From 7cd8d829644700410ced4971d97d32e520453710 Mon Sep 17 00:00:00 2001
From: Tim Edwards <tim@opencircuitdesign.com>
Date: Mon, 24 Oct 2022 21:45:14 -0400
Subject: [PATCH] Fix for an error causing a segfault.  This does not fix the
 underlying issue (which needs to be investigated), but it does prevent netgen
 from crashing when it encounters it (netgen will generate an erro message
 instead).

---
 VERSION       | 2 +-
 base/netcmp.c | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/VERSION b/VERSION
index 7e4aaed..476edb5 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.234
+1.5.235
diff --git a/base/netcmp.c b/base/netcmp.c
index fa2ae92..76eecb9 100644
--- a/base/netcmp.c
+++ b/base/netcmp.c
@@ -5005,6 +5005,11 @@ int PropertyOptimize(struct objlist *ob, struct nlist *tp, int run, int series,
 		  // find ith record in ob
 		  p = 0;
 		  for (ob2 = ob; p != i; ob2 = ob2->next, p++);
+		  /* Sanity check */
+		  if (ob2->type != PROPERTY) {
+    		     Fprintf(stderr, "Incorrect property run count!\n");
+		     continue;
+		  }
 		  // Count entries, add one, reallocate
 		  for (p = 0;; p++) {
 		     vl = &ob2->instance.props[p];