From 1155a4725b541ac41139dd67eab5d2b53dfe7522 Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lorenz@px4.io>
Date: Sat, 14 Jan 2017 13:39:02 +0100
Subject: [PATCH] PX4IO: Fix mixer load corner case in string termination

---
 src/modules/px4iofirmware/mixer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/modules/px4iofirmware/mixer.cpp b/src/modules/px4iofirmware/mixer.cpp
index 4372ff8848..2633205f0c 100644
--- a/src/modules/px4iofirmware/mixer.cpp
+++ b/src/modules/px4iofirmware/mixer.cpp
@@ -533,6 +533,8 @@ mixer_handle_text(const void *buffer, size_t length)
 			/* copy any leftover text to the base of the buffer for re-use */
 			if (resid > 0) {
 				memcpy(&mixer_text[0], &mixer_text[mixer_text_length - resid], resid);
+				/* enforce null termination */
+				mixer_text[resid] = '\0';
 			}
 
 			mixer_text_length = resid;