From 9ba3011d1bb6deaf4635b87df7d1f8540e72fe55 Mon Sep 17 00:00:00 2001
From: Andrea Marchesini <amarchesini@mozilla.com>
Date: Wed, 6 Feb 2013 10:50:27 -0500
Subject: [PATCH] Bug 838567 - URL.createObjectURL(new Object()); in Workers
 crashes debug builds reliably. r=bent

---
 dom/workers/URL.cpp            | 4 +++-
 dom/workers/test/url_worker.js | 9 +++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/dom/workers/URL.cpp b/dom/workers/URL.cpp
index ecb3011213f2..d2fa929c016b 100644
--- a/dom/workers/URL.cpp
+++ b/dom/workers/URL.cpp
@@ -204,7 +204,9 @@ URL::CreateObjectURL(const WorkerGlobalObject& aGlobal, JSObject* aBlob,
   nsCOMPtr<nsIDOMBlob> blob = file::GetDOMBlobFromJSObject(aBlob);
   if (!blob) {
     SetDOMStringToNull(aResult);
-    aRv.Throw(NS_ERROR_TYPE_ERR);
+
+    NS_NAMED_LITERAL_STRING(blobStr, "Blob");
+    aRv.ThrowTypeError(MSG_DOES_NOT_IMPLEMENT_INTERFACE, &blobStr);
     return;
   }
 
diff --git a/dom/workers/test/url_worker.js b/dom/workers/test/url_worker.js
index c5aabd209a0f..0c7c2d8b930d 100644
--- a/dom/workers/test/url_worker.js
+++ b/dom/workers/test/url_worker.js
@@ -59,5 +59,14 @@ onmessage = function() {
   postMessage({type: 'status', status: status, msg: 'Blob URL2:' + url});
   postMessage({type: 'url', url: url});
 
+  status = false;
+  try {
+    URL.createObjectURL(new Object());
+  } catch(e) {
+    status = true;
+  }
+
+  postMessage({type: 'status', status: status, msg: 'Exception wanted' });
+
   postMessage({type: 'finish' });
 }