--- src/lib/libast/comp/omitted.c.orig	2018-12-04 17:28:01.000000000 -0800
+++ src/lib/libast/comp/omitted.c	2018-12-04 17:28:13.000000000 -0800
@@ -1091,7 +1091,7 @@
  * own bsd-like macros
  */
 
-#if !_lib_bzero || defined(bzero)
+#if !_lib_bzero
 
 #undef	bzero