Index: trunk/src/obj_subc.c
===================================================================
--- trunk/src/obj_subc.c	(revision 14105)
+++ trunk/src/obj_subc.c	(revision 14106)
@@ -1611,3 +1611,8 @@
 	PCB_END_LOOP;
 	return NULL;
 }
+
+pcb_bool pcb_subc_is_empty(pcb_subc_t *subc)
+{
+	return pcb_data_is_empty(subc->data);
+}
Index: trunk/src/obj_subc.h
===================================================================
--- trunk/src/obj_subc.h	(revision 14105)
+++ trunk/src/obj_subc.h	(revision 14106)
@@ -110,6 +110,9 @@
    layer that matches brd_layer or brd_layer if not found. */
 pcb_layer_t *pcb_loose_subc_layer(pcb_board_t *pcb, pcb_layer_t *brd_layer);
 
+/* Returns whether there's no object in the subc */
+pcb_bool pcb_subc_is_empty(pcb_subc_t *subc);
+
 /*** subc creation helpers ***/
 
 /* Create the aux layer for a subc, set origin to ox;oy and rotation to rot */