- Properly canonicalize enum values.

tests/language/enum_const_test.dart

+// Copyright (c) 2014, 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.
+
+import "dart:isolate";
+import "package:expect/expect.dart";
+
+enum Foo {
+  BAR, BAZ
+}
+
+verify(val) {
+  Expect.identical(Foo.BAR, val);
+}
+
+main() {
+  verify(Foo.BAR);
+  var rp;
+  rp = new RawReceivePort((val) {
+    verify(val);
+    rp.close();
+  });
+  rp.sendPort.send(Foo.BAR);
+}