Exception after breakpoint "write access violation"

dATTEMPT SYNC

sStarting debugger "CdbEngine" for ABI "x86-windows-msvc2012-pe-64bit"...
dStart parameters: 'qt_test' mode: 1
dABI: x86-windows-msvc2012-pe-64bit
dLanguages: c++ 
dExecutable: C:\usr\tmp\build-qt_test-vs11_qt510_amd64-Debug\debug\qt_test.exe  [terminal]
dDirectory: C:\usr\tmp\build-qt_test-vs11_qt510_amd64-Debug
dDebugger: C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\cdb.exe
dProject: C:\usr\tmp\qt_test (built: C:\usr\tmp\build-qt_test-vs11_qt510_amd64-Debug)
dQML server: 127.0.0.1:3768
dRemote: :0
dSysroot: 
dDebug Source Location: /usr/src/debug/qt5base/src/corelib:/usr/src/debug/qt5base/src/gui:/usr/src/debug/qt5base/src/network
dSymbol file: 
dDumper libraries:  C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\\qtc-debugging-helper\ C:\usr\tools\qtcreator-2.7.82\qtc-debugging-helper\21191119\ C:\Users\mayema\AppData\Local\QtProject\QtCreator\qtc-debugging-helper\21191119\
dDebugger settings: 
dUseAlternatingRowColours: false  (default: false)
dFontSizeFollowsEditor: false  (default: false)
dUseMessageBoxForSignals: false  (default: true)  ***
dAutoQuit: false  (default: false)
dLogTimeStamps: false  (default: false)
dVerboseLog: true  (default: false)  ***
dCloseBuffersOnExit: false  (default: false)
dSwitchModeOnExit: false  (default: false)
dBreakpointsFullPath: true  (default: false)  ***
dRaiseOnInterrupt: false  (default: true)  ***
dUseDebuggingHelper: false  (default: true)  ***
dUseCodeModel: true  (default: true)
dShowThreadNames: false  (default: false)
dUseToolTips: false  (default: false)
dUseToolTipsInLocalsView: false  (default: false)
dUseToolTipsInBreakpointsView: false  (default: false)
dUseAddressInBreakpointsView: false  (default: false)
dUseAddressInStackView: false  (default: false)
dRegisterForPostMortem: false  (default: false)
dAdditionalArguments: -x  (default: )  ***
dSymbolPaths:   (default: )
dSourcePaths:   (default: )
dBreakEvent:   (default: )
dBreakOnCrtDbgReport: false  (default: false)
dCDB_Console: true  (default: false)  ***
dBreakpointCorrection: false  (default: true)  ***
dIgnoreFirstChanceAccessViolation: false  (default: false)
dLoadGdbInit: false  (default: true)  ***
dLoadGdbDumpers: false  (default: true)  ***
dAttemptQuickStart: false  (default: false)
dGdbStartupCommands:   (default: )
dGdbPostAttachCommands:   (default: )
dWatchdogTimeout: 20  (default: 20)
dAutoEnrichParameters: false  (default: true)  ***
dUseDynamicType: false  (default: true)  ***
dTargetAsync: false  (default: false)
dWarnOnReleaseBuilds: true  (default: true)
dMultiInferior: false  (default: false)
dIntelFlavor: false  (default: false)
dIdentifyDebugInfoPackages: false  (default: false)
dMaximalStackDepth: 20  (default: 20)
dAlwaysAdjustStackColumnWidths: false  (default: false)
dShowStandardNamespace: true  (default: true)
dShowQtNamespace: true  (default: true)
dSortStructMembers: true  (default: true)
dAutoDerefPointers: true  (default: true)
dAlwaysAdjustLocalsColumnWidths: false  (default: false)
dMaximalStringLength: 20000  (default: 10000)  ***
dListSourceFiles: false  (default: false)
dSkipKnownFrames: false  (default: false)
dEnableReverseDebugging: false  (default: false)
dAllPluginBreakpoints: true  (default: true)
dSelectedPluginBreakpoints: false  (default: false)
dAdjustBreakpointLocations: false  (default: true)  ***
dAlwaysAdjustBreakpointsColumnWidths: false  (default: false)
dNoPluginBreakpoints: false  (default: false)
dSelectedPluginBreakpointsPattern: .*  (default: .*)
dBreakOnThrow: false  (default: false)
dBreakOnCatch: false  (default: false)
dBreakOnWarning: false  (default: false)
dBreakOnFatal: false  (default: false)
dBreakOnAbort: false  (default: false)
dAlwaysAdjustRegistersColumnWidths: false  (default: false)
dAlwaysAdjustSnapshotsColumnWidths: false  (default: false)
dAlwaysAdjustThreadsColumnWidths: false  (default: false)
dAlwaysAdjustModulesColumnWidths: false  (default: false)
dShowQmlObjectTree: true  (default: true)
dQmlInspector.ShowAppOnTop: false  (default: false)
dQmlInspector.FromQml: false  (default: false)
dState changed from DebuggerNotReady(0) to EngineSetupRequested(1) [master]
dQUEUE: SETUP ENGINE
dCALL: SETUP ENGINE
 Launching C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\cdb.exe -aqtcreatorcdbext.dll -lines -G -c .idle_cmd !qtcreatorcdbext.idle -2 -y symsrv*symsrv.dll*C:\usr\tmp\symbolcache*http://msdl.microsoft.com/download/symbols;cache*C:\usr\tmp\symbolcache;srv*http://msdl.microsoft.com/download/symbols -x  C:\usr\tmp\build-qt_test-vs11_qt510_amd64-Debug\debug\qt_test.exe
 using C:\usr\tools\qtcreator-2.7.82\lib\qtcreatorcdbext64\qtcreatorcdbext.dll of 29.05.2013 12:38:32.
 C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\cdb.exe running as 9876

 Microsoft (R) Windows Debugger Version 6.2.9200.16384 AMD64
 Copyright (c) Microsoft Corporation. All rights reserved.
 CommandLine: C:\usr\tmp\build-qt_test-vs11_qt510_amd64-Debug\debug\qt_test.exe

 Symbol search path is: symsrv*symsrv.dll*C:\usr\tmp\symbolcache*http://msdl.microsoft.com/download/symbols;cache*C:\usr\tmp\symbolcache;srv*http://msdl.microsoft.com/download/symbols
 Executable search path is: 
 ModLoad: 00000001`3fec0000 00000001`3fed1000   qt_test.exe
 ModLoad: 00000000`77150000 00000000`772f9000   ntdll.dll
 ModLoad: 00000000`77030000 00000000`7714f000   C:\Windows\system32\kernel32.dll
 ModLoad: 000007fe`fd150000 000007fe`fd1bb000   C:\Windows\system32\KERNELBASE.dll
 ModLoad: 00000000`66b30000 00000000`674dd000   C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\Qt5Cored.dll
 ModLoad: 00000000`76f30000 00000000`7702a000   C:\Windows\system32\USER32.dll
 ModLoad: 000007fe`fd760000 000007fe`fd7c7000   C:\Windows\system32\GDI32.dll
 ModLoad: 000007fe`feb50000 000007fe`feb5e000   C:\Windows\system32\LPK.dll
 ModLoad: 000007fe`fd850000 000007fe`fd919000   C:\Windows\system32\USP10.dll
 ModLoad: 000007fe`ff070000 000007fe`ff10f000   C:\Windows\system32\msvcrt.dll
 ModLoad: 000007fe`ff130000 000007fe`ff333000   C:\Windows\system32\ole32.dll
 ModLoad: 000007fe`fd920000 000007fe`fda4d000   C:\Windows\system32\RPCRT4.dll
 ModLoad: 000007fe`fd550000 000007fe`fd62b000   C:\Windows\system32\ADVAPI32.dll
 ModLoad: 000007fe`ff050000 000007fe`ff06f000   C:\Windows\SYSTEM32\sechost.dll
 ModLoad: 000007fe`ff3e0000 000007fe`ff42d000   C:\Windows\system32\WS2_32.dll
 ModLoad: 000007fe`fee60000 000007fe`fee68000   C:\Windows\system32\NSI.dll
 ModLoad: 00000000`49da0000 00000000`49fc8000   C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icuin51.dll
 ModLoad: 00000000`4a6d0000 00000000`4a874000   C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icuuc51.dll
 ModLoad: 00000000`00450000 00000000`0199a000   C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icudt51.dll
 ModLoad: 000007fe`eb950000 000007fe`eba1e000   C:\Windows\system32\MSVCR110.dll
 ModLoad: 000007fe`ebb10000 000007fe`ebbb7000   C:\Windows\system32\MSVCP110.dll
 ModLoad: 000007fe`eaab0000 000007fe`eabc4000   C:\Windows\system32\MSVCP110D.dll
 ModLoad: 000007fe`e85b0000 000007fe`e8792000   C:\Windows\system32\MSVCR110D.dll
 (2508.1b70): Break instruction exception - code 80000003 (first chance)
 ntdll!LdrpDoDebuggerBreak+0x30:
 00000000`771fcb60 cc              int     3
 cdb: Reading initial command '.idle_cmd !qtcreatorcdbext.idle'
 Execute when idle: !qtcreatorcdbext.idle
 0:000>
<l+t
<l+s
dNOTE: ENGINE SETUP OK
dState changed from EngineSetupRequested(1) to EngineSetupOk(3) [master]
dQUEUE: SETUP INFERIOR
dState changed from EngineSetupOk(3) to InferiorSetupRequested(4) [master]
dQUEUE: SETUP INFERIOR
dCALL: SETUP INFERIOR
<bu1001 `C:\usr\tmp\qt_test\main.cpp:15`
<!qtcreatorcdbext.breakpoints -t 0 -v
<sxn 0x4000001f
<.asm source_line
<!qtcreatorcdbext.setparameter maxStringLength=20000 maxStackDepth=20
<!qtcreatorcdbext.pid -t 1
dATTEMPT SYNC

 Source options are 1:
      1/t - Step/trace by source line
 Source options are 5:
      1/t - Step/trace by source line
      4/s - List source code at prompt

 *** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icudt51.dll - 
 *** WARNING: Unable to verify checksum for C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icuin51.dll
 *** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icuin51.dll - 
 *** WARNING: Unable to verify checksum for C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icuuc51.dll
 *** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\icuuc51.dll - 
 *** WARNING: Unable to verify checksum for C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\Qt5Cored.dll
 *** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\usr\local\Qt5.1.0\5.1.0-beta1\msvc2012_64_opengl\bin\Qt5Cored.dll - 
 *** WARNING: Unable to verify checksum for qt_test.exe

 Obtained breakpoint 0x23d308 (#1), at 0x13fec13e4, module: 'qt_test'
 All breakpoints have been resolved.
 Assembly options: source_line
 Qt Creator CDB extension version 2.7 (Qt 5 support) 64 bit built Feb 22 2013.
dTaking notice of pid 9480
dNOTE: INFERIOR SETUP OK
dState changed from InferiorSetupRequested(4) to InferiorSetupOk(6) [master]
dState changed from InferiorSetupOk(6) to EngineRunRequested(7) [master]
dQUEUE: RUN ENGINE
dCALL: RUN ENGINE
<g

dNOTE: ENGINE RUN AND INFERIOR RUN OK
sRunning.
dState changed from EngineRunRequested(7) to InferiorRunOk(11) [master]
 ModLoad: 000007fe`ff430000 000007fe`ff45e000   C:\Windows\system32\IMM32.DLL
 ModLoad: 000007fe`fea40000 000007fe`feb49000   C:\Windows\system32\MSCTF.dll
 Breakpoint 1001 hit
 >   15:   if (x == 12) {
 qt_test!main+0x34:
    15 00000001`3fec13e4 837c24200c      cmp     dword ptr [rsp+20h],0Ch ss:00000000`0022f690=0c000000
sStopped at breakpoint 1 (1) in thread 0.
dNOTE: INFERIOR SPONTANEOUS STOP
sStopped.
dState changed from InferiorRunOk(11) to InferiorStopOk(14) [master]
 Checking for wow64 subsystem...
<!wow64exts.info

<!qtcreatorcdbext.locals -t 3 -D -e return,local,watch,inspect -v -W 0

 DEBUG: 
 DEBUG: Discarding watchers
 DEBUG: expandEntrySet local 
 DEBUG: Qt Info: Version: 5 Modules 'Qt5Cored', 'Qt5Guid', Namespace='', types: Qt5Cored!QObject,Qt5Cored!QObjectPrivate,Qt5Widgetsd!QWidgetPrivate
dLocals: [{iname="local.argc",name="argc",type="int",exp="*(int *)0x22f730",addr="0x22f730",size="4",valueencoded="0",value="1",valueenabled="true",valueeditable="true",numchild="0"},{iname="local.argv",name="argv",type="char **",exp="*(char ***)0x22f738",addr="0x35c800",origaddr="0x22f738",size="8",valueencoded="0",value="0x35c800",valueenabled="true",valueeditable="false",numchild="1"},{iname="local.teststring",name="teststring",type="class QString",exp="*(QString *)0x22f6b0",addr="0x22f6b0",size="8",valueencoded="0",value="\"B11x\"",valueenabled="true",valueeditable="true",numchild="2"},{iname="local.x",name="x",type="int",exp="*(int *)0x22f690",addr="0x22f690",size="4",valueencoded="0",value="12",valueenabled="true",valueeditable="true",numchild="0"}]

<p
dNOTE: INFERIOR RUN REQUESTED
sRun requested...
dState changed from InferiorStopOk(14) to InferiorRunRequested(10) [master]

dNOTE: INFERIOR RUN OK
sRunning.
dState changed from InferiorRunRequested(10) to InferiorRunOk(11) [master]
 (2508.1b70): Access violation - code c0000005 (first chance)
s
sException at 0x13fec13e7, code: 0xc0000005: write access violation at: 0x1, flags=0x0 (first chance) at c:\usr\tmp\qt_test\main.cpp:15
 (2508.1b70): Access violation - code c0000005 (!!! second chance !!!)
s
sException at 0x13fec13e7, code: 0xc0000005: write access violation at: 0x1, flags=0x0 at c:\usr\tmp\qt_test\main.cpp:15
 >   15:   if (x == 12) {
 qt_test!main+0x37:
    15 00000001`3fec13e7 200c755c4c8d0d  and     byte ptr [rsi*2+0D8D4C5Ch],cl ds:00000000`0d8d4c5c=??
s
sException at 0x13fec13e7, code: 0xc0000005: write access violation at: 0x1, flags=0x0
dNOTE: INFERIOR SPONTANEOUS STOP
sStopped.
dState changed from InferiorRunOk(11) to InferiorStopOk(14) [master]
<!qtcreatorcdbext.locals -t 4 -D -e return,local,watch,inspect -v -W 0

 DEBUG: 
 DEBUG: Discarding watchers
 DEBUG: expandEntrySet local 
dLocals: [{iname="local.argc",name="argc",type="int",exp="*(int *)0x22f730",addr="0x22f730",size="4",valueencoded="0",value="1",valueenabled="true",valueeditable="true",numchild="0"},{iname="local.argv",name="argv",type="char **",exp="*(char ***)0x22f738",addr="0x35c800",origaddr="0x22f738",size="8",valueencoded="0",value="0x35c800",valueenabled="true",valueeditable="false",numchild="1"},{iname="local.teststring",name="teststring",type="class QString",exp="*(QString *)0x22f6b0",addr="0x22f6b0",size="8",valueencoded="0",value="\"B11x\"",valueenabled="true",valueeditable="true",numchild="2"},{iname="local.x",name="x",type="int",exp="*(int *)0x22f690",addr="0x22f690",size="4",valueencoded="0",value="12",valueenabled="true",valueeditable="true",numchild="0"}]

<p
dNOTE: INFERIOR RUN REQUESTED
sRun requested...
dState changed from InferiorStopOk(14) to InferiorRunRequested(10) [master]

dNOTE: INFERIOR RUN OK
sRunning.
dState changed from InferiorRunRequested(10) to InferiorRunOk(11) [master]
 (2508.1b70): Access violation - code c0000005 (first chance)
s
sException at 0x13fec13e7, code: 0xc0000005: write access violation at: 0x1, flags=0x0 (first chance) at c:\usr\tmp\qt_test\main.cpp:15
 (2508.1b70): Access violation - code c0000005 (!!! second chance !!!)
s
sException at 0x13fec13e7, code: 0xc0000005: write access violation at: 0x1, flags=0x0 at c:\usr\tmp\qt_test\main.cpp:15
 >   15:   if (x == 12) {
 qt_test!main+0x37:
    15 00000001`3fec13e7 200c755c4c8d0d  and     byte ptr [rsi*2+0D8D4C5Ch],cl ds:00000000`0d8d4c5c=??
s
sException at 0x13fec13e7, code: 0xc0000005: write access violation at: 0x1, flags=0x0
dNOTE: INFERIOR SPONTANEOUS STOP
sStopped.
dState changed from InferiorRunOk(11) to InferiorStopOk(14) [master]
<!qtcreatorcdbext.locals -t 5 -D -e return,local,watch,inspect -v -W 0

 DEBUG: 
 DEBUG: Discarding watchers
 DEBUG: expandEntrySet local 
dLocals: [{iname="local.argc",name="argc",type="int",exp="*(int *)0x22f730",addr="0x22f730",size="4",valueencoded="0",value="1",valueenabled="true",valueeditable="true",numchild="0"},{iname="local.argv",name="argv",type="char **",exp="*(char ***)0x22f738",addr="0x35c800",origaddr="0x22f738",size="8",valueencoded="0",value="0x35c800",valueenabled="true",valueeditable="false",numchild="1"},{iname="local.teststring",name="teststring",type="class QString",exp="*(QString *)0x22f6b0",addr="0x22f6b0",size="8",valueencoded="0",value="\"B11x\"",valueenabled="true",valueeditable="true",numchild="2"},{iname="local.x",name="x",type="int",exp="*(int *)0x22f690",addr="0x22f690",size="4",valueencoded="0",value="12",valueenabled="true",valueeditable="true",numchild="0"}]