From 74f8cd15bb43110973deffdeb9dd229797e5b328 Mon Sep 17 00:00:00 2001
From: "Kartik K. Agaram" <vc@akkartik.com>
Date: Tue, 19 Oct 2021 21:38:48 -0700
Subject: new fork of Lua 5.1

https://www.lua.org
---
 test/readonly.lua | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 test/readonly.lua

(limited to 'test/readonly.lua')

diff --git a/test/readonly.lua b/test/readonly.lua
new file mode 100644
index 0000000..85c0b4e
--- /dev/null
+++ b/test/readonly.lua
@@ -0,0 +1,12 @@
+-- make global variables readonly
+
+local f=function (t,i) error("cannot redefine global variable `"..i.."'",2) end
+local g={}
+local G=getfenv()
+setmetatable(g,{__index=G,__newindex=f})
+setfenv(1,g)
+
+-- an example
+rawset(g,"x",3)
+x=2
+y=1	-- cannot redefine `y'
-- 
cgit 1.4.1-2-gfad0