[regression] Can't set a cursor on both QApplication and widget level before widget is shown

int main( int argc, char ** argv )
{
    QApplication app(argc, argv);
    app.setOverrideCursor(QCursor(Qt::SizeBDiagCursor));
    QLabel w1;
    w1.setGeometry(300,300,400,400);
    //w1.setCursor(QCursor(Qt::SizeBDiagCursor));
    w1.setText("Test widget");
    w1.show();

    return app.exec();
}