From b8b951b7c971527f28681f6bfeda86cc57fb2325 Mon Sep 17 00:00:00 2001
From: Enrico Horn <farmboy0+git@googlemail.com>
Date: Tue, 13 Jul 2021 22:14:06 +0200
Subject: [PATCH] Fix order of argument checks in debug.setupvalue

---
 luaj-core/src/main/java/org/luaj/vm2/lib/DebugLib.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/luaj-core/src/main/java/org/luaj/vm2/lib/DebugLib.java b/luaj-core/src/main/java/org/luaj/vm2/lib/DebugLib.java
index 20349c89..a2efa1bf 100644
--- a/luaj-core/src/main/java/org/luaj/vm2/lib/DebugLib.java
+++ b/luaj-core/src/main/java/org/luaj/vm2/lib/DebugLib.java
@@ -379,9 +379,9 @@ public class DebugLib extends TwoArgFunction {
 	static final class setupvalue extends VarArgFunction {
 		@Override
 		public Varargs invoke(Varargs args) {
-			LuaValue func = args.checkfunction(1);
+			LuaValue value = args.checkvalue(3);
 			int up = args.checkint(2);
-			LuaValue value = args.arg(3);
+			LuaValue func = args.checkfunction(1);
 			if (func instanceof LuaClosure) {
 				LuaClosure c = (LuaClosure) func;
 				LuaString name = findupvalue(c, up);