diff --git a/src/db/db/dbCompoundOperation.h b/src/db/db/dbCompoundOperation.h
index fcb34e85d..04905c5e0 100644
--- a/src/db/db/dbCompoundOperation.h
+++ b/src/db/db/dbCompoundOperation.h
@@ -333,6 +333,11 @@ public:
 
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Polygon> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const;
+
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
 };
 
 class DB_PUBLIC CompoundRegionOperationForeignNode
@@ -364,6 +369,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Polygon> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   db::Region *mp_input;
 };
@@ -497,6 +508,12 @@ public:
     implement_compute_local (layout, interactions, results, max_vertex_count, area_ratio);
   }
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   LogicalOp m_op;
   bool m_invert;
@@ -591,6 +608,9 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
 private:
   GeometricalOp m_op;
 
@@ -696,6 +716,11 @@ public:
     implement_compute_local (layout, interactions, results, max_vertex_count, area_ratio);
   }
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
 private:
   db::interacting_local_operation<db::Polygon, db::Polygon, db::Polygon> m_op;
 };
@@ -741,6 +766,11 @@ public:
     implement_compute_local (layout, interactions, results, max_vertex_count, area_ratio);
   }
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
 private:
   db::pull_local_operation<db::Polygon, db::Polygon, db::Polygon> m_op;
 };
@@ -894,6 +924,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Polygon> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
   virtual const TransformationReducer *vars () const { return mp_filter->vars (); }
   virtual bool wants_variants () const { return mp_filter->wants_variants (); }
 
@@ -937,6 +973,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Polygon> > & /*results*/,     size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::PolygonRef> > & /*results*/,  size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
   virtual const TransformationReducer *vars () const { return mp_filter->vars (); }
   virtual bool wants_variants () const { return mp_filter->wants_variants (); }
 
@@ -980,6 +1022,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::EdgePair> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::EdgePair> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Polygon> > & /*results*/,     size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::PolygonRef> > & /*results*/,  size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
   virtual const TransformationReducer *vars () const { return mp_filter->vars (); }
   virtual bool wants_variants () const { return mp_filter->wants_variants (); }
 
@@ -1023,6 +1071,11 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Polygon> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
 private:
   PolygonProcessorBase *mp_proc;
   bool m_owns_proc;
@@ -1097,6 +1150,12 @@ public:
     implement_compute_local (layout, interactions, results, max_vertex_count, area_ratio);
   }
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   bool m_min_coherence;
   unsigned int m_min_wc;
@@ -1149,6 +1208,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Polygon> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   EdgeToPolygonProcessorBase *mp_proc;
   bool m_owns_proc;
@@ -1189,6 +1254,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Polygon> > & /*results*/,     size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::PolygonRef> > & /*results*/,  size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   EdgeProcessorBase *mp_proc;
   bool m_owns_proc;
@@ -1228,6 +1299,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Polygon> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   EdgePairToPolygonProcessorBase *mp_proc;
   bool m_owns_proc;
@@ -1268,6 +1345,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Polygon> > & /*results*/,     size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::PolygonRef> > & /*results*/,  size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   EdgePairToEdgeProcessorBase *mp_proc;
   bool m_owns_proc;
@@ -1305,6 +1388,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::Edge> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Polygon> > & /*results*/,     size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::PolygonRef> > & /*results*/,  size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::EdgePair> > & /*results*/,    size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   PolygonToEdgeProcessorBase *mp_proc;
   bool m_owns_proc;
@@ -1355,6 +1444,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::EdgePair> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::EdgePair> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Polygon> > & /*results*/,     size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::PolygonRef> > & /*results*/,  size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
  PolygonToEdgePairProcessorBase *mp_proc;
   bool m_owns_proc;
@@ -1413,6 +1508,12 @@ public:
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::Polygon, db::Polygon> &interactions, std::vector<std::unordered_set<db::EdgePair> > &results, size_t max_vertex_count, double area_ratio) const;
   virtual void do_compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::EdgePair> > &results, size_t max_vertex_count, double area_ratio) const;
 
+  //  non-implemented
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Polygon> > & /*results*/,     size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::Polygon, db::Polygon> & /*interactions*/,       std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::PolygonRef> > & /*results*/,  size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+  virtual void do_compute_local (db::Layout * /*layout*/, const shape_interactions<db::PolygonRef, db::PolygonRef> & /*interactions*/, std::vector<std::unordered_set<db::Edge> > & /*results*/,        size_t /*max_vertex_count*/, double /*area_ratio*/) const { }
+
 private:
   db::EdgeRelationFilter m_check;
   bool m_different_polygons;
diff --git a/testdata/drc/compound_au14.gds b/testdata/drc/compound_au14.gds
index 3565b5ef4..e74b38e18 100644
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diff --git a/testdata/drc/compound_au14d.gds b/testdata/drc/compound_au14d.gds
index 4b7886e44..35f97ebed 100644
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diff --git a/testdata/drc/compound_au3.gds b/testdata/drc/compound_au3.gds
index 993003e29..b445ce38a 100644
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diff --git a/testdata/drc/compound_au3d.gds b/testdata/drc/compound_au3d.gds
index 3da708f41..98ee3c6d6 100644
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