From 7f30055f2243467d8bb4e1e93005a8c121be610b Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Sun, 10 Dec 2023 18:01:07 +0100
Subject: [PATCH] Prevent crash if port number is less than 1.

---
 src/spicelib/devices/vsrc/vsrctemp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/spicelib/devices/vsrc/vsrctemp.c b/src/spicelib/devices/vsrc/vsrctemp.c
index 413e356e9..359e0bdc6 100644
--- a/src/spicelib/devices/vsrc/vsrctemp.c
+++ b/src/spicelib/devices/vsrc/vsrctemp.c
@@ -76,7 +76,7 @@ VSRCtemp(GENmodel *inModel, CKTcircuit *ckt)
                 if (!here->VSRCportZ0Given)
                     here->VSRCportZ0 = 50.0;
 
-                here->VSRCisPort = here->VSRCportZ0 > 0.0;
+                here->VSRCisPort = here->VSRCportZ0 > 0.0 && here->VSRCportNum > 0;
             }
             else
                 here->VSRCisPort = FALSE;