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  4. QAbstractItemView::dataChanged caused application crash, how to debug this issue ?
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QAbstractItemView::dataChanged caused application crash, how to debug this issue ?

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  • A Offline
    A Offline
    AkGustav
    wrote on last edited by AkGustav
    #1

    As you see in the call stack below, the crash happened during the execution of the function QAbstractItemView::dataChanged. I have no clue how locate the origin of this issue in my code. Any help plz ?

    This is the content of the stack of the interrupted thread at the moment of the crash:

    <threads>
  <thread>
    <id>7928</id>
    <status>interrupted</status>
    <stack>
      <frame>
        <module>C:\Program Files\xxxxxxxx\Qt5\bin\Qt5Widgets_v142_x64.dll</module>
        <address>0033:0000000054D1742A</address>
        <function>
          <name>QAbstractItemView::dataChanged</name>
          <offset>26</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxxx\Qt5\bin\Qt5Core_v142_x64.dll</module>
        <address>0033:000000005E458A1F</address>
        <function>
          <name>QObject::event</name>
          <offset>255</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxxx\Qt5\bin\Qt5Widgets_v142_x64.dll</module>
        <address>0033:0000000054B2B5D5</address>
        <function>
          <name>QWidget::event</name>
          <offset>3493</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxx\Qt5\bin\Qt5Widgets_v142_x64.dll</module>
        <address>0033:0000000054BC8770</address>
        <function>
          <name>QFrame::event</name>
          <offset>48</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxx\Qt5\bin\Qt5Widgets_v142_x64.dll</module>
        <address>0033:0000000054BC9E98</address>
        <function>
          <name>QAbstractScrollArea::event</name>
          <offset>1144</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxx\Qt5\bin\Qt5Widgets_v142_x64.dll</module>
        <address>0033:0000000054B06D33</address>
        <function>
          <name>QApplicationPrivate::notify_helper</name>
          <offset>275</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxx\Qt5\bin\Qt5Widgets_v142_x64.dll</module>
        <address>0033:0000000054B05C98</address>
        <function>
          <name>QApplication::notify</name>
          <offset>6184</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxx\Qt5\bin\Qt5Core_v142_x64.dll</module>
        <address>0033:000000005E432A8C</address>
        <function>
          <name>QCoreApplication::notifyInternal2</name>
          <offset>172</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxxx\Qt5\bin\Qt5Core_v142_x64.dll</module>
        <address>0033:000000005E43472F</address>
        <function>
          <name>QCoreApplicationPrivate::sendPostedEvents</name>
          <offset>527</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxxx\Qt5\bin\plugins\platforms\qwindows_v142_x64.dll</module>
        <address>0033:0000000095C9289F</address>
        <function>
          <name>qt_plugin_query_metadata</name>
          <offset>7871</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxxxx\Qt5\bin\Qt5Core_v142_x64.dll</module>
        <address>0033:000000005E47BE6F</address>
        <function>
          <name>QEventDispatcherWin32::processEvents</name>
          <offset>3471</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\WINDOWS\System32\USER32.dll</module>
        <address>0033:00000000BB40E858</address>
        <function>
          <name>CallWindowProcW</name>
          <offset>1016</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\WINDOWS\System32\USER32.dll</module>
        <address>0033:00000000BB40E299</address>
        <function>
          <name>DispatchMessageW</name>
          <offset>601</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxxx\Qt5\bin\Qt5Core_v142_x64.dll</module>
        <address>0033:000000005E47B6A3</address>
        <function>
          <name>QEventDispatcherWin32::processEvents</name>
          <offset>1475</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxxx\Qt5\bin\plugins\platforms\qwindows_v142_x64.dll</module>
        <address>0033:0000000095C92879</address>
        <function>
          <name>qt_plugin_query_metadata</name>
          <offset>7833</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxx\Qt5\bin\Qt5Core_v142_x64.dll</module>
        <address>0033:000000005E42EFDB</address>
        <function>
          <name>QEventLoop::exec</name>
          <offset>459</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxx\Qt5\bin\Qt5Core_v142_x64.dll</module>
        <address>0033:000000005E4319A4</address>
        <function>
          <name>QCoreApplication::exec</name>
          <offset>340</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\Program Files\xxxxxxxx\Qt5\bin\QtWinMigrate_v142_x64.dll</module>
        <address>0033:00000000AB723548</address>
        <function>
          <name>QMfcApp::run</name>
          <offset>56</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\xxxx\xxxxxxxx\bin\MyApp_x64.exe</module>
        <address>0033:00000000B1126C7C</address>
        <function>
          <name></name>
          <offset></offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\xxxx\xxxxxxx\bin\mfc140u.dll</module>
        <address>0033:0000000076639FF7</address>
        <function>
          <name></name>
          <offset></offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\xxxx\xxxxxxx\bin\MyApp_x64.exe</module>
        <address>0033:00000000B1160C6A</address>
        <function>
          <name></name>
          <offset></offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\WINDOWS\System32\KERNEL32.DLL</module>
        <address>0033:00000000BCAB7034</address>
        <function>
          <name>BaseThreadInitThunk</name>
          <offset>20</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
      <frame>
        <module>C:\WINDOWS\SYSTEM32\ntdll.dll</module>
        <address>0033:00000000BD322651</address>
        <function>
          <name>RtlUserThreadStart</name>
          <offset>33</offset>
        </function>
        <file></file>
        <line>
          <number></number>
          <offset></offset>
        </line>
      </frame>
    </stack>
  </thread>
  <thread>
    JonBJ 1 Reply Last reply
    0
  • JonBJ Online
    JonBJ Online
    JonB
    replied to AkGustav on last edited by
    #2

    @AkGustav
    Hello and welcome.

    If you run your program under a debugger you should get a stack trace at the point of the crash. This should give you the location in your code where it emanates from.

    A 1 Reply Last reply
    1
  • A Offline
    A Offline
    AkGustav
    replied to JonB on last edited by
    #3

    @JonB My application generates dmp file. When I run it, the crash is situated at the starting point of Qt MFC event loop :

    int nResult = QMfcApp::run(this);
    JonBJ 1 Reply Last reply
    0
  • JonBJ Online
    JonBJ Online
    JonB
    replied to AkGustav on last edited by JonB
    #4

    @AkGustav
    That is not enough information to help. From a debugger you should get some stack trace. Unless you can get that from a "dmp file", I would not know.

    Actually you can guess from the content you show that it died in QAbstractItemView::dataChanged() called from QAbstractScrollArea::event(). What/why I don't know.

    Build your code with debug, run under a debugger, and see if you can track down what the problem is. Have you have written your own model? Use QAbstractItemModelTester Class to test it.

    1 Reply Last reply
    0

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