From fd502efffb999039ff07edee80780d6f6c3e09bf Mon Sep 17 00:00:00 2001
From: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
Date: Wed, 28 Aug 2024 17:46:27 +0200
Subject: [PATCH] router: ensure rebuildJoint() does not leave dangling root
 node (with incorrect links) joint in case the (overridden) joint has same
 hash value but different linked items. Probably the oldest bug in P&S, I
 can't stop wondering how it had worked reasonably well for so many years :D

---
 pcbnew/router/pns_node.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pcbnew/router/pns_node.cpp b/pcbnew/router/pns_node.cpp
index 7b14c37f18..c57fc14b82 100644
--- a/pcbnew/router/pns_node.cpp
+++ b/pcbnew/router/pns_node.cpp
@@ -817,6 +817,8 @@ void NODE::rebuildJoint( const JOINT* aJoint, const ITEM* aItem )
     {
         if( link != aItem )
             linkJoint( tag.pos, link->Layers(), net, link );
+        else
+            unlinkJoint( tag.pos, link->Layers(), net, link );
     }
 }