Re: [I] when i use [rocketmq-client-cpp-2.2.0] api in my app, it's often Crashed with Error: pure virtual method called [rocketmq-client-cpp]

[via GitHub]

HUHANK commented on issue #465:
URL: 
https://github.com/apache/rocketmq-client-cpp/issues/465#issuecomment-2019677079

   > 掉用`registerMessageListener`函数的代码
   
   ```
   try
       {
           m_consumer_handler = new 
DefaultMQPushConsumer(m_consumer_group_name);
           m_consumer_handler->setNamesrvAddr(m_namesrv_addr);
           m_consumer_handler->setGroupName(m_consumer_group_name);
           m_consumer_handler->setConsumeFromWhere(CONSUME_FROM_LAST_OFFSET);
           m_consumer_handler->subscribe(m_consumer_topic, "*");
           m_consumer_handler->setConsumeThreadCount(1);
           m_consumer_handler->setConsumeMessageBatchMaxSize(31);
           m_consumer_handler->setAsyncPull(true);
           m_consumer_msg_listener = new ConsumerMsgListener(this);
           m_consumer_handler->registerMessageListener(m_consumer_msg_listener);
           m_consumer_handler->start();
       }
       catch (const MQClientException &e)
       {
           LOG_ERROR(e.what());
           return false;
       }
   ```


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