From 5829716649a543f2c7e43859e5c0e32491b61198 Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Fri, 1 Oct 2010 11:31:02 -0700
Subject: [PATCH] Fix REPL crash on tabbing 'this.'

Thanks to Tim Becker for pointing this out.
---
 lib/repl.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/repl.js b/lib/repl.js
index e4b8a1797b..ca4e3d7a2f 100644
--- a/lib/repl.js
+++ b/lib/repl.js
@@ -318,7 +318,8 @@ REPLServer.prototype.complete = function (line) {
           if (typeof obj === "object" || typeof obj === "function") {
             memberGroups.push(Object.getOwnPropertyNames(obj));
           }
-          var p = obj.constructor.prototype; // works for non-objects
+          // works for non-objects
+          var p = obj.constructor ? obj.constructor.prototype : null;
           try {
             var sentinel = 5;
             while (p !== null) {