if (p == PSPPIRE_DATA_EDITOR_DATA_VIEW)
{
SswRange *range = SSW_SHEET(de->data_sheet)->selection;
+ g_return_if_fail (range->start_y >= 0);
psppire_data_store_delete_cases (de->data_store, range->start_y,
range->end_y - range->start_y + 1);
gtk_widget_queue_draw (GTK_WIDGET (de->data_sheet));