From bbe81ca8f86a8648aa698c2b95fafcd4ba98b73f Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Tue, 5 May 2020 12:00:19 +0200
Subject: [PATCH] shared ngspice may transmit netlists with empty lines, guard
 against crashing

---
 src/frontend/inpcom.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index b703e7416..10ebf976f 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -7691,6 +7691,10 @@ static struct card *pspice_compat(struct card *oldcard)
 
         if (*cut_line == '*')
             continue;
+
+        if (*cut_line == '\0')
+            continue;
+
         /* exclude any command inside .control ... .endc */
         if (ciprefix(".control", cut_line)) {
             skip_control++;