[英]shared_ptr - access violation in operator delete
我有一个用Visual C ++编写的应用程序,并且在以下代码段中遇到访问冲突错误:
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
类是从PlayerCharacter
派生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++
(...)
因此,似乎在删除GameObject
对象时发生崩溃,这表明它被删除了两次,但是我完全不知道为什么要删除它,如果-据我了解-共享资源的引用计数不应该降为0,因为在调用createGameObject()
函数时,我进一步传递了所有权:
account->m_characterInGame = std::dynamic_pointer_cast<PlayerCharacter>(GameObjectFactory::createGameObject(characterInfo->m_typeId));
有人知道这里发生了什么吗? 也许我错过了一些显而易见的事情。
编辑:
m_characterInGame
的定义如下: character_ptr m_characterInGame;
和character_ptr
: typedef std::shared_ptr<PlayerCharacter> character_ptr;
遵循David Schwartz和The Badger的建议,我确实重建了该项目,并且成功了。 可能是该文件未使用常规版本重新编译。
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