From af116d238fc99d68ac8d301d64f486a5ae93b53e Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Wed, 25 May 2016 11:13:42 +1000
Subject: [PATCH] AP_GPS: use zero length flexible arrays

this works with gcc-6.1 and also works with asan. Hopefully it will
make coverity happy too.
---
 libraries/AP_GPS/AP_GPS_ERB.h   | 2 +-
 libraries/AP_GPS/AP_GPS_MTK.h   | 2 +-
 libraries/AP_GPS/AP_GPS_MTK19.h | 2 +-
 libraries/AP_GPS/AP_GPS_SIRF.h  | 2 +-
 libraries/AP_GPS/AP_GPS_UBLOX.h | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/libraries/AP_GPS/AP_GPS_ERB.h b/libraries/AP_GPS/AP_GPS_ERB.h
index 5c0c3fc825..c7d8868c62 100644
--- a/libraries/AP_GPS/AP_GPS_ERB.h
+++ b/libraries/AP_GPS/AP_GPS_ERB.h
@@ -90,7 +90,7 @@ private:
         erb_stat stat;
         erb_dops dops;
         erb_vel vel;
-        uint8_t bytes[1];
+        uint8_t bytes[0];
     } _buffer;
 
     enum erb_protocol_bytes {
diff --git a/libraries/AP_GPS/AP_GPS_MTK.h b/libraries/AP_GPS/AP_GPS_MTK.h
index fa2188f125..71cedd4303 100644
--- a/libraries/AP_GPS/AP_GPS_MTK.h
+++ b/libraries/AP_GPS/AP_GPS_MTK.h
@@ -72,7 +72,7 @@ private:
     // Receive buffer
     union PACKED {
         diyd_mtk_msg msg;
-        uint8_t bytes[1];
+        uint8_t bytes[0];
     } _buffer;
 
     // Buffer parse & GPS state update
diff --git a/libraries/AP_GPS/AP_GPS_MTK19.h b/libraries/AP_GPS/AP_GPS_MTK19.h
index 054a94c491..b6e5c49653 100644
--- a/libraries/AP_GPS/AP_GPS_MTK19.h
+++ b/libraries/AP_GPS/AP_GPS_MTK19.h
@@ -78,6 +78,6 @@ private:
     // Receive buffer
     union {
         diyd_mtk_msg msg;
-        uint8_t bytes[1];
+        uint8_t bytes[0];
     } _buffer;
 };
diff --git a/libraries/AP_GPS/AP_GPS_SIRF.h b/libraries/AP_GPS/AP_GPS_SIRF.h
index 8833c9ca7f..dfb7a43537 100644
--- a/libraries/AP_GPS/AP_GPS_SIRF.h
+++ b/libraries/AP_GPS/AP_GPS_SIRF.h
@@ -98,7 +98,7 @@ private:
     // Message buffer
     union {
         sirf_geonav nav;
-        uint8_t bytes[1];
+        uint8_t bytes[0];
     } _buffer;
 
     bool        _parse_gps(void);
diff --git a/libraries/AP_GPS/AP_GPS_UBLOX.h b/libraries/AP_GPS/AP_GPS_UBLOX.h
index c33316e9f1..5dce69d3d7 100644
--- a/libraries/AP_GPS/AP_GPS_UBLOX.h
+++ b/libraries/AP_GPS/AP_GPS_UBLOX.h
@@ -384,7 +384,7 @@ private:
         ubx_rxm_rawx rxm_rawx;
 #endif
         ubx_ack_ack ack;
-        uint8_t bytes[1];
+        uint8_t bytes[0];
     } _buffer;
 
     enum ubs_protocol_bytes {