From 5b1e756298145bb1f38f71deb29872cbd9d2e77e Mon Sep 17 00:00:00 2001
From: mpi <mpi@openbsd.org>
Date: Sun, 30 Apr 2017 10:11:03 +0000
Subject: [PATCH] Check that unsupported operation returns ENOSYS.

---
 regress/sys/kern/futex/futex.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/regress/sys/kern/futex/futex.c b/regress/sys/kern/futex/futex.c
index 643aa05cbdb..f60f9362067 100644
--- a/regress/sys/kern/futex/futex.c
+++ b/regress/sys/kern/futex/futex.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: futex.c,v 1.1 2017/04/30 09:03:58 mpi Exp $ */
+/*	$OpenBSD: futex.c,v 1.2 2017/04/30 10:11:03 mpi Exp $ */
 /*
  * Copyright (c) 2017 Martin Pieuchot
  *
@@ -40,6 +40,9 @@ main(int argc, char *argv[])
 	struct timespec abs = { 0, 5000 };
 	pthread_t thread;
 
+	/* Invalid operation */
+	assert(futex(&lock, 0xFFFF, 0, 0, NULL) == ENOSYS);
+
 	/* Incorrect pointer */
 	assert(futex_twait((void *)0xdeadbeef, 1, 0, NULL) == EFAULT);
 
-- 
2.20.1