--- libgo/go/archive/tar/stat_actime2.go.orig	2020-03-04 19:30:03.000000000 +1100
+++ libgo/go/archive/tar/stat_actime2.go	2020-09-08 00:17:52.106434000 +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 darwin freebsd netbsd
+// +build bsdsunix darwin freebsd netbsd
 
 package tar