cellChanged signal generated by QTableWidget::takeItem() always has row and column set to -1

• 1. Create a QTableWidget instance.
  2. Create an item at, say, coordinates column 5, row 3.
  3. Hook up a slot to cellChanged signal of the table widget.
  3. Call takeItem() with the same coordinates.

Expected: the slot gets invoked with row = 3, column = 5
Actual: it does get invoked, but row and column are set to -1

Per my understanding here is why (from qtablewidget.cpp):

QTableWidgetItem *QTableModel::takeItem(int row, int column)
{
    long i = tableIndex(row, column);
    QTableWidgetItem *itm = tableItems.value(i);
    if (itm) {
        itm->view = 0;
        itm->d->id = -1;
        tableItems[i] = 0;
        QModelIndex ind = index(itm);
        emit dataChanged(ind, ind);
    }
    return itm;
}

Note that itm is taken from tableItems vector, then both are modified to essentially forget about each other, and then ind = index(itm) looks back into tableItems vector to find the item, naturally doesn't find anything and returns QModelIndex(), i.e. a default constructor, and sends that to the dataChanged signal.