKN4mqtt7messageEE。你知道是哪种类型吗？我想收到一个mqtt类型的参数。

cpp

#define RAPIDJSON_HAS_STDSTRING 1
#include <boost/units/cmath.hpp>
#include <boost/units/systems/si/prefixes.hpp>
#include <chrono>
#include <exception>
#include <functional>
#include <iostream>
#include <INTEGER.h>
#include <fstream>
#include <string>

#include <rapidjson/document.h>
#include <rapidjson/writer.h>
#include <rapidjson/stringbuffer.h>
#include <rapidjson/istreamwrapper.h>
#include <rapidjson/ostreamwrapper.h>


using namespace rapidjson;
Document doc; 


void MqttApplication::mqttReceive()

{

try {
    cout << "\subscribing to topics..." << endl;
    mqttClient->start_consuming();
    mqttClient->subscribe(TOPIC,QOS)->wait();
    cout << "...OK" << endl;
}
catch (const mqtt::exception& exc) {
    cerr << exc.what() << endl;
    return;
}

while (true) {
    auto msg = mqttClient->consume_message();
    if (!msg) {
        if (!mqttClient->is_connected()) {
            cout << "lost connection" << endl;
            if (mqttTryReconnect(*mqttClient)) {
                mqttClient->subscribe(TOPIC,QOS);
                cout << "application reconnected" << endl;
                continue;
            }
            else {
                cout << "application reconnect failed." << endl;
            }
        }
        else {
            cout << "error occurred." << endl;
        }
        break;
    }

    try {
        send(mqttClient->consume_message());
    }
    catch (const mqtt::exception& exc) {
        cerr << exc.what() << endl;
        return;
    }

    if (msg->get_topic() == "command" && msg->to_string() == "exit") {
        cout << "Exit command received" << endl;
        break;
    }

    cout << msg->get_topic() << ": " << msg->to_string() << endl;
}
}

void MqttApplication::send(const mqtt::const_message_ptr& pr)
{

if (pr)
{
    cout <<  typeid(pr).name()  << endl;
}

}

hpp

void send(const mqtt::const_message_ptr& pr);

我得到这张照片：

 socktap-mqtt: /usr/include/rapidjson/document.h:1154: rapidjson::GenericValue<Encoding,Allocator>::MemberIterator rapidjson::GenericValue<Encoding,Allocator>::FindMember(const rapidjson::GenericValue<Encoding,SourceAllocator>&) [with SourceAllocator = rapidjson::MemoryPoolAllocator<>; Encoding = rapidjson::UTF8<>; Allocator = rapidjson::MemoryPoolAllocator<>; rapidjson::GenericValue<Encoding,Allocator>::MemberIterator = rapidjson::GenericMemberIterator<false,rapidjson::UTF8<>,rapidjson::MemoryPoolAllocator<> >]: Assertion `IsObject()' failed.
Aborted

谢谢