From f30c4c3bec6f8528697f7d7c322457052764272b Mon Sep 17 00:00:00 2001
From: UnlegitDqrk <finn.abadi@outlook.de>
Date: Sun, 1 Mar 2026 13:04:22 +0100
Subject: [PATCH] Fixed varargs invocation from luajava

---
 .../java/org/luaj/vm2/libs/jse/JavaMember.java | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/jse/src/main/java/org/luaj/vm2/libs/jse/JavaMember.java b/jse/src/main/java/org/luaj/vm2/libs/jse/JavaMember.java
index 95e9bbee..6906b7c9 100644
--- a/jse/src/main/java/org/luaj/vm2/libs/jse/JavaMember.java
+++ b/jse/src/main/java/org/luaj/vm2/libs/jse/JavaMember.java
@@ -52,7 +52,7 @@ class JavaMember extends VarArgFunction {
 		fixedargs = new CoerceLuaToJava.Coercion[isvarargs? params.length-1: params.length];
 		for ( int i=0; i<fixedargs.length; i++ )
 			fixedargs[i] = CoerceLuaToJava.getCoercion( params[i] );
-		varargs = isvarargs? CoerceLuaToJava.getCoercion( params[params.length-1] ): null;
+		varargs = isvarargs? CoerceLuaToJava.getCoercion( params[params.length-1].getComponentType() ): null;
 	}
 
 	int score(Varargs args) {
@@ -73,17 +73,15 @@ class JavaMember extends VarArgFunction {
 			for ( int i=0; i<a.length; i++ )
 				a[i] = fixedargs[i].coerce( args.arg(i+1) );
 		} else {
-			int n = Math.max(fixedargs.length,args.narg());
-			// This situation indicates that the method has only one input parameter,
-			// and the parameter is a variable parameter type, etc: append(String...args).
-			if (n == 0 && varargs instanceof CoerceLuaToJava.ArrayCoercion) {
-				return new Object[] {Array.newInstance(((CoerceLuaToJava.ArrayCoercion)varargs).componentType,0)};
-			}
-			a = new Object[n];
+			// should be the fixed arguments, followed by an array with the varargs
+			a = new Object[fixedargs.length+1];
+			int nvar = Math.max(0, args.narg()-fixedargs.length);
+			Object[] vararray = new Object[nvar];
 			for ( int i=0; i<fixedargs.length; i++ )
 				a[i] = fixedargs[i].coerce( args.arg(i+1) );
-			for ( int i=fixedargs.length; i<n; i++ )
-				a[i] = varargs.coerce( args.arg(i+1) );
+			a[a.length-1] = vararray;
+			for ( int i=0; i<nvar; i++ )
+				vararray[i] = varargs.coerce( args.arg(fixedargs.length+i+1) );
 		}
 		return a;
 	}