From 85d997620ea1bfb5d7ac186d3b54107f2b4c16ff Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Mon, 14 Feb 2022 22:04:29 -0500
Subject: [PATCH] elfctl: error if -e is specified multiple times

Reported by:	jrm
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation

(cherry picked from commit f0cf9b602dc0375dfc279500e0314b7c55273bf0)
---
 usr.bin/elfctl/elfctl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/usr.bin/elfctl/elfctl.c b/usr.bin/elfctl/elfctl.c
index 9463372f674..993349d4ec4 100644
--- a/usr.bin/elfctl/elfctl.c
+++ b/usr.bin/elfctl/elfctl.c
@@ -116,6 +116,8 @@ main(int argc, char **argv)
 			lflag = true;
 			break;
 		case 'e':
+			if (features != NULL)
+				errx(1, "-e may be specified only once");
 			features = optarg;
 			editfeatures = true;
 			break;