From 3d6a4deda105e68949887badc9ddc1c4daa2a3c3 Mon Sep 17 00:00:00 2001
From: "beard%netscape.com" <beard%netscape.com>
Date: Fri, 11 Jan 2002 04:42:11 +0000
Subject: [PATCH] copy(NULL) == NULL

---
 js2/src/collector.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/js2/src/collector.cpp b/js2/src/collector.cpp
index 5ae31cb819c1..56c47642bd9e 100644
--- a/js2/src/collector.cpp
+++ b/js2/src/collector.cpp
@@ -129,6 +129,9 @@ inline bool isForwardingPointer(void* ptr)
 
 void* Collector::copy(void* object, Collector::size_type size)
 {
+    if (object == NULL)
+        return NULL;
+        
     // forwarding pointer?
     ObjectHeader* oldHeader = ((ObjectHeader*)object) - 1;
     if (isForwardingPointer(oldHeader->mForwardingPointer))