From c0ad926a1b4c0c511a952138f7c2fab3b3951b31 Mon Sep 17 00:00:00 2001
From: "brendan%mozilla.org" <brendan%mozilla.org>
Date: Fri, 20 Feb 2004 07:35:28 +0000
Subject: [PATCH] Elaborate reference error message; fix iloop in
 __hasInstance__.

---
 js/narcissus/jsexec.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/js/narcissus/jsexec.js b/js/narcissus/jsexec.js
index 6faf92ed7b97..553a7dc62416 100644
--- a/js/narcissus/jsexec.js
+++ b/js/narcissus/jsexec.js
@@ -201,6 +201,8 @@ function toObject(v, r, rn) {
             return v;
     }
     var message = r + " (type " + (typeof v) + ") has no properties";
+    if (r instanceof Reference)
+        message += ", not even " + r.propertyName;
     throw rn ? new TypeError(message, rn.filename, rn.lineno)
              : new TypeError(message);
 }
@@ -797,6 +799,7 @@ var FOp = FunctionObject.prototype = {
         while ((o = v.__proto__)) {
             if (o == p)
                 return true;
+            v = o;
         }
         return false;
     },