From 9d542b92b02b9cb79e74646badc9fc53c5f99492 Mon Sep 17 00:00:00 2001
From: Tim Edwards <tim@opencircuitdesign.com>
Date: Thu, 30 Jul 2020 08:06:44 -0400
Subject: [PATCH] Corrected one logical error in netcmp.c from the last commit,
 discovered and fixed by Ahmed Ghazy.

---
 base/netcmp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/base/netcmp.c b/base/netcmp.c
index 977035d..9063451 100644
--- a/base/netcmp.c
+++ b/base/netcmp.c
@@ -5882,7 +5882,7 @@ int ResolveAutomorphisms()
       /* convergence, and repeat.				*/
 
       E1 = E2 = EC->elements;
-      while (E1 != NULL) {
+      while (E1 != NULL && E2 != NULL) {
           while (E1->graph != Circuit1->file) E1 = E1->next;
           while (E2->graph != Circuit2->file) E2 = E2->next;
 	  Magic(newhash);
@@ -5919,7 +5919,7 @@ int ResolveAutomorphisms()
       /* convergence, and repeat.				*/
 
       N1 = N2 = NC->nodes;
-      while (N1 != NULL) {
+      while (N1 != NULL && N2 != NULL) {
           while (N1->graph != Circuit1->file) N1 = N1->next;
           while (N2->graph != Circuit2->file) N2 = N2->next;
 	  Magic(newhash);