shared_ptr - 操作员删除中的访问冲突

时间:2015-11-16 11:44:59

标签: c++ c++11 visual-studio-2012 visual-c++ shared-ptr

我有一个用Visual C ++编写的应用程序,我在这个代码片段中遇到了访问冲突错误:

game_object_ptr GameObjectFactory::createGameObject(const int& id) {

    game_object_ptr fullObj;
    if(RANGE_PLAYERS_MIN <= id && RANGE_PLAYERS_MAX >= id) {
        fullObj = game_object_ptr(new PlayerCharacter());
    }

    if(fullObj) {
        return fullObj; // Crashes here...
    }

    return nullptr;
}

game_object_ptr的定义如下:typedef std::shared_ptr<GameObject> game_object_ptr;

PlayerCharacter类派生自GameObject

调用堆栈如下:

msvcr110d.dll!operator delete(void * pUserData) Line 52 C++
MyApp.exe!GameObject::`scalar deleting destructor'(unsigned int)    C++
MyApp.exe!std::_Ref_count<GameObject>::_Destroy() Line 161  C++
MyApp.exe!std::_Ref_count_base::_Decref() Line 120  C++
MyApp.exe!std::_Ptr_base<GameObject>::_Decref() Line 347    C++
MyApp.exe!std::shared_ptr<GameObject>::~shared_ptr<GameObject>() Line 624   C++
MyApp.exe!GameObjectFactory::createGameObject(const int & id) Line 44   C++ 
(...)

所以看起来崩溃发生在删除GameObject对象时,建议它被删除两次,但我不知道它为什么会被删除,如果 - 据我所知 - 参考共享资源的计数不应该降为0,因为我在调用createGameObject()函数时进一步传递所有权:

account->m_characterInGame = std::dynamic_pointer_cast<PlayerCharacter>(GameObjectFactory::createGameObject(characterInfo->m_typeId));

有没有人知道这里发生了什么?也许我错过了一些明显的东西。

编辑:

m_characterInGame的定义如下: character_ptr m_characterInGame;

character_ptrtypedef std::shared_ptr<PlayerCharacter> character_ptr;

1 个答案:

答案 0 :(得分:0)

根据David Schwartz和The Badger的建议,我确实重建了这个项目,这就行了。可能没有使用正常构建重新编译该文件。