From 994b23abf6fed97e7a23833d97ebf4e3a02b4be4 Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@klayout.de>
Date: Sun, 26 May 2024 17:23:50 +0200
Subject: [PATCH] Refining solution of issue #1719, part 2

---
 src/db/db/dbHierNetworkProcessor.cc | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/db/db/dbHierNetworkProcessor.cc b/src/db/db/dbHierNetworkProcessor.cc
index 4c5c089ea..7f2acce95 100644
--- a/src/db/db/dbHierNetworkProcessor.cc
+++ b/src/db/db/dbHierNetworkProcessor.cc
@@ -2817,6 +2817,18 @@ private:
   std::map<size_t, entry_list::iterator> m_global_net_to_entries;
 };
 
+template <class T>
+struct is_for_nets
+{
+  static bool value () { return false; }
+};
+
+template <>
+struct is_for_nets<db::NetShape>
+{
+  static bool value () { return true; }
+};
+
 }
 
 template <class T>
@@ -2909,7 +2921,8 @@ hier_clusters<T>::build_hier_connections (cell_clusters_box_converter<T> &cbc, c
   //  join local clusters which got connected by child clusters
   rec->finish_cluster_to_instance_interactions ();
 
-  {
+  if (is_for_nets<T>::value ()) {
+
     //  remove empty or point-like clusters which do not make a downward connection - i.e. from stray texts.
     //  This implies, we cannot connect from upward down to such nets too. In other words: to force a pin,
     //  inside a cell we need more than a text.
@@ -2927,6 +2940,7 @@ hier_clusters<T>::build_hier_connections (cell_clusters_box_converter<T> &cbc, c
     if (tl::verbosity () >= m_base_verbosity + 20) {
       tl::info << "Removed " << to_delete.size () << " clusters because they are point-like or empty and do not have connections downward (stray texts)";
     }
+
   }
 
   if (tl::verbosity () >= m_base_verbosity + 20) {