From 713009771027d0d2c494d74e83063a19023ef8b2 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Sat, 19 Feb 2022 17:23:36 +0100
Subject: [PATCH] Prevent crash when no simulation has been run and asking for
 plotting an event node

---
 src/xspice/evt/evtplot.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/xspice/evt/evtplot.c b/src/xspice/evt/evtplot.c
index 33cb232e9..7b1106f5f 100644
--- a/src/xspice/evt/evtplot.c
+++ b/src/xspice/evt/evtplot.c
@@ -152,6 +152,12 @@ struct dvec *EVTfindvec(
   /* Get the UDN type index */
   udn_index = node_table[i]->udn_index;
 
+  if (!g_mif_info.ckt->evt->data.node) {
+//    fprintf(stderr, "Warning: No event data available! \n   Simulation not yet run?\n");
+    tfree(name);
+    return(NULL);
+  }
+
   /* Count the number of events */
   head = g_mif_info.ckt->evt->data.node->head[i];