--- libgo/go/syscall/syscall.go.orig	2020-03-04 19:30:03.000000000 +1100
+++ libgo/go/syscall/syscall.go	2020-09-08 16:06:27.264642000 +1000
@@ -8,7 +8,7 @@
 // system. If you want godoc to display syscall documentation for another
 // system, set $GOOS and $GOARCH to the desired system. For example, if
 // you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
-// to freebsd and $GOARCH to arm.
+// to freebsd, bsdsunix and $GOARCH to arm.
 // The primary use of syscall is inside other packages that provide a more
 // portable interface to the system, such as "os", "time" and "net".  Use
 // those packages rather than this one if you can.