? model-patch.txt
Index: gtk/gtktreemodel.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtktreemodel.c,v
retrieving revision 1.115
diff -p -u -r1.115 gtktreemodel.c
--- gtk/gtktreemodel.c	20 Mar 2005 07:01:23 -0000	1.115
+++ gtk/gtktreemodel.c	13 Apr 2005 14:49:31 -0000
@@ -1068,11 +1068,14 @@ gboolean
 gtk_tree_model_iter_next (GtkTreeModel  *tree_model,
 			  GtkTreeIter   *iter)
 {
+  gboolean (*iter_next) (GtkTreeModel *, GtkTreeIter *);
   g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
   g_return_val_if_fail (iter != NULL, FALSE);
-  g_return_val_if_fail (GTK_TREE_MODEL_GET_IFACE (tree_model)->iter_next != NULL, FALSE);
 
-  return (* GTK_TREE_MODEL_GET_IFACE (tree_model)->iter_next) (tree_model, iter);
+  iter_next = GTK_TREE_MODEL_GET_IFACE (tree_model)->iter_next;
+  g_return_val_if_fail (iter_next != NULL, FALSE);
+
+  return (*iter_next) (tree_model, iter);
 }
 
 /**