Add second argument to Future error handlers.

sdk/lib/async/stream_impl.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart.async;
 
 /** Abstract and private interface for a place to put events. */
 abstract class _EventSink<T> {
   void _add(T data);
   void _addError(Object error);
@@ skipping 318 matching lines @@
   }
 
   void _sendError(var error) {
     assert(!_isCanceled);
     assert(!_isPaused);
     assert(!_inCallback);
     bool wasInputPaused = _isInputPaused;
     _state |= _STATE_IN_CALLBACK;
     if (!_zone.inSameErrorZone(Zone.current)) {
       // Errors are not allowed to traverse zone boundaries.
-      Zone.current.handleUncaughtError(error);
+      Zone.current.handleUncaughtError(error, getAttachedStackTrace(error));
     } else {
       _zone.runUnaryGuarded(_onError, error);
     }
     _state &= ~_STATE_IN_CALLBACK;
     if (_cancelOnError) {
       _cancel();
     }
     _checkState(wasInputPaused);
   }
 
@@ skipping 174 matching lines @@
 
 // Types of the different handlers on a stream. Types used to type fields.
 typedef void _DataHandler<T>(T value);
 typedef void _ErrorHandler(error);
 typedef void _DoneHandler();
 
 
 /** Default data handler, does nothing. */
 void _nullDataHandler(var value) {}
 
-/** Default error handler, reports the error to the global handler. */
+/** Default error handler, reports the error to the current zone's handler. */
 void _nullErrorHandler(error) {
-  Zone.current.handleUncaughtError(error);
+  Zone.current.handleUncaughtError(error, getAttachedStackTrace(error));
 }
 
 /** Default done handler, does nothing. */
 void _nullDoneHandler() {}
 
 
 /** A delayed event on a buffering stream subscription. */
 abstract class _DelayedEvent {
   /** Added as a linked list on the [StreamController]. */
   _DelayedEvent next;
@@ skipping 448 matching lines @@
       _Future<bool> hasNext = _futureOrPrefetch;
       _clear();
       hasNext._complete(false);
       return;
     }
     _subscription.pause();
     _futureOrPrefetch = null;
     _state = _STATE_EXTRA_DONE;
   }
 }