On Sun, 2003-08-17 at 23:33, Vadim Berezniker wrote:
> wilfried kopp wrote:
> > Hi everybody,
> >
> > I am stuck with a segmentation fault caused by a treeview and I have pent hours trying to figure out what's wrong with no success.
> >
> >
> > Here is how I create the model (I simplified the code... but this version crashes as well...)
> > while (item)
> > {
> > gtk_list_store_append (store, &iter);
> > gtk_list_store_set (store, &iter,
> > MIME_TYPES_TO_SKIP_COLUMN_STATE, 0 ,
> > MIME_TYPES_TO_SKIP_COLUMN_MIME_TYPE, test,
> > -1);
> >
> > item=g_list_next(item);
> > }
> >
>
> That looks OK.
>
> > The segmentation fault happens when I remove an item with this code:
> > gtk_tree_model_get (model,&iter,
> > 0, &state,
> > 1, &mime_type,
> > -1);
> >
>
> Why are you using constants such as (MIME_TYPES_TO_SKIP_COLUMN_STATE and
> MIME_TYPES_TO_SKIP_COLUMN_MIME_TYPE) in the code that adds data but
> referencing them by number here. This could lead to problems if the
> constants change later.
>
> > if (gtk_tree_selection_get_selected (listSelection, NULL, &iter))
> > {
> > gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
> > }
> >
> >
> > Here is what ddd says:
> > (gtktalog:5396): Gtk-CRITICAL **: file ../../gtk/gtkliststore.c: line 566 (gtk_list_store_get_value): assertion `GTK_LIST_STORE (tree_model)->stamp == iter->stamp' failed
> >
>
> The error seems to indicate that you modified the model after retrieving
> the iterator, which invalidates the iterator.
To avoid this, use a GtkTreeRowReference to recalculate a valid
iterator.
>
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>
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