I've recently introduced a bug in my program that is causing my application to
crash when quitting, but I'm having trouble figuring out what is causing it.
The error reported in the Application Output window is:
HEAP: Free Heap block 15b73e68 modified at 15b73e80 after it was freed
Here's the debugger stack
0 ntdll!TpWaitForAlpcCompletion
C:\windows\system32\ntdll.dll 0x77410575
1 ?? 0x28f5c8
2 ntdll!AlpcMaxAllowedMessageLength
C:\windows\system32\ntdll.dll 0x773ca412
3 ?? 0x15b73e68
4 ntdll!RtlReleasePebLock
C:\windows\system32\ntdll.dll 0x773735b7
5 ?? 0xd
6 ?? 0x8
7 ?? 0x28f690
8 ntdll!LdrLoadAlternateResourceModuleEx
C:\windows\system32\ntdll.dll 0x773734a2
9 ?? 0x15b73ed0
10 ntdll!RtlValidateHeap C:\windows\system32\ntdll.dll
0x7741172e
11 ?? 0x13e50000
12 ntdll!AlpcMaxAllowedMessageLength C:\windows\system32\ntdll.dll
0x773cac29
13 ?? 0x13e50000
14 ntdll!LdrLoadAlternateResourceModuleEx
C:\windows\system32\ntdll.dll 0x773734a2
15 ?? 0x15b73ed0
16 msvcrt!free C:\windows\syswow64\msvcrt.dll
0x75e798cd
17 ?? 0x13e50000
18 QtSharedPointer::ExternalRefCountData::operator delete
qsharedpointer_impl.h 168 0x6b9bed05
19 QObject::~QObject qobject.cpp 796 0x6b9401b4
20 QAction::~QAction qaction.cpp 576 0xa602c45
21 QAction::~QAction qaction.cpp 600 0xa602c73
22 QObjectPrivate::deleteChildren qobject.cpp
1835 0x6b941c3f
23 QWidget::~QWidget qwidget.cpp 1486 0xa62ec02
24 QMainWindow::~QMainWindow qmainwindow.cpp 378
0xa7547fe
25 MainWindow::~MainWindow mainwindow.cpp 249
0x4059d1
26 qMain main.cpp 8 0x40168e
27 WinMain@16 qtmain_win.cpp 131 0x43a2ed
28 main 0x469a4d
I've set a breakpoint in my MainWindow ::~MainWindow(), but I'm able to
successfully step through all of my code without anything crashing. I'm pretty
weak at using debuggers, so I'm unsure what to try next?
As you can see from the stack trace, I'm on Windows. And I'm not sure what
other tools I have at my disposal to help out?
Sean
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