Use the slice allocator for many small allocations.

[~andy/gtk] / gtk / gtktreesortable.c

diff --git a/gtk/gtktreesortable.c b/gtk/gtktreesortable.c
index d72ef22b530cf31af5c4a5f4fefc496cfff7ed7f..4961e903af10f2bc5a2ce1aa26d0ecee841b48ea 100644 (file)
--- a/gtk/gtktreesortable.c
+++ b/gtk/gtktreesortable.c
@@ -170,6 +170,7 @@ gtk_tree_sortable_set_sort_func (GtkTreeSortable        *sortable,
   GtkTreeSortableIface *iface;
 
   g_return_if_fail (GTK_IS_TREE_SORTABLE (sortable));
+  g_return_if_fail (sort_func != NULL);
 
   iface = GTK_TREE_SORTABLE_GET_IFACE (sortable);