--- libgo/go/os/sys_bsdsunix.go.orig	2020-03-04 19:30:03.000000000 +1100
+++ libgo/go/os/sys_bsdsunix.go	2020-09-22 00:09:36.524412000 +1000
@@ -0,0 +1,9 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package os
+
+// supportsCloseOnExec reports whether the platform supports the
+// O_CLOEXEC flag.
+const supportsCloseOnExec bool = true