===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/arguments.c,v
retrieving revision 1.53
retrieving revision 1.54
diff -u -r1.53 -r1.54
--- src/usr.bin/tmux/arguments.c	2022/03/03 08:24:12	1.53
+++ src/usr.bin/tmux/arguments.c	2022/05/30 13:04:24	1.54
@@ -1,4 +1,4 @@
-/* $OpenBSD: arguments.c,v 1.53 2022/03/03 08:24:12 nicm Exp $ */
+/* $OpenBSD: arguments.c,v 1.54 2022/05/30 13:04:24 nicm Exp $ */
 
 /*
  * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -831,6 +831,12 @@
 		return (0);
 	}
 	value = TAILQ_LAST(&entry->values, args_values);
+	if (value == NULL ||
+	    value->type != ARGS_STRING ||
+	    value->string == NULL) {
+		*cause = xstrdup("missing");
+		return (0);
+	}
 
 	ll = strtonum(value->string, minval, maxval, &errstr);
 	if (errstr != NULL) {