Index: external/mit/libICE/dist/src/iceauth.c
===================================================================
RCS file: /cvsroot/xsrc/external/mit/libICE/dist/src/iceauth.c,v
retrieving revision 1.1.1.3
diff -p -u -u -r1.1.1.3 iceauth.c
--- external/mit/libICE/dist/src/iceauth.c	21 Nov 2010 05:47:12 -0000	1.1.1.3
+++ external/mit/libICE/dist/src/iceauth.c	7 Mar 2017 07:06:46 -0000
@@ -36,6 +36,10 @@ Author: Ralph Mor, X Consortium
 #include <time.h>
 #define Time_t time_t
 
+#ifdef HAVE_LIBBSD
+#include <bsd/stdlib.h>	/* for arc4random_buf() */
+#endif
+
 static int was_called_state;
 
 /*
@@ -50,14 +54,19 @@ IceGenerateMagicCookie (
 )
 {
     char    *auth;
+#ifndef HAVE_ARC4RANDOM_BUF
     long    ldata[2];
     int	    seed;
     int	    value;
     int	    i;
+#endif
     
     if ((auth = (char *) malloc (len + 1)) == NULL)
 	return (NULL);
 
+#ifdef HAVE_ARC4RANDOM_BUF
+    arc4random_buf(auth, len);
+#else
 #ifdef ITIMER_REAL
     {
 	struct timeval  now;
@@ -81,8 +90,8 @@ IceGenerateMagicCookie (
 	value = rand ();
 	auth[i] = value & 0xff;
     }
+#endif
     auth[len] = '\0';
-
     return (auth);
 }
 
Index: xfree/xc/lib/ICE/iceauth.c
===================================================================
RCS file: /cvsroot/xsrc/xfree/xc/lib/ICE/Attic/iceauth.c,v
retrieving revision 1.1.1.5
diff -p -u -u -r1.1.1.5 iceauth.c
--- xfree/xc/lib/ICE/iceauth.c	28 Feb 2003 13:18:45 -0000	1.1.1.5
+++ xfree/xc/lib/ICE/iceauth.c	7 Mar 2017 07:06:46 -0000
@@ -37,6 +37,10 @@ Author: Ralph Mor, X Consortium
 
 static int binaryEqual ();
 
+#ifdef HAVE_LIBBSD
+#include <bsd/stdlib.h>	/* for arc4random_buf() */
+#endif
+
 static int was_called_state;
 
 /*
@@ -52,14 +56,19 @@ int len;
 
 {
     char    *auth;
+#ifndef HAVE_ARC4RANDOM_BUF
     long    ldata[2];
     int	    seed;
     int	    value;
     int	    i;
+#endif
     
     if ((auth = (char *) malloc (len + 1)) == NULL)
 	return (NULL);
 
+#ifdef HAVE_ARC4RANDOM_BUF
+    arc4random_buf(auth, len);
+#else
 #ifdef ITIMER_REAL
     {
 	struct timeval  now;
@@ -83,8 +92,8 @@ int len;
 	value = rand ();
 	auth[i] = value & 0xff;
     }
+#endif
     auth[len] = '\0';
-
     return (auth);
 }