From bed9b485be2791a43e48eadaa304055a6eb47ea2 Mon Sep 17 00:00:00 2001
From: Boris Zbarsky <bzbarsky@mit.edu>
Date: Thu, 3 Apr 2014 23:32:11 -0400
Subject: [PATCH] Bug 991753.  Make sure we're in the right compartment before
 we try wrapping our Promise in Promise::GetOrCreateWrapper.  r=bholley

---
 dom/promise/Promise.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dom/promise/Promise.cpp b/dom/promise/Promise.cpp
index 23ea7f5de5a..5941f160e58 100644
--- a/dom/promise/Promise.cpp
+++ b/dom/promise/Promise.cpp
@@ -254,6 +254,8 @@ Promise::GetOrCreateWrapper(JSContext* aCx)
     return nullptr;
   }
 
+  JSAutoCompartment ac(aCx, scope);
+
   JS::Rooted<JS::Value> val(aCx);
   if (!WrapNewBindingObject(aCx, scope, this, &val)) {
     MOZ_ASSERT(JS_IsExceptionPending(aCx));