Index: obj_common.c
===================================================================
--- obj_common.c	(revision 5279)
+++ obj_common.c	(revision 5280)
@@ -38,7 +38,7 @@
 /* returns a pointer to an objects bounding box;
  * data is valid until the routine is called again
  */
-pcb_box_t *GetObjectBoundingBox(int Type, void *Ptr1, void *Ptr2, void *Ptr3)
+int GetObjectBoundingBox(int Type, void *Ptr1, void *Ptr2, void *Ptr3, pcb_box_t *res)
 {
 	switch (Type) {
 	case PCB_TYPE_LINE:
@@ -48,19 +48,22 @@
 	case PCB_TYPE_PAD:
 	case PCB_TYPE_PIN:
 	case PCB_TYPE_ELEMENT_NAME:
-		return (pcb_box_t *) Ptr2;
+		*res = *(pcb_box_t *)Ptr2;
+		return 0;
 	case PCB_TYPE_VIA:
 	case PCB_TYPE_ELEMENT:
-		return (pcb_box_t *) Ptr1;
+		*res = *(pcb_box_t *)Ptr1;
+		return 0;
 	case PCB_TYPE_POLYGON_POINT:
 	case PCB_TYPE_LINE_POINT:
-		return (pcb_box_t *) Ptr3;
+		*res = *(pcb_box_t *)Ptr3;
+		return 0;
 	case PCB_TYPE_ARC_POINT:
 /*		abort();*/
-		
 	default:
 		pcb_message(PCB_MSG_DEFAULT, "Request for bounding box of unsupported type %d\n", Type);
-		return (pcb_box_t *) Ptr2;
+		*res = *(pcb_box_t *)Ptr2;
+		return -1;
 	}
 }