Index: obj_pstk_proto.c
===================================================================
--- obj_pstk_proto.c	(revision 32747)
+++ obj_pstk_proto.c	(revision 32748)
@@ -72,6 +72,7 @@
 	dst->mech_idx = -1;
 
 	if (ts != NULL) {
+		/* find and cache the index of the mech shape (slot) */
 		for(n = 0; n < ts->len; n++) {
 			if (ts->shape[n].layer_mask & PCB_LYT_MECH) {
 				dst->mech_idx = n;
@@ -78,6 +79,10 @@
 				break;
 			}
 		}
+
+		/* mark each copper shape with whether it overlaps with the hole/mech shape or not */
+		for(n = 0; n < ts->len; n++) {
+		}
 	}
 }