From ff08df0eed7c6c6d76f451fd1edf1ab780751fa5 Mon Sep 17 00:00:00 2001
From: Tim Edwards <tim@opencircuitdesign.com>
Date: Tue, 5 Oct 2021 13:25:39 -0400
Subject: [PATCH] Fix to new ext2spice code to prevent a crash condition when
 multiple instances of a port name are present.

---
 ext2spice/ext2spice.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ext2spice/ext2spice.c b/ext2spice/ext2spice.c
index 57e97c5b..b7dd1fce 100644
--- a/ext2spice/ext2spice.c
+++ b/ext2spice/ext2spice.c
@@ -1821,7 +1821,8 @@ topVisit(def, doStub)
 	    {
 		hep = HashFind(&portNameTable, pname);
 		HashSetValue(hep, (ClientData)(pointertype)nodeName->efnn_port);
-		sorted_ports[portidx] = StrDup((char **)NULL, pname);
+		if (sorted_ports[portidx] == NULL)
+		    sorted_ports[portidx] = StrDup((char **)NULL, pname);
 	    }
 	    else
 	    {