访问访问违规（C系统异常代码：C0000005）访问CCOMPTR指针和应用程序崩溃
在访问计算机时，我会遇到访问违规错误。 该错误是不一致的，并且仅在尝试访问大型数据时可重现。 我有2900个组件，对于每个组件，我都在调用一个函数。在此功能中，我正在访问COMPTER，执行此应用程序时会在200、210、2500等的随机位置崩溃。崩溃时未固定的位置。
此问题特定于系统，并具有以下配置： Window Server 2003 R2 Xeon CPU，2.66 GHz 2 GB RAM
这是我的代码
XGGraphicAttribute* pAttr = pExtraGraphicInfo->GetAttribute();
if(pAttr)
{
DBAttributes* db_attributes = NULL;
db_attributes = static_cast<DBAttributes*> (pAttr->GetDBAttributes());
CComPtr<IEPGraphicData> pIEPGraphicData;
if(db_attributes)
{
pIEPGraphicData = db_attributes->GetGraphicData(); // here my app got crashed
}
}
IEPGraphicData* DBAttributes::GetGraphicData () const
{
return m_pIEPGraphicData;
}
While accessing a computer I get an access violation error.
The error is not consistent and only reproducible while trying to access a huge data.
I have 2900 components and for each component I am calling a function. In this function I am accessing a ccompter, while doing this application gets crashed at random position like on 200, 210, 2500 etc. The position in not fixed when it crashes.
This issue is specific to the system with following configuration:
Window Server 2003 R2
Xeon CPU , 2.66 ghz
2 GB of RAM
here is my code
XGGraphicAttribute* pAttr = pExtraGraphicInfo->GetAttribute();
if(pAttr)
{
DBAttributes* db_attributes = NULL;
db_attributes = static_cast<DBAttributes*> (pAttr->GetDBAttributes());
CComPtr<IEPGraphicData> pIEPGraphicData;
if(db_attributes)
{
pIEPGraphicData = db_attributes->GetGraphicData(); // here my app got crashed
}
}
IEPGraphicData* DBAttributes::GetGraphicData () const
{
return m_pIEPGraphicData;
}
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
可能性：
GetGraphicData() 返回的对象可能不支持 IEPGraphicData 接口。我希望智能指针分配会导致空指针，而不是访问冲突。
db_attributes 对象已从您的脚下删除。
Possibilities:
The object returned by GetGraphicData() might not support the IEPGraphicData interface. I would expect the smart pointer assignment to result in a null pointer though, rather than an access violation.
The db_attributes object has been deleted from underneath your feet.