diff --git a/sh.h b/sh.h
index 88efbf7..9c0dc3e 100644
--- a/sh.h
+++ b/sh.h
@@ -8,7 +8,7 @@
 /*	$OpenBSD: c_test.h,v 1.4 2004/12/20 11:34:26 otto Exp $	*/
 /*	$OpenBSD: tty.h,v 1.5 2004/12/20 11:34:26 otto Exp $	*/
 
-#define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.173 2007/08/19 23:12:22 tg Exp $"
+#define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.174 2007/08/20 14:06:10 tg Exp $"
 #define MKSH_VERSION "R31 2007/08/19"
 
 #if HAVE_SYS_PARAM_H
@@ -192,6 +192,8 @@ typedef int bool;
 
 #if !HAVE_ARC4RANDOM_DECL
 extern u_int32_t arc4random(void);
+extern void arc4random_addrandom(unsigned char *, int)
+    __bound_att__((bounded (string, 1, 2)));
 #endif
 
 #if !HAVE_ARC4RANDOM_PUSHB_DECL