From d61682360ec6c8342f3fb1902751f32ac2103eb6 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Mon, 18 Jul 2022 23:23:55 +0200
Subject: [PATCH] Prevent crash when ca or d are not defined. May happen when
 .endc is missing.

---
 src/frontend/inpcom.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index 65fa1a9af..516ba5d40 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -3696,9 +3696,12 @@ static void inp_fix_inst_calls_for_numparam(
 
             if (find_name(subckt_w_params, subckt_name)) {
                 struct card *d;
-
-                d = find_subckt(c->level, subckt_name)->line;
-                {
+                struct card_assoc* ca = find_subckt(c->level, subckt_name);
+                if (ca)
+                    d = ca->line;
+                else
+                    continue;
+                if (d) {
                     char *subckt_line = d->line;
                     subckt_line = skip_non_ws(subckt_line);
                     subckt_line = skip_ws(subckt_line);