在 0x00007FF746DA221B SDL_game.exe 处抛出异常：0xC0000005：访问冲突读取位置 0xFFFFFFFFFFFFFFFF

Question

我正在尝试调试我的应用程序，但我经常收到此错误，而且我不知道如何修复它。调试的时候发现错误的地方是函数parseObjects。它还从游戏对象工厂调用创建函数，如下所示...

GameObject* GameObjectFactory::create(std::string typeID) { std::map<std::string, BaseCreator*>::iterator it = m_creators.find(typeID);

if (it == m_creators.end()) 
{
    std::cout << "could not find type: " << typeID << "\n";
    return 0;
}

BaseCreator* pCreator = (*it).second;
return pCreator->createGameObject();}

此后它调用 Creator 对象加载函数成功加载参数，但是当它尝试将对象推回向量时它收到上述错误。

在 0x00007FF746DA221B 处抛出异常 SDL_game.exe：0xC0000005：访问冲突读取位置 0xFFFFFFFFFFFFFFFF。

    ...
    e->Attribute("x", &x);
    e->Attribute("y", &y);
    e->Attribute("width", &width);
    e->Attribute("height", &height);
    e->Attribute("numFrames", &numFrames);
    e->Attribute("callbackID", &callbackID);
    e->Attribute("animSpeed", &animSpeed);

    type = e->Attribute("type");
    textureID = e->Attribute("textureID");

    GameObject* pGameObject = TheGameObjectFactory::Instance()->create(type);
    pGameObject->load(new LoaderParams(x, y, width, height, textureID, numFrames, callbackID, animSpeed)); 
    pObjects->push_back(pGameObject); // fails on this line ???
}`

调试器在向量中转到这一行... bool _Inside(const value_type *_Ptr) const { // test if _Ptr points inside vector return (_Ptr < this->_Mylast() && this->_Myfirst() <= _Ptr); }

任何帮助和建议将不胜感激...

Answer 1

我认为这可能是因为您的向量 pObjects 未初始化或处于某种损坏状态。

在 0x00007FF746DA221B SDL_game.exe 处抛出异常：0xC0000005：访问冲突读取位置 0xFFFFFFFFFFFFFFFF

Exception thrown at 0x00007FF746DA221B SDL_game.exe: 0xC0000005: Access violation reading location 0xFFFFFFFFFFFFFFFF

c++

vector

tinyxml

c++11