--- libgo/go/os/wait_wait6.go.orig	2020-03-04 19:30:03.000000000 +1100
+++ libgo/go/os/wait_wait6.go	2020-09-21 19:04:45.118802000 +1000
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build freebsd
+// +build freebsd bsdsunix
 
 package os