From e11717ab3b8d0022372aac49389f125ffc8a8ca7 Mon Sep 17 00:00:00 2001
From: FRIGN <dev@frign.de>
Date: Wed, 11 Mar 2015 13:31:08 +0100
Subject: [PATCH] Print usage() when -l and -s are both given in cmp(1)

This is unspecified behaviour, not undefined by POSIX. So we
break out here.
---
 cmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmp.c b/cmp.c
index 1e48c52..685dd26 100644
--- a/cmp.c
+++ b/cmp.c
@@ -28,7 +28,7 @@ main(int argc, char *argv[])
 		usage();
 	} ARGEND;
 
-	if (argc != 2)
+	if (argc != 2 || (lflag && sflag))
 		usage();
 
 	for (n = 0; n < 2; n++) {