From 32357114476dee269aed10466ea67cea48c21d16 Mon Sep 17 00:00:00 2001
From: James Roseborough <james.roseborough@luaj.org>
Date: Wed, 28 Jan 2009 18:40:07 +0000
Subject: [PATCH] Tighten type checking rules on concatenation operator.

---
 src/core/org/luaj/vm/LValue.java | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/core/org/luaj/vm/LValue.java b/src/core/org/luaj/vm/LValue.java
index a773e26c..10237b97 100644
--- a/src/core/org/luaj/vm/LValue.java
+++ b/src/core/org/luaj/vm/LValue.java
@@ -325,8 +325,7 @@ public class LValue {
 
 	/** Concatenate this value to a ByteArrayOutputStream */
 	public void luaConcatTo(ByteArrayOutputStream baos) {
-		byte[] b = toJavaString().getBytes();
-		baos.write(b,0,b.length);
+		throw new LuaErrorException( "attempt to concatenate "+luaGetTypeName() );
 	}
 
 	/** Return true if this is a lua string, meaning it is