===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/rev/rev.c,v
retrieving revision 1.15
retrieving revision 1.16
diff -u -r1.15 -r1.16
--- src/usr.bin/rev/rev.c	2022/01/29 00:11:54	1.15
+++ src/usr.bin/rev/rev.c	2022/02/08 17:44:18	1.16
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rev.c,v 1.15 2022/01/29 00:11:54 cheloha Exp $	*/
+/*	$OpenBSD: rev.c,v 1.16 2022/02/08 17:44:18 cheloha Exp $	*/
 /*	$NetBSD: rev.c,v 1.5 1995/09/28 08:49:40 tls Exp $	*/
 
 /*-
@@ -68,6 +68,9 @@
 
 	rval = 0;
 	if (argc == 0) {
+		if (pledge("stdio", NULL) == -1)
+			err(1, "pledge");
+
 		rval = rev_file(NULL);
 	} else {
 		for (; *argv != NULL; argv++)