Index: obj_pstk_op.c
===================================================================
--- obj_pstk_op.c	(revision 37943)
+++ obj_pstk_op.c	(revision 37944)
@@ -62,7 +62,7 @@
 	PCB_FLAG_CLEAR(PCB_FLAG_WARN | PCB_FLAG_FOUND, ps);
 
 	if (!ctx->buffer.dst->padstack_tree)
-		ctx->buffer.dst->padstack_tree = rnd_r_create_tree();
+		rnd_rtree_init(ctx->buffer.dst->padstack_tree = malloc(sizeof(rnd_rtree_t)));
 
 	rnd_rtree_insert(ctx->buffer.dst->padstack_tree, ps, (rnd_rtree_box_t *)ps);
 	pcb_poly_clear_from_poly(ctx->buffer.dst, PCB_OBJ_PSTK, NULL, ps);