From ea8c6e9fc81fb4a5bf44e6c2d5a3506b52e530e1 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 30 Mar 2017 05:06:34 +0200
Subject: Fix hiding  Lua __metatable -- prevent setmetatable() override

---
 libs/ardour/globals.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'libs/ardour/globals.cc')

diff --git a/libs/ardour/globals.cc b/libs/ardour/globals.cc
index bd96bfa242..ded1637012 100644
--- a/libs/ardour/globals.cc
+++ b/libs/ardour/globals.cc
@@ -84,6 +84,8 @@
 #include "midi++/port.h"
 #include "midi++/mmc.h"
 
+#include "LuaBridge/LuaBridge.h"
+
 #include "ardour/analyser.h"
 #include "ardour/audio_library.h"
 #include "ardour/audio_backend.h"
@@ -423,6 +425,12 @@ ARDOUR::init (bool use_windows_vst, bool try_optimization, const char* localedir
 		return true;
 	}
 
+#ifndef NDEBUG
+	if (getenv("LUA_METATABLES")) {
+		luabridge::Security::setHideMetatables (false);
+	}
+#endif
+
 	if (!PBD::init()) return false;
 
 #ifdef ENABLE_NLS
-- 
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