Index: trunk/src/polygon.c
===================================================================
--- trunk/src/polygon.c	(revision 12427)
+++ trunk/src/polygon.c	(revision 12428)
@@ -996,7 +996,7 @@
 
 /* Construct a poly area that represents the enlarged subpoly - so it can be
    subtracted from the parent poly to form the clearance for subpoly */
-static pcb_polyarea_t *SubtractPolyPoly_construct(pcb_poly_t *subpoly)
+pcb_polyarea_t *pcb_poly_clearance_construct(pcb_poly_t *subpoly)
 {
 	pcb_poly_it_t it;
 	pcb_polyarea_t *ret = NULL, *pa, *lin, *tmp;
@@ -1045,7 +1045,7 @@
 {
 	if (subpoly->thermal & PCB_THERMAL_ON)
 		return pcb_thermal_area_poly(pcb, subpoly, layernum);
-	return SubtractPolyPoly_construct(subpoly);
+	return pcb_poly_clearance_construct(subpoly);
 }
 
 
Index: trunk/src/polygon.h
===================================================================
--- trunk/src/polygon.h	(revision 12427)
+++ trunk/src/polygon.h	(revision 12428)
@@ -78,7 +78,9 @@
 pcb_polyarea_t *pcb_poly_from_arc(pcb_arc_t * l, pcb_coord_t thick);
 pcb_polyarea_t *pcb_poly_from_pin(pcb_pin_t * l, pcb_coord_t thick, pcb_coord_t clear);
 pcb_polyarea_t *pcb_poly_from_box_bloated(pcb_box_t * box, pcb_coord_t radius);
+pcb_polyarea_t *pcb_poly_clearance_construct(pcb_poly_t *subpoly); /* clearance shape for when clearpolypoly is set */
 
+
 void pcb_poly_frac_circle(pcb_pline_t *, pcb_coord_t, pcb_coord_t, pcb_vector_t, int);
 int pcb_poly_init_clip(pcb_data_t * d, pcb_layer_t * l, pcb_poly_t * p);
 void pcb_poly_restore_to_poly(pcb_data_t *, int, void *, void *);