Bug in QListWidget::row

I often need to check if QListWidgetItem* exists in the QListWidget. The current method I can use is QListWidget::row. But if the Item has already been destroyed, the pointer passing into the row will cause the program to crash.

QListWidget::row(QTreeWidgetItem*) → QListModel::index(QTreeWidgetItem*)

Obviously, the current row function does not take into account that the item has been destroyed.

The red part of the screenshot can be modified：
if(!item||items.isEmpty||!items.contains(item))return QModelIndex();

Because when the item is no longer in the Widget, it often means that it may have been deleted, so you can avoid the crash of the item->view.

Provided a Qt6.6-based Demo，Program crashes don't have to happen, but they do have a certain probability.