From e9a4a74e7b77a378cdce4008f61f99e95f80a6e0 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Tue, 7 Jul 2020 13:15:14 +1000
Subject: [PATCH] AP_Scripting: suppress cast-align warnings in Lua interpreter

this is externally maintained code that makes heavy use of casting
---
 libraries/AP_Scripting/lua/src/ldebug.c | 3 ++-
 libraries/AP_Scripting/lua/src/ldo.c    | 3 ++-
 libraries/AP_Scripting/lua/src/llex.c   | 2 ++
 libraries/AP_Scripting/lua/src/lstate.c | 3 +++
 libraries/AP_Scripting/lua/src/ltm.c    | 2 ++
 5 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/libraries/AP_Scripting/lua/src/ldebug.c b/libraries/AP_Scripting/lua/src/ldebug.c
index e1389296e9..1de6b0df0f 100644
--- a/libraries/AP_Scripting/lua/src/ldebug.c
+++ b/libraries/AP_Scripting/lua/src/ldebug.c
@@ -29,7 +29,8 @@
 #include "ltm.h"
 #include "lvm.h"
 
-
+// lua code does lots of casting, these warnings are not helpful
+#pragma GCC diagnostic ignored "-Wcast-align"
 
 #define noLuaClosure(f)		((f) == NULL || (f)->c.tt == LUA_TCCL)
 
diff --git a/libraries/AP_Scripting/lua/src/ldo.c b/libraries/AP_Scripting/lua/src/ldo.c
index 316e45c8fe..951a5b5223 100644
--- a/libraries/AP_Scripting/lua/src/ldo.c
+++ b/libraries/AP_Scripting/lua/src/ldo.c
@@ -33,7 +33,8 @@
 #include "lvm.h"
 #include "lzio.h"
 
-
+// lua code does lots of casting, these warnings are not helpful
+#pragma GCC diagnostic ignored "-Wcast-align"
 
 #define errorstatus(s)	((s) > LUA_YIELD)
 
diff --git a/libraries/AP_Scripting/lua/src/llex.c b/libraries/AP_Scripting/lua/src/llex.c
index 66fd411ba9..afc6f41709 100644
--- a/libraries/AP_Scripting/lua/src/llex.c
+++ b/libraries/AP_Scripting/lua/src/llex.c
@@ -27,6 +27,8 @@
 #include "ltable.h"
 #include "lzio.h"
 
+// lua code does lots of casting, these warnings are not helpful
+#pragma GCC diagnostic ignored "-Wcast-align"
 
 
 #define next(ls) (ls->current = zgetc(ls->z))
diff --git a/libraries/AP_Scripting/lua/src/lstate.c b/libraries/AP_Scripting/lua/src/lstate.c
index c1a76643c3..25580bff24 100644
--- a/libraries/AP_Scripting/lua/src/lstate.c
+++ b/libraries/AP_Scripting/lua/src/lstate.c
@@ -27,6 +27,9 @@
 #include "ltable.h"
 #include "ltm.h"
 
+// lua code does lots of casting, these warnings are not helpful
+#pragma GCC diagnostic ignored "-Wcast-align"
+
 
 #if !defined(LUAI_GCPAUSE)
 #define LUAI_GCPAUSE	200  /* 200% */
diff --git a/libraries/AP_Scripting/lua/src/ltm.c b/libraries/AP_Scripting/lua/src/ltm.c
index 0e7c713214..6e7a95a0b3 100644
--- a/libraries/AP_Scripting/lua/src/ltm.c
+++ b/libraries/AP_Scripting/lua/src/ltm.c
@@ -23,6 +23,8 @@
 #include "ltm.h"
 #include "lvm.h"
 
+// lua code does lots of casting, these warnings are not helpful
+#pragma GCC diagnostic ignored "-Wcast-align"
 
 static const char udatatypename[] = "userdata";