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Details

Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 5.8.0
Affects Version/s: 5.0.0, 5.6.0
Component/s: Widgets: Itemviews
Labels:
None
Environment:
Qt: Qt 5.0.0 MSVC2010 32bit
OS: Windows 7

Description

Minimal code: (It can be compiled as-is)

    #include <QtGui>
    int main(int argc, char *argv[])
    {
    QApplication app(argc, argv);
    QTreeView myView;
    QFileSystemModel * sourceModel = new QFileSystemModel(&myView);
    QSortFilterProxyModel * proxy1 = new QSortFilterProxyModel(&myView);
    QIdentityProxyModel * proxy2 = new QIdentityProxyModel(&myView);
     
    sourceModel->setRootPath("C:/");
     
    proxy1->setSourceModel(sourceModel);
    proxy2->setSourceModel(proxy1);
     
    myView.setModel(proxy2);
    myView.show();
    return app.exec();
    }

After clicking quickly in the tree view a few times to expand folders in order to stress the software, the application crashes and give a read access violation error.

Note: There is no problem if the proxies are chained the other way around or if they are used alone.

Attachments

Issue Links

is duplicated by

QTBUG-44143 QIdentityProxyModel does not properly handle/propagate 'layoutAboutToBeChanged' signal from the source model.

Closed

QTBUG-54412 QComboBox loses selected item when several proxies are chained

Closed

relates to

QTBUG-47711 QSortFilterProxyModel policy on invalidating QModelndexes isn't consistent, can lead to crashes

Reported

QTBUG-44611 QItemSelectionProxyModel crashes due to not updating its persistent indexes

Closed

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For Gerrit Dashboard: QTBUG-32981
#	Subject	Branch	Project	Status	CR	V
174503,2	Update the selection model's persistent indexes when the layout changes	5.6	qt/qtbase	Status: ABANDONED	-2	0
180249,5	QSFPM: Fix handling of source model layout change	5.8	qt/qtbase	Status: MERGED	+2	0
180390,4	QIPM: Persist model indexes after emitting layoutChange, not before	5.8	qt/qtbase	Status: MERGED	+2	0