From 026b74e25d3cceec35a5e32d85d393911cad6013 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 21 Aug 2019 03:51:23 +0200
Subject: [PATCH] Fix potential call of uninitialized pointer function

_template_number can be set via sysex to an arbitrary number, this
can lead to calling a filter-function at an undefined address, usually
a segfault.
---
 libs/surfaces/launch_control_xl/launch_control_xl.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libs/surfaces/launch_control_xl/launch_control_xl.cc b/libs/surfaces/launch_control_xl/launch_control_xl.cc
index 20dd73f8b2..4eb379a639 100644
--- a/libs/surfaces/launch_control_xl/launch_control_xl.cc
+++ b/libs/surfaces/launch_control_xl/launch_control_xl.cc
@@ -1002,6 +1002,8 @@ LaunchControlXL::filter_stripables(StripableList& strips) const
 	FilterFunction flt;
 
 	switch ((int)template_number()) {
+		default:
+			/* FALLTHROUGH */
 		case 8:
 			flt = &flt_default;
 			break;