Random crash during setup(ui), retranslante step

[jsulm]

@Match0um Hi!
You should post the whole stack trace after the crash.

[Match0um]

Ji @jsulm

Thanks for helping.
Is this what you expect ?
I am not familiar with stack trace :(

Stopped.
115importPlainDumpers off
Stopped: Unknown signal (Signal ?).
116-thread-info
117-stack-select-frame 1
118python theDumper.fetchVariables({"autoderef":1,"context":"","displaystringlimit":"100","dyntype":1,"expanded":["watch","inspect","return","local"],"fancy":1,"formats":{},"nativemixed":0,"partialvar":"","passexceptions":0,"qobjectnames":1,"resultvarname":"","stringcutoff":"10000","timestamps":0,"token":118,"typeformats":{},"watchers":[{"exp":"6b65795043","iname":"watch.0"}]})
119python theDumper.fetchStack({"limit":20,"nativemixed":0,"token":119})
<Rebuild Watchmodel 6 @ 11:45:06.080 [697430ms] >
120-stack-select-frame 1
121python theDumper.fetchVariables({"autoderef":1,"context":"","displaystringlimit":"100","dyntype":1,"expanded":["watch","inspect","return","local"],"fancy":1,"formats":{},"nativemixed":0,"partialvar":"","passexceptions":0,"qobjectnames":1,"resultvarname":"","stringcutoff":"10000","timestamps":0,"token":121,"typeformats":{},"watchers":[{"exp":"6b65795043","iname":"watch.0"}]})
<Rebuild Watchmodel 7 @ 11:45:06.146 [66ms] >

[jsulm]

@Match0um No, this isn't. The stack trace is what you will see in the debugger. It is basically the call sequence, so you can see what was called.

[Match0um]

@jsulm said in Random crash during setup(ui), retranslante step:
Sorry for that. I think think is better :)

1   RaiseFailFastException                                                           0x7ffae7ae0c0f 
2   qt_message_fatal                             qlogging.cpp                   1892 0x6b78f454     
3   QMessageLogger::fatal                        qlogging.cpp                   887  0x6b78fe2b     
4   qt_assert_x                                  qglobal.cpp                    3209 0x6b78afc5     
5   QVector<QString>::operator[]                 qvector.h                      437  0x9a56d8       
6   CatalogueSerrure::loadModel                  catalogueSerrure.cpp           532  0x6cf88f       
7   CatalogueSerrure::qt_static_metacall         moc_catalogueSerrure.cpp       133  0x7abf05       
8   QMetaObject::activate                        qobject.cpp                    3795 0x6b9412a8     
9   QMetaObject::activate                        qobject.cpp                    3648 0x6b9415c6     
10  QItemSelectionModel::currentChanged          moc_qitemselectionmodel.cpp    465  0x6b8f0bd2     
11  QItemSelectionModel::setCurrentIndex         qitemselectionmodel.cpp        1414 0x6b8f0e2d     
12  QAbstractItemView::setCurrentIndex           qabstractitemview.cpp          1087 0x2b1eeed8     
13  CatalogueSerrure::lectureBDD                 catalogueSerrure.cpp           481  0x6cefd4       
14  CatalogueSerrure::refresh                    catalogueSerrure.cpp           604  0x6d02bb       
15  CatalogueSerrure::qt_static_metacall         moc_catalogueSerrure.cpp       135  0x7abf27       
16  QMetaCallEvent::placeMetaCall                qobject.cpp                    520  0x6b93d42d     
17  QObject::event                               qobject.cpp                    1260 0x6b941a72     
18  QWidget::event                               qwidget.cpp                    9388 0x2affb2b6     
19  QApplicationPrivate::notify_helper           qapplication.cpp               3736 0x2afb818e     
20  QApplication::notify                         qapplication.cpp               3687 0x2afc0ee0     
21  QCoreApplication::notifyInternal2            qcoreapplication.cpp           1060 0x6b917768     
22  QCoreApplication::sendEvent                  qcoreapplication.cpp           1450 0x6b917990     
23  QCoreApplicationPrivate::sendPostedEvents    qcoreapplication.cpp           1799 0x6b91cf73     
24  QEventDispatcherWin32::sendPostedEvents      qeventdispatcher_win.cpp       1092 0x6b9691b3     
25  QWindowsGuiEventDispatcher::sendPostedEvents qwindowsguieventdispatcher.cpp 81   0x39e36f30     
26  qt_internal_proc                             qeventdispatcher_win.cpp       245  0x6b96c219     
27  USER32!CallWindowProcW                                                           0x7ffae8b95c1d 
28  USER32!DispatchMessageW                                                          0x7ffae8b95612 
29  QEventDispatcherWin32::processEvents         qeventdispatcher_win.cpp       639  0x6b96b98d     
30  QWindowsGuiEventDispatcher::processEvents    qwindowsguieventdispatcher.cpp 74   0x39e36f17     
31  QCoreApplication::processEvents              qcoreapplication.cpp           1279 0x6b91785e     
32  CatalogueSerrure::loadModel                  catalogueSerrure.cpp           548  0x6cf9f1       
33  CatalogueSerrure::qt_static_metacall         moc_catalogueSerrure.cpp       133  0x7abf05       
34  QMetaObject::activate                        qobject.cpp                    3795 0x6b9412a8     
35  QMetaObject::activate                        qobject.cpp                    3648 0x6b9415c6     
36  QItemSelectionModel::currentChanged          moc_qitemselectionmodel.cpp    465  0x6b8f0bd2     
37  QItemSelectionModel::setCurrentIndex         qitemselectionmodel.cpp        1414 0x6b8f0e2d     
38  QAbstractItemView::setCurrentIndex           qabstractitemview.cpp          1087 0x2b1eeed8     
39  CatalogueSerrure::lectureBDD                 catalogueSerrure.cpp           481  0x6cefd4       
40  CatalogueSerrure::refresh                    catalogueSerrure.cpp           604  0x6d02bb       
41  CatalogueSerrure::qt_static_metacall         moc_catalogueSerrure.cpp       135  0x7abf27       
42  QMetaCallEvent::placeMetaCall                qobject.cpp                    520  0x6b93d42d     
43  QObject::event                               qobject.cpp                    1260 0x6b941a72     
44  QWidget::event                               qwidget.cpp                    9388 0x2affb2b6     
45  QApplicationPrivate::notify_helper           qapplication.cpp               3736 0x2afb818e     
46  QApplication::notify                         qapplication.cpp               3687 0x2afc0ee0     
47  QCoreApplication::notifyInternal2            qcoreapplication.cpp           1060 0x6b917768     
48  QCoreApplication::sendEvent                  qcoreapplication.cpp           1450 0x6b917990     
49  QCoreApplicationPrivate::sendPostedEvents    qcoreapplication.cpp           1799 0x6b91cf73     
50  QEventDispatcherWin32::sendPostedEvents      qeventdispatcher_win.cpp       1092 0x6b9691b3     
51  QWindowsGuiEventDispatcher::sendPostedEvents qwindowsguieventdispatcher.cpp 81   0x39e36f30     
52  qt_internal_proc                             qeventdispatcher_win.cpp       245  0x6b96c219     
53  USER32!CallWindowProcW                                                           0x7ffae8b95c1d 
54  USER32!DispatchMessageW                                                          0x7ffae8b95612 
55  QEventDispatcherWin32::processEvents         qeventdispatcher_win.cpp       639  0x6b96b98d     
56  QWindowsGuiEventDispatcher::processEvents    qwindowsguieventdispatcher.cpp 74   0x39e36f17     
57  QCoreApplication::processEvents              qcoreapplication.cpp           1279 0x6b91785e     
58  CatalogueSerrure::loadModel                  catalogueSerrure.cpp           548  0x6cf9f1       
59  CatalogueSerrure::qt_static_metacall         moc_catalogueSerrure.cpp       133  0x7abf05       
60  QMetaObject::activate                        qobject.cpp                    3795 0x6b9412a8     
61  QMetaObject::activate                        qobject.cpp                    3648 0x6b9415c6     
62  QItemSelectionModel::currentChanged          moc_qitemselectionmodel.cpp    465  0x6b8f0bd2     
63  QItemSelectionModel::setCurrentIndex         qitemselectionmodel.cpp        1414 0x6b8f0e2d     
64  QAbstractItemView::setCurrentIndex           qabstractitemview.cpp          1087 0x2b1eeed8     
65  CatalogueSerrure::lectureBDD                 catalogueSerrure.cpp           481  0x6cefd4       
66  CatalogueSerrure::refresh                    catalogueSerrure.cpp           604  0x6d02bb       
67  CatalogueSerrure::qt_static_metacall         moc_catalogueSerrure.cpp       135  0x7abf27       
68  QMetaCallEvent::placeMetaCall                qobject.cpp                    520  0x6b93d42d     
69  QObject::event                               qobject.cpp                    1260 0x6b941a72     
70  QWidget::event                               qwidget.cpp                    9388 0x2affb2b6     
71  QApplicationPrivate::notify_helper           qapplication.cpp               3736 0x2afb818e     
72  QApplication::notify                         qapplication.cpp               3687 0x2afc0ee0     
73  QCoreApplication::notifyInternal2            qcoreapplication.cpp           1060 0x6b917768     
74  QCoreApplication::sendEvent                  qcoreapplication.cpp           1450 0x6b917990     
75  QCoreApplicationPrivate::sendPostedEvents    qcoreapplication.cpp           1799 0x6b91cf73     
76  QEventDispatcherWin32::sendPostedEvents      qeventdispatcher_win.cpp       1092 0x6b9691b3     
77  QWindowsGuiEventDispatcher::sendPostedEvents qwindowsguieventdispatcher.cpp 81   0x39e36f30     
78  qt_internal_proc                             qeventdispatcher_win.cpp       245  0x6b96c219     
79  USER32!CallWindowProcW                                                           0x7ffae8b95c1d 
80  USER32!DispatchMessageW                                                          0x7ffae8b95612 
81  QEventDispatcherWin32::processEvents         qeventdispatcher_win.cpp       639  0x6b96b98d     
82  QWindowsGuiEventDispatcher::processEvents    qwindowsguieventdispatcher.cpp 74   0x39e36f17     
83  QCoreApplication::processEvents              qcoreapplication.cpp           1279 0x6b91785e     
84  CatalogueSerrure::loadModel                  catalogueSerrure.cpp           548  0x6cf9f1       
85  CatalogueSerrure::refresh                    catalogueSerrure.cpp           611  0x6d03e7       
86  CatalogueSerrure::qt_static_metacall         moc_catalogueSerrure.cpp       135  0x7abf27       
87  QMetaCallEvent::placeMetaCall                qobject.cpp                    520  0x6b93d42d     
88  QObject::event                               qobject.cpp                    1260 0x6b941a72     
89  QWidget::event                               qwidget.cpp                    9388 0x2affb2b6     
90  QApplicationPrivate::notify_helper           qapplication.cpp               3736 0x2afb818e     
91  QApplication::notify                         qapplication.cpp               3687 0x2afc0ee0     
92  QCoreApplication::notifyInternal2            qcoreapplication.cpp           1060 0x6b917768     
93  QCoreApplication::sendEvent                  qcoreapplication.cpp           1450 0x6b917990     
94  QCoreApplicationPrivate::sendPostedEvents    qcoreapplication.cpp           1799 0x6b91cf73     
95  QEventDispatcherWin32::sendPostedEvents      qeventdispatcher_win.cpp       1092 0x6b9691b3     
96  QWindowsGuiEventDispatcher::sendPostedEvents qwindowsguieventdispatcher.cpp 81   0x39e36f30     
97  qt_internal_proc                             qeventdispatcher_win.cpp       245  0x6b96c219     
98  USER32!CallWindowProcW                                                           0x7ffae8b95c1d 
99  USER32!DispatchMessageW                                                          0x7ffae8b95612 
100 QEventDispatcherWin32::processEvents         qeventdispatcher_win.cpp       639  0x6b96b98d     
101 QWindowsGuiEventDispatcher::processEvents    qwindowsguieventdispatcher.cpp 74   0x39e36f17     
102 QEventLoop::processEvents                    qeventloop.cpp                 138  0x6b915e27     
103 QEventLoop::exec                             qeventloop.cpp                 225  0x6b916245     
104 QCoreApplication::exec                       qcoreapplication.cpp           1363 0x6b91ee1a     
105 QGuiApplication::exec                        qguiapplication.cpp            1779 0x132423bf     
106 QApplication::exec                           qapplication.cpp               2893 0x2afb8070     
107 qMain                                        main.cpp                       117  0x4027c9       
108 WinMain                                      qtmain_win.cpp                 97   0x7b796a       
109 __tmainCRTStartup                                                                0x4013c7       
110 WinMainCRTStartup                                                                0x4014cb       

[jsulm]

@Match0um said in Random crash during setup(ui), retranslante step:

CatalogueSerrure::loadModel

Can you show the code in this method? It looks like you're out of bounds when accessing a QVector.

[Match0um]

Well I am accessing a vector on line 532 through a query. Errors should be handled right after with the if..else.. ? :(

I hid some names by xx.

The weird thing is that my menu is CatalogueSerrure and it is when creating an UI from this menu that the app crash. So I was focused on the created UI, not the parent :(

void CatalogueSerrure::loadModel(QModelIndex idx)
{
     if (idx.row()<0)
    {
        _lastIdxTable=0;
        idx = _modelItemCylindre->index(_lastIdxTable, 0);
    }

    QApplication::setOverrideCursor(Qt::WaitCursor);
    clearGrid2();

    QSqlQuery q;
    q.exec(QString("SELECT * FROM xx WHERE xx='%1' ORDER BY xx").arg(_myVector[idx.row()]));  //L532

    if (q.lastError().type()==QSqlError::NoError)
    {
        while (q.next())
        {
            xx(q);
        }
    }
    else
    {
        qDebug("error q");
        return;
    }

[Christian Ehrlicher]

@Match0um said in Random crash during setup(ui), retranslante step:

myVector[idx.row()]

You really should check if you don't access out-of-bounds here...

[JonB]

@Match0um said in Random crash during setup(ui), retranslante step:

Errors should be handled right after with the if..else.. ? :(

Umm, no! If _myVector[idx.row()] is out of bounds, you get a crash on that line, as you can see.... C++ doesn't go ahead and execute the string (how could it?) and then let you know about an error later on :)

[Match0um]

@Christian-Ehrlicher
Thanks for the tip. To make sure I wasn't, I replaced my arg by a fixed value. Behavior is the same :(

Furthermore, my code is executed a bit further and this line given my debug messages.

[Christian Ehrlicher]

@Match0um said in Random crash during setup(ui), retranslante step:

I replaced my arg by a fixed value. Behavior is the same :(

I never told you to do so. As @JonB and I suggested you should check if the index you pass to operator[] is out-of-bounds - i.e. if the vector is big enough. For sure it isn't.

[Match0um]

@Christian-Ehrlicher said in Random crash during setup(ui), retranslante step:

suggested you should check if the index you pass to operator[] is out-of-bounds

OK. By replacing

arg(_myVector[idx.row()]))

by

arg(cst)

the index and the vector are not used anymore ? No more out-of-bounds possibility, right ? But the problem subsists.

[Christian Ehrlicher]

@Match0um said in Random crash during setup(ui), retranslante step:

But the problem subsists.

No, the crash must be on another place now since you now no longer call the function which crashes according your old backtrace. Take a look at the backtrace.

[Match0um]

OK so now backtrace is leading me back to qaccessiblewidget...

1  RaiseFailFastException                                                                  0x7ffae7ae0c0f 
2  qt_message_fatal                                    qlogging.cpp                   1892 0x6b78f454     
3  QMessageLogger::fatal                               qlogging.cpp                   887  0x6b78fe2b     
4  qt_assert                                           qglobal.cpp                    3201 0x6b78acd1     
5  QAccessibleWidget::window                           qaccessiblewidget.cpp          228  0x2a8f982f     
6  QWindowsUiAutomation::hwndForAccessible             qwindowsuiautils.cpp           89   0x39e43667     
7  QWindowsUiaMainProvider::get_HostRawElementProvider qwindowsuiamainprovider.cpp    434  0x39e38689     
8  UiaHostProviderFromHwnd                                                                 0x7ffac16af003 
9  UiaHostProviderFromHwnd                                                                 0x7ffac16b07d3 
10 UiaHostProviderFromHwnd                                                                 0x7ffac16aec5a 
11 UiaRaiseAutomationEvent                                                                 0x7ffac16ad744 
12 UiaRaiseAutomationEvent                                                                 0x7ffac16ad3fc 
13 QWindowsUiaWrapper::raiseAutomationEvent            qwindowsuiawrapper.cpp         113  0x39eef364     
14 QWindowsUiaMainProvider::notifyTextChange           qwindowsuiamainprovider.cpp    171  0x39e375ba     
15 QWindowsUiaAccessibility::notifyAccessibilityUpdate qwindowsuiaaccessibility.cpp   123  0x39e36aa9     
16 QAccessible::updateAccessibility                    qaccessible.cpp                875  0xf43569c      
17 QWidgetLineControl::emitCursorPositionChanged       qwidgetlinecontrol.cpp         1436 0x2a8150e0     
18 QWidgetLineControl::finishChange                    qwidgetlinecontrol.cpp         749  0x2a816cb5     
19 QWidgetLineControl::internalSetText                 qwidgetlinecontrol.cpp         776  0x2a8170f1     
20 QWidgetLineControl::setText                         qwidgetlinecontrol_p.h         255  0x2a80be8a     
21 QLineEdit::setText                                  qlineedit.cpp                  318  0x2a80be8a     
22 QAbstractSpinBoxPrivate::updateEdit                 qabstractspinbox.cpp           1813 0x2a862ff3     
23 QDoubleSpinBox::setSuffix                           qspinbox.cpp                   764  0x2a865106     
24 Ui_FicheSerrure::retranslateUi                      ui_ficheSerrure.h              3098 0x821094       
25 Ui_FicheSerrure::setupUi                            ui_ficheSerrure.h              3039 0x843a45       
26 FicheSerrure::nouvelle_ConfigGUI                    ficheSerrure.cpp               194  0x71278c       
27 FicheSerrure::initialisations                       ficheSerrure.cpp               86   0x711d9c       
28 FicheSerrure::FicheSerrure                          ficheSerrure.cpp               27   0x71198d       
29 CatalogueSerrure::loadView                          catalogueSerrure.cpp           583  0x6d0033       
30 CatalogueSerrure::qt_static_metacall                moc_catalogueSerrure.cpp       134  0x7ac196       
31 QMetaObject::activate                               qobject.cpp                    3795 0x6b9412a8     
32 QMetaObject::activate                               qobject.cpp                    3648 0x6b9415c6     
33 QAbstractButton::clicked                            moc_qabstractbutton.cpp        312  0x2a7c0ee7     
34 ToolButton::event                                   structure.cpp                  1325 0x426ef8       
35 QApplicationPrivate::notify_helper                  qapplication.cpp               3736 0x2a6d818e     
36 QApplication::notify                                qapplication.cpp               3197 0x2a6df418     
37 QCoreApplication::notifyInternal2                   qcoreapplication.cpp           1060 0x6b917768     
38 QCoreApplication::sendSpontaneousEvent              qcoreapplication.cpp           1462 0x6b9179ae     
39 QApplicationPrivate::sendMouseEvent                 qapplication.cpp               2683 0x2a6de7bc     
40 QWidgetWindow::handleMouseEvent                     qwidgetwindow.cpp              662  0x2a72fbe2     
41 QWidgetWindow::event                                qwidgetwindow.cpp              281  0x2a73206b     
42 QApplicationPrivate::notify_helper                  qapplication.cpp               3736 0x2a6d818e     
43 QApplication::notify                                qapplication.cpp               3093 0x2a6df139     
44 QCoreApplication::notifyInternal2                   qcoreapplication.cpp           1060 0x6b917768     
45 QCoreApplication::sendSpontaneousEvent              qcoreapplication.cpp           1462 0x6b9179ae     
46 QGuiApplicationPrivate::processMouseEvent           qguiapplication.cpp            2102 0xf45b3e9      
47 QGuiApplicationPrivate::processWindowSystemEvent    qguiapplication.cpp            1837 0xf45c85e      
48 QWindowSystemInterface::sendWindowSystemEvents      qwindowsysteminterface.cpp     1151 0xf440503      
49 QWindowsGuiEventDispatcher::sendPostedEvents        qwindowsguieventdispatcher.cpp 82   0x39e46f39     
50 qt_internal_proc                                    qeventdispatcher_win.cpp       245  0x6b96c219     
51 USER32!CallWindowProcW                                                                  0x7ffae8b95c1d 
52 USER32!DispatchMessageW                                                                 0x7ffae8b95612 
53 QEventDispatcherWin32::processEvents                qeventdispatcher_win.cpp       639  0x6b96b98d     
54 QWindowsGuiEventDispatcher::processEvents           qwindowsguieventdispatcher.cpp 74   0x39e46f17     
55 QEventLoop::processEvents                           qeventloop.cpp                 138  0x6b915e27     
56 QEventLoop::exec                                    qeventloop.cpp                 225  0x6b916245     
57 QCoreApplication::exec                              qcoreapplication.cpp           1363 0x6b91ee1a     
58 QGuiApplication::exec                               qguiapplication.cpp            1779 0xf4523bf      
59 QApplication::exec                                  qapplication.cpp               2893 0x2a6d8070     
60 qMain                                               main.cpp                       117  0x4027c9       
61 WinMain                                             qtmain_win.cpp                 97   0x7b7bfa       
62 __tmainCRTStartup                                                                       0x4013c7       
63 WinMainCRTStartup                                                                       0x4014cb       

[jsulm]

@Match0um said in Random crash during setup(ui), retranslante step:

FicheSerrure::nouvelle_ConfigGUI

What exactly happens in this method (code)?

[Match0um]

@jsulm
Here is the code. And as far as I understand, during the first operation, setupUi(this) get into Retranslate and then crash...

void FicheSerrure::nouvelle_ConfigGUI()
{
    //Configuration de l'interface utilisateur
    ui->setupUi(this);
    ConfigGUI::configView(this);
    this->setWindowTitle("Fiche Serrure");

    ui->stackedWidget_photo->setCurrentIndex(0);

    ui->tabWidget_pageCle->clear();
    ui->tabWidget_pageGoupille->clear();

    ui->widget->addButton(ui->toolB_editer, 0, 0);
...
    ui->widget->addButton(ui->toolB_sauverPage, 0, 8);


    WidgetStacked* widgetStacked = new WidgetStacked(ui->page_visible);

    ui->gridLayout_pageVisible->addWidget(widgetStacked);

    widgetStacked->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    widgetStacked->addWidget(ui->page_axe1);
    widgetStacked->addWidget(ui->page_axe2);
    widgetStacked->setCurrentIndex(0);

    ui->tabWidget->tabBar()->installEventFilter(this);
}

[jsulm]

@Match0um There is an assert in
QAccessibleWidget::window qaccessiblewidget.cpp 228 0x2a8f982f
What exact Qt version do you use? Knowing the exact version we could check what happens in qaccessiblewidget.cpp at line 228, else it is hard to say.
OK, it is this:

QWindow *QAccessibleWidget::window() const
{
    const QWidget *w = widget();
    Q_ASSERT(w); // This is the assert, means widget() returns nullptr
    QWindow *result = w->windowHandle();
    if (!result) {
        if (const QWidget *nativeParent = w->nativeParentWidget())
            result = nativeParent->windowHandle();
    }
    return result;
}

QWidget *QAccessibleWidget::widget() const
{
    return qobject_cast<QWidget*>(object());
}

QObject *QAccessibleObject::object() const
{
    return d->object;
}

Looks like either d->object is not set (unlikely as it is set in constructor) or it is not QWidget. Could be a bug in Qt, you can check Qt bug tracker.

[Christian Ehrlicher]

@Match0um said in Random crash during setup(ui), retranslante step:

ui->setupUi(this);

This is wrong - it creates new widgets every time this function is called!
setupUi() must only be called once in the ctor.

/edit:

WidgetStacked* widgetStacked = new WidgetStacked(ui->page_visible);

This is also wrong since you don't delete the old.

[jsulm]

@Christian-Ehrlicher Oh, didn't notice it wasn't constructor!

[Match0um]

@Christian-Ehrlicher said in Random crash during setup(ui), retranslante step:

setupUi() must only be called once in the ctor.

Sorry if it was not clear.
nouvelle_ConfigGUI() is called only once by my constructor. So not more than 1 call for setup(ui). (I double checked)

Agreed on widget Stacked, so I temporarly took it out of the code, but issue remains.

I work on QT 5.12.3, I tried 5.12.9 but no improvements neither :(

[Christian Ehrlicher]

Simplify the ui of the form until it no longer crashes. I would start by not setting the suffix for the spinbox as this is the current way how it crashes as you can see in the backtrace.