From 758a7d72ec9527863b9df68e366172e6e98d0c47 Mon Sep 17 00:00:00 2001
From: Tim Edwards <tim@opencircuitdesign.com>
Date: Fri, 23 Jul 2021 10:39:59 -0400
Subject: [PATCH] Corrected a potential segfault issue in "extresist" if it
 encounters a port label that is not connected to a valid layer (e.g., space).

---
 VERSION         | 2 +-
 resis/ResMain.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/VERSION b/VERSION
index 0b00a6f6..7eb9f00a 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.3.188
+8.3.189
diff --git a/resis/ResMain.c b/resis/ResMain.c
index 78e32d29..bb661d6c 100644
--- a/resis/ResMain.c
+++ b/resis/ResMain.c
@@ -212,6 +212,12 @@ ResMakePortBreakpoints(def)
 	node=(ResSimNode *) HashGetValue(entry);
 	if (node->status & PORTNODE)
 	{
+	    if (node->rs_ttype <= 0)
+	    {
+		TxError("Warning:  Label \"%s\" is unconnected.\n", node->name);
+		continue;
+	    }
+
 	    plane = def->cd_planes[DBPlane(node->rs_ttype)];
 	    rect  = &(node->rs_bbox);