Do not do global optimizations on fields and parameters when invokeOn is enabled.

sdk/lib/_internal/lib/js_helper.dart

 // Copyright (c) 2013, 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.
 
 library _js_helper;
 
 import 'dart:collection';
 import 'dart:_foreign_helper' show DART_CLOSURE_TO_JS,
                                    JS,
                                    JS_CALL_IN_ISOLATE,
@@ skipping 157 matching lines @@
     if (isIntercepted) {
       receiver = interceptor;
       if (JS('bool', '# === #', object, interceptor)) {
         interceptor = null;
       }
     } else {
       interceptor = null;
     }
     var method = JS('var', '#[#]', receiver, name);
     if (JS('String', 'typeof #', method) == 'function') {
-      if (JS('bool', '#[#] == false', method, JS_GET_NAME("REFLECTABLE"))) {
+      if (JS('bool', '!#[#]', method, JS_GET_NAME("REFLECTABLE"))) {

[ahe, 2013/09/02 09:46:49]

      String reflectableProperty = JS_GET_NAME("REFLECTABLE");
      bool hasReflectableProperty =
          JS('bool', '# in #', reflectableProperty, method);
      if (hasReflectableProperty &&
          JS('bool', '!#[#]', method, reflectableProperty)) {
        throwInvalidReflectionError(memberName);
      }

[ngeoffray, 2013/09/02 09:54:08]

That worked. Thanks Peter.

         throwInvalidReflectionError(memberName);
       }
       return new CachedInvocation(method, isIntercepted, interceptor);
     } else {
       // In this case, receiver doesn't implement name.  So we should
       // invoke noSuchMethod instead (which will often throw a
       // NoSuchMethodError).
       return new CachedNoSuchMethodInvocation(interceptor);
     }
   }
@@ skipping 1758 matching lines @@
 }
 
 /**
  * Error thrown when a runtime error occurs.
  */
 class RuntimeError extends Error {
   final message;
   RuntimeError(this.message);
   String toString() => "RuntimeError: $message";
 }