From ee2163ce69fcde7ec6deff5492783f1f9f1b1731 Mon Sep 17 00:00:00 2001
From: Roman <bapstroman@gmail.com>
Date: Thu, 1 Mar 2018 16:37:42 +0100
Subject: [PATCH] vtol_att_control: prevent segfault when no command line args
 given

Signed-off-by: Roman <bapstroman@gmail.com>
---
 src/modules/vtol_att_control/vtol_att_control_main.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/modules/vtol_att_control/vtol_att_control_main.cpp b/src/modules/vtol_att_control/vtol_att_control_main.cpp
index 3588905900..f0d734c6e7 100644
--- a/src/modules/vtol_att_control/vtol_att_control_main.cpp
+++ b/src/modules/vtol_att_control/vtol_att_control_main.cpp
@@ -767,6 +767,7 @@ int vtol_att_control_main(int argc, char *argv[])
 {
 	if (argc < 2) {
 		PX4_WARN("usage: vtol_att_control {start|stop|status}");
+		return 1;
 	}
 
 	if (!strcmp(argv[1], "start")) {