Index: head/net/tcpview/files/patch-hex.c
===================================================================
--- head/net/tcpview/files/patch-hex.c	(revision 510752)
+++ head/net/tcpview/files/patch-hex.c	(revision 510753)
@@ -1,10 +1,10 @@
 --- hex.c.orig	1993-04-22 13:40:04.000000000 -0700
 +++ hex.c	2017-10-06 07:25:01.182767000 -0700
 @@ -85,6 +85,7 @@
    char *s;
  
    do {
-+#define gets(a) fgets(a,sizeof(a),stdin)
++#define gets(a) gets_s(a,sizeof(a))
      if( gets(str) == NULL )
        return NULL;
      if( *str != '\t' && *str != ' ' && PrintFrames )