From 48b51907fa88434428cd11fb0b10ce6748c97afc Mon Sep 17 00:00:00 2001
From: Giles Atkinson <“gatk555@gmail.com”>
Date: Thu, 24 Nov 2022 17:30:25 +0000
Subject: [PATCH] Prevent crash when cm_analog_set_temp_bkpt() is called during
 OPtran().

---
 src/xspice/cm/cm.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/xspice/cm/cm.c b/src/xspice/cm/cm.c
index 0b9626bd6..61ba08819 100644
--- a/src/xspice/cm/cm.c
+++ b/src/xspice/cm/cm.c
@@ -430,10 +430,12 @@ int cm_analog_set_temp_bkpt(
     }
 
     /* If too close to a permanent breakpoint or the current time, discard it */
-    if( (fabs(time - ckt->CKTbreaks[0]) < ckt->CKTminBreak) ||
-        (fabs(time - ckt->CKTbreaks[1]) < ckt->CKTminBreak) ||
-        (fabs(time - ckt->CKTtime) < ckt->CKTminBreak) )
+    if ((ckt->CKTbreaks &&
+         (fabs(time - ckt->CKTbreaks[0]) < ckt->CKTminBreak ||
+          fabs(time - ckt->CKTbreaks[1]) < ckt->CKTminBreak)) ||
+        fabs(time - ckt->CKTtime) < ckt->CKTminBreak) {
         return(MIF_OK);
+    }
 
     /* If < current dynamic breakpoint, make it the current breakpoint */
     if( time < g_mif_info.breakpoint.current)