From b668b02a1f04413b740fa4982ae43f9f297c70e2 Mon Sep 17 00:00:00 2001
From: "R. Timothy Edwards" <tim@opencircuitdesign.com>
Date: Mon, 20 Oct 2025 11:03:03 -0400
Subject: [PATCH] Corrected a problem in which "cellname delete" never cleared
 the cell name from the cell name hash table.  So when "cellname rename" was
 changed recently to prevent changing the name of a cell that already exists,
 the suggested recipe for R-C extraction no longer works:  "load x; flatten y;
 load y; cellname delete x; cellname rename y x".  Solved by adding a
 HashRemove() function to the cell deletion routine.  Thanks to Egor
 Lukyachenko for reporting the issue (Github issue tracker #467).

---
 VERSION               | 2 +-
 database/DBcellname.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/VERSION b/VERSION
index 4c8517f7..be108053 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.3.564
+8.3.565
diff --git a/database/DBcellname.c b/database/DBcellname.c
index 2ba464e4..1d3d478c 100644
--- a/database/DBcellname.c
+++ b/database/DBcellname.c
@@ -1944,6 +1944,7 @@ DBCellDeleteDef(cellDef)
     entry = HashFind(&dbCellDefTable, cellDef->cd_name);
     ASSERT(HashGetValue(entry) == (ClientData) cellDef, "DBCellDeleteDef");
     HashSetValue(entry, (ClientData) NULL);
+    HashRemove(&dbCellDefTable, cellDef->cd_name);
     if (cellDef->cd_props)
 	DBPropClearAll(cellDef);