Crash floating QDockWidget with Qt::WA_StaticContents on delete

 
    inline void QWidgetBackingStore::updateStaticContentsSize()
    {
        for (int i = 0; i < staticWidgets.size(); ++i) {
            QWidgetPrivate *wd = staticWidgets.at(i)->d_func();
>           if (!wd->extra)
                wd->createExtra();
            wd->extra->staticContentsSize = wd->data.crect.size();
        }
    }

 
class MainWindow: public QMainWindow
{
Q_OBJECT
public:
    MainWindow(){
        QDockWidget *dock=new QDockWidget(this);
        {
            view=new QWidget(dock);
            view->setAttribute(Qt::WA_StaticContents,true);
            dock->setWidget(view);
        }
        dock->setFloating(true);
    }
public slots:
    void bug()
    {
        QMessageBox::information(this,"Don't doit!","Ok");
        delete view;
    }
protected:
    QWidget *view;
};

#include "main.moc"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    MainWindow *w=new MainWindow();
    w->show();
    w->bug();

    return a.exec();
}