[英]shared_ptr - access violation in operator delete
我有一個用Visual C ++編寫的應用程序,並且在以下代碼段中遇到訪問沖突錯誤:
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
的定義如下: typedef std::shared_ptr<GameObject> game_object_ptr;
PlayerCharacter
類是從PlayerCharacter
派生GameObject
。
調用堆棧如下:
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,似乎在刪除GameObject
對象時發生崩潰,這表明它被刪除了兩次,但是我完全不知道為什么要刪除它,如果-據我了解-共享資源的引用計數不應該降為0,因為在調用createGameObject()
函數時,我進一步傳遞了所有權:
account->m_characterInGame = std::dynamic_pointer_cast<PlayerCharacter>(GameObjectFactory::createGameObject(characterInfo->m_typeId));
有人知道這里發生了什么嗎? 也許我錯過了一些顯而易見的事情。
編輯:
m_characterInGame
的定義如下: character_ptr m_characterInGame;
和character_ptr
: typedef std::shared_ptr<PlayerCharacter> character_ptr;
遵循David Schwartz和The Badger的建議,我確實重建了該項目,並且成功了。 可能是該文件未使用常規版本重新編譯。
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