From 0dba01948794efe6290a00a9d1dff3745f4be795 Mon Sep 17 00:00:00 2001
From: Sammy Jelin <sjelin@gmail.com>
Date: Thu, 17 Mar 2016 22:08:06 -0700
Subject: [PATCH] fix(zonespec): Do not crash on error if last task had no data

Closes #281
---
 lib/zone-spec/long-stack-trace.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/zone-spec/long-stack-trace.ts b/lib/zone-spec/long-stack-trace.ts
index fc1f56f39..c564d64e8 100644
--- a/lib/zone-spec/long-stack-trace.ts
+++ b/lib/zone-spec/long-stack-trace.ts
@@ -94,13 +94,14 @@
           var value = descriptor.value;
           descriptor = {
             get: function() {
-              return renderLongStackTrace(parentTask.data[creationTrace],
+              return renderLongStackTrace(parentTask.data && parentTask.data[creationTrace],
                   delegateGet ? delegateGet.apply(this): value);
             }
           };
           Object.defineProperty(error, 'stack', descriptor);
         } else {
-          error.stack = renderLongStackTrace(parentTask.data[creationTrace], error.stack);
+          error.stack = renderLongStackTrace(parentTask.data && parentTask.data[creationTrace],
+              error.stack);
         }
       }
       return parentZoneDelegate.handleError(targetZone, error);
@@ -130,4 +131,4 @@
     }
   }
   computeIgnoreFrames();
-})();
\ No newline at end of file
+})();