From e44f3a2ffc7ced5e75cca7657aaa60ef27da89aa Mon Sep 17 00:00:00 2001
From: Roberto I <roberto@inf.puc-rio.br>
Date: Sat, 8 Nov 2025 11:43:42 -0300
Subject: Global initialization checks name conflict

Initialization "global a = 10" raises an error if global 'a' is already
defined, that is, it has a non-nil value.
---
 lopcodes.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lopcodes.c')

diff --git a/lopcodes.c b/lopcodes.c
index 47458e40..7e182315 100644
--- a/lopcodes.c
+++ b/lopcodes.c
@@ -103,6 +103,7 @@ LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
  ,opmode(0, 0, 0, 0, 1, iABx)		/* OP_CLOSURE */
  ,opmode(0, 1, 0, 0, 1, iABC)		/* OP_VARARG */
  ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_GETVARG */
+ ,opmode(0, 0, 0, 0, 0, iABx)		/* OP_ERRNNIL */
  ,opmode(0, 0, 1, 0, 1, iABC)		/* OP_VARARGPREP */
  ,opmode(0, 0, 0, 0, 0, iAx)		/* OP_EXTRAARG */
 };
-- 
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