Add a new language test failing in dart2js and analyzer.

tests/language/redirecting_factory_malbounded_test.dart

Index: tests/language/redirecting_factory_malbounded_test.dart
===================================================================
--- tests/language/redirecting_factory_malbounded_test.dart	(revision 0)
+++ tests/language/redirecting_factory_malbounded_test.dart	(revision 0)
@@ -0,0 +1,24 @@
+// 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.
+
+class Foo<T> extends Bar<T> {
+
+  factory Foo() = Bar;
+
+  Foo.create() : super.create() { }  // Super call required due to issue 5838.
+}
+
+class Bar<T
+            extends num  /// 01: static type warning, dynamic type error
+                       > {
+  factory Bar() {
+    return new Foo<T>.create();
+  }
+
+  Bar.create() { }
+}
+
+main() {
+  new Foo<String>();
+}