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Details

Type: Bug
Resolution: Duplicate
Priority: Not Evaluated
Fix Version/s: None
Affects Version/s: 5.12.2
Component/s: Core: Containers and Algorithms
Labels:
None
Environment:

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Qt v5.12.2 is compiled from source and statically linked to our C++ application built using Visual Studio 2017 (v15.8.6) and Windows SDK version 10.0.16299.0. Our application has no UI.
The first VM running the application is using Windows Server 2008R2, the second one is using Windows Server 2012. They were both using a Release build of our application.

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Qt v5.12.2 is compiled from source and statically linked to our C++ application built using Visual Studio 2017 (v15.8.6) and Windows SDK version 10.0.16299.0. Our application has no UI. The first VM running the application is using Windows Server 2008R2, the second one is using Windows Server 2012. They were both using a Release build of our application.

Platform/s:

Windows

Description

Our application crashed when a worker thread was finishing an iteration and a struct containing some QByteArray was going out of scope. Microsoft's Application Verifier was enabled with the default family of checks.

Below is the stack trace from WinDbg:

0:003> k
 # Child-SP          RetAddr           Call Site
00 00000000`0175e098 000007fe`fd701420 ntdll!NtWaitForMultipleObjects+0xa
01 00000000`0175e0a0 00000000`77981273 KERNELBASE!WaitForMultipleObjectsEx+0xe8
02 00000000`0175e1a0 00000000`779fb655 kernel32!WaitForMultipleObjectsExImplementation+0xb3
03 00000000`0175e230 00000000`779fb7d7 kernel32!WerpReportFaultInternal+0x215
04 00000000`0175e2d0 00000000`779fb82f kernel32!WerpReportFault+0x77
05 00000000`0175e300 00000000`779fba4c kernel32!BasepReportFault+0x1f
06 00000000`0175e330 00000000`77af9015 kernel32!UnhandledExceptionFilter+0x1fc
07 00000000`0175e410 00000000`77ad7388 ntdll! ?? ::FNODOBFM::`string'+0x2025
08 00000000`0175e440 00000000`77aebf7d ntdll!_C_specific_handler+0x8c
09 00000000`0175e4b0 00000000`77ac043a ntdll!RtlpExecuteHandlerForException+0xd
0a 00000000`0175e4e0 00000000`77aeb61e ntdll!RtlDispatchException+0x45a
0b 00000000`0175ebc0 00000000`77aa9912 ntdll!KiUserExceptionDispatch+0x2e
0c 00000000`0175f2d0 00000000`77aa9da0 ntdll!RtlpInsertFreeBlock+0x272
0d 00000000`0175f3a0 00000000`77aab21d ntdll!RtlpDeCommitFreeBlock+0x190
0e 00000000`0175f470 00000000`77a9c6d2 ntdll!RtlpFreeHeap+0xa4d
0f 00000000`0175f7b0 00000000`77aaa65b ntdll!RtlpFreeUserBlock+0x1f2
10 00000000`0175f840 00000000`779815aa ntdll!RtlFreeHeap+0x49b
11 00000000`0175f8c0 00000001`3fe3e470 kernel32!HeapFree+0xa
12 00000000`0175f8f0 00000001`3fa824c9 <my_app>!_free_base+0x1c [minkernel\crts\ucrt\src\appcrt\heap\free_base.cpp @ 105] 
13 (Inline Function) --------`-------- <my_app>!QTypedArrayData<char>::deallocate+0x12 [<path_to_qt>\7fba07\1\include\qtcore\qarraydata.h @ 239] 
14 (Inline Function) --------`-------- <my_app>!QByteArray::{dtor}+0x33 [<path_to_qt>\7fba07\1\include\qtcore\qbytearray.h @ 476] 
15 00000000`0175f920 00000001`3fa8209c <my_app>!CServicesWorker::run+0x349 [...\servicesworker.cpp @ 97] 
16 (Inline Function) --------`-------- <my_app>!std::_Invoker_pmf_pointer::_Call+0x5 [c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.15.26726\include\thr\xthread @ 247] 
17 (Inline Function) --------`-------- <my_app>!std::invoke+0x9 [c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.15.26726\include\thr\xthread @ 230] 
18 (Inline Function) --------`-------- <my_app>!std::_LaunchPad<std::unique_ptr<std::tuple<void (__cdecl CServicesWorker::*)(void),CServicesWorker *>,std::default_delete<std::tuple<void (__cdecl CServicesWorker::*)(void),CServicesWorker *> > > >::_Execute+0x9 [c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.15.26726\include\thr\xthread @ 238] 
19 (Inline Function) --------`-------- <my_app>!std::_LaunchPad<std::unique_ptr<std::tuple<void (__cdecl CServicesWorker::*)(void),CServicesWorker *>,std::default_delete<std::tuple<void (__cdecl CServicesWorker::*)(void),CServicesWorker *> > > >::_Run+0x55 [c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.15.26726\include\thr\xthread @ 245] 
1a 00000000`0175fa70 00000001`3fa82029 <my_app>!std::_LaunchPad<std::unique_ptr<std::tuple<void (__cdecl CServicesWorker::*)(void),CServicesWorker *>,std::default_delete<std::tuple<void (__cdecl CServicesWorker::*)(void),CServicesWorker *> > > >::_Go+0x6c [c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.15.26726\include\thr\xthread @ 230] 
1b 00000000`0175fab0 00000001`3fe27000 <my_app>!std::_Pad::_Call_func+0x9 [c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.15.26726\include\thr\xthread @ 209] 
1c (Inline Function) --------`-------- <my_app>!invoke_thread_procedure+0xd [minkernel\crts\ucrt\src\appcrt\startup\thread.cpp @ 91] 
1d 00000000`0175fae0 00000000`7797556d <my_app>!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x50 [minkernel\crts\ucrt\src\appcrt\startup\thread.cpp @ 115] 
1e 00000000`0175fb10 00000000`77ad385d kernel32!BaseThreadInitThunk+0xd
1f 00000000`0175fb40 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

Here is the analysis from WinDbg:

0:003> !analyze -v
*******************************************************************************
* *
* Exception Analysis *
* *
*******************************************************************************
DEBUG_FLR_EXCEPTION_CODE(c0000374) and the ".exr -1" ExceptionCode(c0000005) don't match
KEY_VALUES_STRING: 1
Key : AV.Fault
 Value: Read
Key : Analysis.CPU.Sec
 Value: 0
Key : Analysis.DebugAnalysisProvider.CPP
 Value: Create: 8007007e on <my_machine_name>
Key : Analysis.DebugData
 Value: CreateObject
Key : Analysis.DebugModel
 Value: CreateObject
Key : Analysis.Elapsed.Sec
 Value: 1
Key : Analysis.Memory.CommitPeak.Mb
 Value: 114
Key : Analysis.System
 Value: CreateObject
Key : Timeline.OS.Boot.DeltaSec
 Value: 2695
Key : Timeline.Process.Start.DeltaSec
 Value: 2661

NTGLOBALFLAG: 40000000
APPLICATION_VERIFIER_FLAGS: 0
CONTEXT: (.ecxr)
rax=00000001206dd000 rbx=00000000002b0000 rcx=0000000000100000
rdx=0000000000100000 rsi=00000000024063f0 rdi=00000000023f93ff
rip=0000000077aa9912 rsp=000000000175f2d0 rbp=0000000002406400
 r8=00000000023f93ff r9=00000000002b4c88 r10=00000000002b0158
r11=00000000002b4c70 r12=0000000000001900 r13=0000000000001900
r14=00000000002b1900 r15=0000000002340000
iopl=0 nv up ei ng nz ac po cy
cs=0033 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010297
ntdll!RtlpInsertFreeBlock+0x272:
00000000`77aa9912 488b08 mov rcx,qword ptr [rax] ds:00000001`206dd000=????????????????
Resetting default scope
EXCEPTION_RECORD: (.exr -1)
ExceptionAddress: 0000000077aa9912 (ntdll!RtlpInsertFreeBlock+0x0000000000000272)
 ExceptionCode: c0000005 (Access violation)
 ExceptionFlags: 00000000
NumberParameters: 2
 Parameter[0]: 0000000000000000
 Parameter[1]: 00000001206dd000
Attempt to read from address 00000001206dd000
PROCESS_NAME: <my_app>
READ_ADDRESS: 00000001206dd000
ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.
EXCEPTION_CODE_STR: c0000005
EXCEPTION_PARAMETER1: 0000000000000000
EXCEPTION_PARAMETER2: 00000001206dd000
ADDITIONAL_DEBUG_TEXT: Enable Pageheap/AutoVerifer ; Followup set based on attribute [Is_ChosenCrashFollowupThread] from Frame:[0] on thread:[PSEUDO_THREAD]
FAULTING_THREAD: 00000334
STACK_TEXT: 
00000000`00000000 00000000`00000000 heap_corruption!<my_app>+0x0

SYMBOL_NAME: heap_corruption!<my_app>
MODULE_NAME: heap_corruption
IMAGE_NAME: heap_corruption
STACK_COMMAND: ** Pseudo Context ** ManagedPseudo ** Value: 24cda8fe7a0 ** ; kb
FAILURE_BUCKET_ID: HEAP_CORRUPTION_c0000005_heap_corruption!<my_app>
OS_VERSION: 6.1.7601.24441
BUILDLAB_STR: win7sp1_ldr
OSPLATFORM_TYPE: x64
OSNAME: Windows 7
FAILURE_ID_HASH: {1b15e921-1407-e80b-86f1-dd5a8b186860}
Followup: MachineOwner
---------

I checked the "change files" of Qt 5.12.3, 5.12.4 and 5.12.5 (latest) under qtbase section without seeing any mention to an applicable bugfix.

There seems to be a corner case triggering this bug as dozens of VMs were running the same test and only 2 got a heap corruptions (not at the same place, ~~so I will create a separate ticket for the second crash~~). We did not update Qt recently nor did code changes close to where the corruption happens.

EDIT: The second crash is in fact very similar since it happens precisely after QArrayData::deallocate is called (qt5\qtbase\src\corelib\tools\qarraydata.h @ 239). The original context for the 2nd crash is that our WebSocket connection seemed to have been terminated by the remote host and we were calling QWebSocket::close as a consequence, before attempting to reconnect. Note that Application Verifier was most likely not running for this particular crash.
At the stack level of [0x26] <my_app>!QAbstractSocketPrivate::setErrorAndEmit + 0x53, we can find the following error code stored in the dump: RemoteHostClosedError (1).

Here is the stack trace:

0:001> k
 # Child-SP RetAddr Call Site
00 00000020`07447328 000007ff`3ac7115c ntdll!NtWaitForSingleObject+0xa
01 00000020`07447330 000007ff`3ac7150b ntdll!RtlReportExceptionEx+0x22c
02 00000020`07447460 000007ff`3ac9a5b2 ntdll!RtlReportException+0xbb
03 00000020`074474f0 000007ff`3abd9e2e ntdll!RtlReportCriticalFailure$filt$0+0x33
04 00000020`07447520 000007ff`3aca8942 ntdll!_C_specific_handler+0x8e
05 00000020`07447590 000007ff`3abd948d ntdll!_GSHandlerCheck_SEH+0x76
06 00000020`074475c0 000007ff`3abda4b8 ntdll!RtlpExecuteHandlerForException+0xd
07 00000020`074475f0 000007ff`3abda95c ntdll!RtlDispatchException+0x392
08 00000020`07447d00 000007ff`3ac9a535 ntdll!RtlRaiseException+0x27e
09 00000020`074484e0 000007ff`3ac9f350 ntdll!RtlReportCriticalFailure+0x89
0a 00000020`074485f0 000007ff`3ac463b9 ntdll!RtlpLogHeapFailure+0xa4
0b 00000020`07448620 000007ff`3abc59c2 ntdll!RtlpFreeHeap+0x11d0
0c 00000020`07448880 000007f7`dfbde470 ntdll!RtlFreeHeap+0x6a4
0d 00000020`07448920 000007f7`df836c12 <my_app>!_free_base+0x1c [minkernel\crts\ucrt\src\appcrt\heap\free_base.cpp @ 105] 
0e (Inline Function) --------`-------- <my_app>!QTypedArrayData<char>::deallocate+0x11 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\tools\qarraydata.h @ 239] 
0f 00000020`07448950 000007f7`df8db58e <my_app>!QByteArray::operator=+0x52 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\tools\qbytearray.cpp @ 1289] 
10 (Inline Function) --------`-------- <my_app>!QRingChunk::assign+0x19 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\tools\qringbuffer_p.h @ 164] 
11 (Inline Function) --------`-------- <my_app>!QRingChunk::clear+0x19 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\tools\qringbuffer_p.h @ 174] 
12 00000020`07448980 000007f7`df984108 <my_app>!QRingBuffer::clear+0x5e [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\tools\qringbuffer.cpp @ 241] 
13 (Inline Function) --------`-------- <my_app>!QIODevicePrivate::QRingBufferRef::clear+0x11 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\io\qiodevice_p.h @ 110] 
14 00000020`074489b0 000007f7`dfb885a4 <my_app>!QSslSocket::close+0x88 [<path_to_qt>5cee31\1\qt5\qtbase\src\network\ssl\qsslsocket.cpp @ 834] 
15 00000020`074489e0 000007f7`dfb85846 <my_app>!QWebSocketPrivate::close+0x394 [<path_to_qt>5cee31\1\qt5\qtwebsockets\src\websockets\qwebsocket_p.cpp @ 365] 
16 00000020`07448a80 000007f7`dfa92c2e <my_app>!QWebSocket::close+0x36 [<path_to_qt>5cee31\1\qt5\qtwebsockets\src\websockets\qwebsocket.cpp @ 414] 
17 00000020`07448ab0 000007f7`dfaa32a7 <my_app>!...disconnect+0x61e [<my_source_file> @ 436] 
18 00000020`07448da0 000007f7`dfaa574c <my_app>!...reconnect+0x5f7 [<my_source_file> @ 470] 
19 00000020`074490a0 000007f7`dfaa0950 <my_app>!...sockErrReconnect+0x61c [<my_source_file> @ 480] 
1a 00000020`07449380 000007f7`df83cadd <my_app>!...onWebSockErrors+0x2830 [<my_source_file> @ 344] 
1b (Inline Function) --------`-------- <my_app>!QtPrivate::QSlotObjectBase::call+0x24 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qobjectdefs_impl.h @ 394] 
1c 00000020`0744a780 000007f7`dfb86012 <my_app>!QMetaObject::activate+0x4fd [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qobject.cpp @ 3780] 
1d 00000020`0744a8a0 000007f7`df83cadd <my_app>!QWebSocket::error+0x32 [<path_to_qt>aecc37\1\qtwebsockets\src\websockets\.moc\release\moc_qwebsocket.cpp @ 462] 
1e (Inline Function) --------`-------- <my_app>!QtPrivate::QSlotObjectBase::call+0x24 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qobjectdefs_impl.h @ 394] 
1f 00000020`0744a8e0 000007f7`df9c79e3 <my_app>!QMetaObject::activate+0x4fd [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qobject.cpp @ 3780] 
20 (Inline Function) --------`-------- <my_app>!QAbstractSocket::error+0x31 [<path_to_qt>aecc37\1\qtbase\src\network\.moc\release\moc_qabstractsocket.cpp @ 399] 
21 00000020`0744aa00 000007f7`df982d89 <my_app>!QAbstractSocketPrivate::setErrorAndEmit+0x53 [<path_to_qt>5cee31\1\qt5\qtbase\src\network\socket\qabstractsocket.cpp @ 1438] 
22 (Inline Function) --------`-------- <my_app>!QSslSocketPrivate::_q_errorSlot+0x61 [<path_to_qt>5cee31\1\qt5\qtbase\src\network\ssl\qsslsocket.cpp @ 2561] 
23 00000020`0744aa40 000007f7`df83cbbe <my_app>!QSslSocket::qt_static_metacall+0x4c9 [<path_to_qt>aecc37\1\qtbase\src\network\.moc\release\moc_qsslsocket.cpp @ 184] 
24 00000020`0744ab50 000007f7`df9c79e3 <my_app>!QMetaObject::activate+0x5de [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qobject.cpp @ 3796] 
25 (Inline Function) --------`-------- <my_app>!QAbstractSocket::error+0x31 [<path_to_qt>aecc37\1\qtbase\src\network\.moc\release\moc_qabstractsocket.cpp @ 399] 
26 00000020`0744ac70 000007f7`df9c753e <my_app>!QAbstractSocketPrivate::setErrorAndEmit+0x53 [<path_to_qt>5cee31\1\qt5\qtbase\src\network\socket\qabstractsocket.cpp @ 1438] 
27 00000020`0744acb0 000007f7`df9c5aba <my_app>!QAbstractSocketPrivate::readFromSocket+0x19e [<path_to_qt>5cee31\1\qt5\qtbase\src\network\socket\qabstractsocket.cpp @ 1288] 
28 00000020`0744bcf0 000007f7`df9f5e73 <my_app>!QAbstractSocketPrivate::canCloseNotification+0x5a [<path_to_qt>5cee31\1\qt5\qtbase\src\network\socket\qabstractsocket.cpp @ 766] 
29 00000020`0744be60 000007f7`df84dfd6 <my_app>!QReadNotifier::event+0x33 [<path_to_qt>5cee31\1\qt5\qtbase\src\network\socket\qnativesocketengine.cpp @ 1278] 
2a 00000020`0744be90 000007f7`df84dce7 <my_app>!QCoreApplicationPrivate::notify_helper+0x206 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qcoreapplication.cpp @ 1225] 
2b (Inline Function) --------`-------- <my_app>!doNotify+0x57 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qcoreapplication.cpp @ 1150] 
2c 00000020`0744bf10 000007f7`df84dda9 <my_app>!QCoreApplication::notify+0x67 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qcoreapplication.cpp @ 1137] 
2d 00000020`0744bf60 000007f7`df8f0858 <my_app>!QCoreApplication::notifyInternal2+0xb9 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qcoreapplication.cpp @ 1060] 
2e 00000020`0744bfe0 000007ff`3a7b171e <my_app>!qt_internal_proc+0x498 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qeventdispatcher_win.cpp @ 201] 
2f 00000020`0744c130 000007ff`3a7b14d7 user32!UserCallWinProcCheckWow+0x13a
30 00000020`0744c1f0 000007f7`df8f0079 user32!DispatchMessageWorker+0x1a7
31 00000020`0744c270 000007f7`df87c94b <my_app>!QEventDispatcherWin32::processEvents+0x5b9 [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qeventdispatcher_win.cpp @ 647] 
32 (Inline Function) --------`-------- <my_app>!QEventLoop::processEvents+0x1f [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qeventloop.cpp @ 138] 
33 00000020`0744f3f0 000007f7`df84cfff <my_app>!QEventLoop::exec+0x1fb [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qeventloop.cpp @ 225] 
34 00000020`0744f470 000007f7`df808436 <my_app>!QCoreApplication::exec+0x13f [<path_to_qt>5cee31\1\qt5\qtbase\src\corelib\kernel\qcoreapplication.cpp @ 1363] 
35 00000020`0744f4e0 000007ff`3a904ac5 <my_app>!CoordinatorServiceMain+0xc16 [<my_app>\src\<my_app>.cpp @ 252] 
36 00000020`0744faf0 000007ff`39cd1842 sechost!ScSvcctrlThreadW+0x25
37 00000020`0744fb20 000007ff`3ac0e2f9 kernel32!BaseThreadInitThunk+0x1a
38 00000020`0744fb50 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

and the analysis from WinDbg:

0:001> !analyze -v
*******************************************************************************
* *
* Exception Analysis *
* *
*******************************************************************************

KEY_VALUES_STRING: 1
Key : Analysis.CPU.Sec
 Value: 1
Key : Analysis.DebugAnalysisProvider.CPP
 Value: Create: 8007007e on <my_machine_name>
Key : Analysis.DebugData
 Value: CreateObject
Key : Analysis.DebugModel
 Value: CreateObject
Key : Analysis.Elapsed.Sec
 Value: 122
Key : Analysis.Memory.CommitPeak.Mb
 Value: 167
Key : Analysis.System
 Value: CreateObject
Key : Timeline.OS.Boot.DeltaSec
 Value: 7457
Key : Timeline.Process.Start.DeltaSec
 Value: 7449

NTGLOBALFLAG: 40000000
APPLICATION_VERIFIER_FLAGS: 0
CONTEXT: (.ecxr)
rax=000000000005d096 rbx=00000000c0000374 rcx=0000000000000000
rdx=0000000000000000 rsi=0000000000000000 rdi=000007ff3aceed30
rip=000007ff3ac9a535 rsp=00000020074484e0 rbp=000000ffffffffff
 r8=0000000000000000 r9=0000002007439000 r10=0000000000000000
r11=0000000000000003 r12=0000002008138140 r13=0000000000000000
r14=0000000000000003 r15=0000002008138100
iopl=0 nv up ei pl nz na po nc
cs=0033 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000206
ntdll!RtlReportCriticalFailure+0x89:
000007ff`3ac9a535 eb00 jmp ntdll!RtlReportCriticalFailure+0x8b (000007ff`3ac9a537)
Resetting default scope
EXCEPTION_RECORD: (.exr -1)
ExceptionAddress: 000007ff3ac9a535 (ntdll!RtlReportCriticalFailure+0x0000000000000089)
 ExceptionCode: c0000374
 ExceptionFlags: 00000001
NumberParameters: 1
 Parameter[0]: 000007ff3aceed30
PROCESS_NAME: <my_app>
ERROR_CODE: (NTSTATUS) 0xc0000374 - A heap has been corrupted.
EXCEPTION_CODE_STR: c0000374
EXCEPTION_PARAMETER1: 000007ff3aceed30
ADDITIONAL_DEBUG_TEXT: Followup set based on attribute [Is_ChosenCrashFollowupThread] from Frame:[0] on thread:[PSEUDO_THREAD]
FAULTING_THREAD: ffffffff
STACK_TEXT: 
00000000`00000000 00000000`00000000 heap_corruption!<my_app>+0x0

SYMBOL_NAME: heap_corruption!<my_app>
MODULE_NAME: heap_corruption
IMAGE_NAME: heap_corruption
STACK_COMMAND: !heap ; ** Pseudo Context ** ManagedPseudo ** Value: 20b9ecfdf80 ** ; kb
FAILURE_BUCKET_ID: HEAP_CORRUPTION_c0000374_heap_corruption!<my_app>
OS_VERSION: 6.2.9200.16384
BUILDLAB_STR: win8_rtm
OSPLATFORM_TYPE: x64
OSNAME: Windows 8
FAILURE_ID_HASH: {5215d6d2-2f0b-c3e1-1e12-577b9bdd562c}
Followup: MachineOwner
---------

Thank you in advance for letting me know if any information is missing.

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QTBUG-61752 Exe with static linked Qt: Crash an start (Debug only, VS 2017<15.7.3): Invalid address specified to RtlValidateHeap

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HEAP_CORRUPTION when disposing of QByteArray object

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