Intermittent crash in frame hook

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hi, 
We keep having some intermittent crashes reported by customers that we cannot reproduce in dev. The call stack of a typical crash is shown below.

I wonder if someone has any idea what is going on? Or how we can start looking into this? We are using the framework normally as far as I know

Thank you!

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
ericgen34 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 16 July 2019 Location: Salisbury Status: Offline Points: 6	Post Options Post Reply Quote ericgen34 Report Post Thanks(0) Quote Reply Topic: Intermittent crash in frame hook Posted: 22 September 2020 at 5:03am
	Hi, We keep having some intermittent crashes reported by customers that we cannot reproduce in dev. The call stack of a typical crash is shown below. I wonder if someone has any idea what is going on? Or how we can start looking into this? We are using the framework normally as far as I know Thank you!

ericgen34 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 16 July 2019 Location: Salisbury Status: Offline Points: 6	Post Options Post Reply Quote ericgen34 Report Post Thanks(0) Quote Reply Posted: 22 September 2020 at 5:05am
	Apologies, the call stack screen shot didnt show. Here it is copied: KERNELBASE.dll!_RaiseException@16() Unknown VCRUNTIME140.dll!_CxxThrowException(void * pExceptionObject, const _s__ThrowInfo * pThrowInfo) Line 129 C++ mfc140u.dll!AfxThrowResourceException() Line 1347 C++ > mfc140u.dll!CWindowDC::CWindowDC(CWnd * pWnd) Line 1018 C++ ToolkitPro1900vc150U.dll!CXTPCommandBarsFrameHook::RedrawFrame() Line 627 C++ ToolkitPro1900vc150U.dll!CXTPCommandBarsFrameHook::OnHookMessage(HWND__ * hWnd, unsigned int nMessage, unsigned int & wParam, long & lParam, long & lResult) Line 1025 C++ ToolkitPro1900vc150U.dll!CXTPHookManager::CHookSink::OnHookMessage(HWND__ * hWnd, unsigned int nMessage, unsigned int & wParam, long & lParam, long & lResult) Line 319 C++ ToolkitPro1900vc150U.dll!CXTPHookManager::HookWndProc(HWND__ * hWnd, unsigned int message, unsigned int wParam, long lParam) Line 440 C++ user32.dll!__InternalCallWinProc@20() Unknown user32.dll!UserCallWinProcCheckWow() Unknown user32.dll!DispatchClientMessage() Unknown user32.dll!___fnDWORD@4() Unknown ntdll.dll!_KiUserCallbackDispatcher@12() Unknown user32.dll!RealDefWindowProcWorker() Unknown user32.dll!RealDefWindowProcW() Unknown uxtheme.dll!_ThemeDefWindowProc() Unknown uxtheme.dll!_ThemeDefWindowProcW@16() Unknown user32.dll!DefWindowProcW() Unknown user32.dll!DefWindowProcWorker() Unknown user32.dll!DefDlgProcWorker() Unknown user32.dll!_DefDlgProcW@16() Unknown user32.dll!UserCallWinProcCheckWow() Unknown

agontarenko Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 25 March 2016 Status: Offline Points: 260	Post Options Post Reply Quote agontarenko Report Post Thanks(0) Quote Reply Posted: 25 September 2020 at 2:30am
	Hello, Unfortunately it is not clear what exactly is going wrong. Can you please provide more detailed information. If it cannot be re-produced in any of our sample applications provided I would appreciate you sending a sample application so that we could debug it. Regards, Artem Gontarenko

ericgen34 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 16 July 2019 Location: Salisbury Status: Offline Points: 6	Post Options Post Reply Quote ericgen34 Report Post Thanks(0) Quote Reply Posted: 25 September 2020 at 3:31am
	Well, we cant reproduce it either, and the application is rather big, I cant really send a sample I'm afraid. I just wondered if there are specific areas to look into

rdhd Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2007 Location: United States Status: Offline Points: 867	Post Options Post Reply Quote rdhd Report Post Thanks(0) Quote Reply Posted: 02 October 2020 at 5:47pm
	It would appear the input window to the constructor is not a valid window during the entire call to the constructor. Are you threading? MFC isn't thread safe. A lot can go on while this code executes: ASSERT(pWnd == NULL \|\| ::IsWindow(pWnd->m_hWnd)); if (!Attach(::GetWindowDC(m_hWnd = pWnd->GetSafeHwnd()))) The first line is only executed for debug builds. If you want to validate a window during release builds, you have to make the IsWindow call before calling the constructor. If a thread takes over while doing "m_hWnd = ...) no the m_hWnd could be bad before the call to Attach is made.