| Index: sdk/lib/async/stream_controller.dart | 
| diff --git a/sdk/lib/async/stream_controller.dart b/sdk/lib/async/stream_controller.dart | 
| index 42ff1eb372d04d521d40fe8bc14456e6437c1476..b2cd7f945d87f9d786168898c408f89a74291340 100644 | 
| --- a/sdk/lib/async/stream_controller.dart | 
| +++ b/sdk/lib/async/stream_controller.dart | 
| @@ -579,7 +579,7 @@ void _runGuarded(_NotificationHandler notificationHandler) { | 
| try { | 
| notificationHandler(); | 
| } catch (e, s) { | 
| -    Zone.current.handleUncaughtError(_asyncError(e, s)); | 
| +    Zone.current.handleUncaughtError(_asyncError(e, s), s); | 
| } | 
| } | 
|  | 
|  |