From e5e5e1735b60e43aa4c0a5e861ea3f472a23304c Mon Sep 17 00:00:00 2001
From: squeek <squeek502@hotmail.com>
Date: Tue, 24 Mar 2015 12:34:20 -0700
Subject: [PATCH] Don't crash if class_info() is called on non-luabind objects 
 * See
 https://github.com/luabind/luabind/commit/2c6c9054e3f9ae00498fc2b56331a17b590ab74e

---
 maps/includes/base.lua | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/maps/includes/base.lua b/maps/includes/base.lua
index d77275d..317e74a 100644
--- a/maps/includes/base.lua
+++ b/maps/includes/base.lua
@@ -48,6 +48,20 @@ function baseclass:new (o)
 end
 
 
+-----------------------------------------------------------------------------
+-- make luabind's class_info function safer
+-- (don't crash if class_info() is called on non-luabind objects)
+-----------------------------------------------------------------------------
+local class_info_base = class_info
+class_info = function(obj)
+	local obj_type = type(obj)
+	if obj_type == "userdata" and getmetatable(obj).__luabind_class then
+		return class_info_base(obj)
+	end
+	return {}
+end
+
+
 -----------------------------------------------------------------------------
 -- reset everything
 -----------------------------------------------------------------------------