From 453350bf2ff62832132cf3e858ac97d73a67e592 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Sun, 18 Sep 2022 11:11:56 +0200
Subject: [PATCH] safeguard against circuit not being abvailable, avoid crash

---
 src/xspice/evt/evtsetup.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/xspice/evt/evtsetup.c b/src/xspice/evt/evtsetup.c
index a0a3bd314..606c7959e 100644
--- a/src/xspice/evt/evtsetup.c
+++ b/src/xspice/evt/evtsetup.c
@@ -627,8 +627,11 @@ int EVTswitch_plot(CKTcircuit* ckt, const char* plottypename) {
     Evt_Job_t* jobs;
     Evt_Data_t* data;
 
+    if (!ckt)
+        return (E_NOTFOUND);
+
     if (ckt->evt->counts.num_insts == 0)
-        return(OK);
+        return(E_NOTFOUND);
 
     jobs = &(ckt->evt->jobs);
     data = &(ckt->evt->data);