Gtk::TreeModel oddity

[Bob Caryl <bob fis-cal com>]

Hello all,

I have an application where I use a Gtk::ListStore in conjunction with a 
Gtk::TreeView to display representations of records in a database.  I 
have a function whereby the user can delete database records by clicking 
on one of those representations and pressing a button.  In the function 
connected to that button, I use the following code to remove the list 
store entry representing the deleted database record and to set the Tree 
View cursor:


Glib::RefPtr<Gtk::ListStore> list;                                // our 
listore object for the treeview
Glib::RefPtr<Gtk::TreeSelection> list_sel;                  // selection 
for the treeview

Gtk::TreeModel::Path *path = new 
Gtk::TreeModel::Path(list->erase(list_sel->get_selected()));  // obtain 
path to the row following the deleted row
  
if(path)   // if the path is valid set the view cursor to that path.
{
   tree->set_cursor(*path);
   delete path;
}


This code works (e.g. the row in the TreeView disappears and the cursor 
is repositioned on the following row), but I get several "Critical" 
messages:

(gmwadmin:2454): Gtk-CRITICAL **: gtk_list_store_get_value: assertion 
`GTK_LIST_STORE (tree_model)->stamp == iter->stamp' failed
(gmwadmin:2454): GLib-GObject-CRITICAL **: g_value_get_string: assertion 
`G_VALUE_HOLDS_STRING (value)' failed
(gmwadmin:2454): GLib-GObject-CRITICAL **: g_value_unset: assertion 
`G_IS_VALUE (value)' failed
(gmwadmin:2454): Gtk-CRITICAL **: gtk_list_store_get_path: assertion 
`iter->stamp == GTK_LIST_STORE (tree_model)->stamp' failed
(gmwadmin:2454): Gtk-CRITICAL **: gtk_tree_view_set_cursor_on_cell: 
assertion `path != NULL' failed

Using the de-bugger I have determined that the call to "list->erase" is 
generating these messages.    The messages tend to make me think that 
the iterator returned by the Gtk::TreeSelection::get_selected function 
is not the same type of iterator required by the Gtk::ListStore::erase 
function as its formal parameter.  However, the docs don't seem to make 
a distinction between the iterators they describe as return values and 
formal parameters (in other words, following the hyperlinks in the docs 
to the iterators go to the same page).  I *think* I have implemented the 
foregoing code properly based on the gtkmm docs, but maybe I have not... 
can someone please point out my error?

Best regards,
Bob Caryl