I found this during https://github.com/DataDog/datadog-agent/pull/2079

Change-Id: I51d57e7e3cedb8b23e720bc03f38504dc0ad063d
GitHub-Last-Rev: 4e1c193db8bfc9174f630903bfc26e5532555309
GitHub-Pull-Request: golang/sys#13
Reviewed-on: https://go-review.googlesource.com/126620Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>