Game crash when i run this code under android

cocos2d-x C++
#1

I wrote some code like this

class TestObject: public CCObject
{
    //some code
}

class Thread:public CCObject
{
public :
    ~Thread()
    {
        if(obj)
        {
            obj->release();
        }
    }
    void start(){/*some code to start the thread*/}
    void run()
    {
        doSomeJob();
                obj = new TestObject();
        m_exit = true;
    }
    bool m_exit;
    TestObject* obj;
}


//schedule func

void TestScene::update_test(ccTime t)
{
    if(!m_thread)
    {
        m_thread = new Thread();
        m_thread->start();
    }
    if(m_thread&&m_thread->m_exit)
    {
        m_thread->release();
        //director to other scene
    }
}

it crash when i build and run it under the android.

this code do some job like that:

I start a new thread use pthread and in this new thread I use it to login the game server and load the user data from the server, on the load scene schedule function i test if this job is done if done read this data and release the thread.
Can some one figure out the problem why the game crash. Thanks.

#2

Many codes in engine use autorelease() to let autorelease pool manage the life cycle of the object.
Autorelease pool now is not thread-safe. So maybe you operate the object that allocated from engine
in the new thread is released. Then it may crashed.

I don’t know if it is the real reason, just a guess.