From 33a3557910e83515615aa4f1d721ccd044635722 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Fri, 3 Feb 2023 11:44:57 +0100
Subject: [PATCH] Safeguard against NULL pointers

---
 src/frontend/inpc_probe.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/frontend/inpc_probe.c b/src/frontend/inpc_probe.c
index 42f6622a1..112b1208d 100644
--- a/src/frontend/inpc_probe.c
+++ b/src/frontend/inpc_probe.c
@@ -1030,10 +1030,17 @@ static char *get_terminal_name(char* element, char *numberstr, NGHASHPTR instanc
         for (i = 0; i <= numnodes; i++)
             thisline = nexttok(thisline);
         subcktname = gettok(&thisline);
+
         /*Search for the corresponding .subckt line*/
         struct card_assoc* allsubs = xcard->level->subckts;
+
         while (allsubs) {
             xcardsubsline = allsubs->line->line;
+            /* safeguard against NULL pointers) */
+            if (!subcktname || !allsubs->name) {
+                tfree(subcktname);
+                return tprintf("n%s", numberstr);
+            }
             if (cieq(subcktname, allsubs->name))
                 break;
             allsubs = allsubs->next;