From 80cebdc23c29ed778958ba3a35662cbc5f5e2f09 Mon Sep 17 00:00:00 2001
From: HybridDog <ovvv@web.de>
Date: Tue, 28 Jun 2016 06:34:22 +0200
Subject: [PATCH] Only allow strings to be passed to minetest.global_exists
 (#4253)

Sometimes you accidentally forget the quotes when using global_exists, this makes minetest abort if you did so.

M  builtin/common/strict.lua
---
 builtin/common/strict.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/builtin/common/strict.lua b/builtin/common/strict.lua
index 05ceadf7a..23ba3d727 100644
--- a/builtin/common/strict.lua
+++ b/builtin/common/strict.lua
@@ -5,6 +5,9 @@ local WARN_INIT = false
 
 
 function core.global_exists(name)
+	if type(name) ~= "string" then
+		error("core.global_exists: " .. tostring(name) .. " is not a string")
+	end
 	return rawget(_G, name) ~= nil
 end