MirrorsUsed values are interpreted differently based on position, so they must be cached in differe…

dart/tests/compiler/dart2js/mirrors_used_test.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.
 
 /// Test that the @MirrorsUsed annotation suppress hints and that only
 /// requested elements are retained for reflection.
 library dart2js.test.mirrors_used_test;
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
@@ skipping 105 matching lines @@
       }
     }
     Expect.equals(
         1, fooConstantCount,
         "The type literal 'Foo' is duplicated or missing.");
   }));
 }
 
 const MEMORY_SOURCE_FILES = const <String, String> {
   'main.dart': """
-@MirrorsUsed(targets: const [Foo], override: '*')
+// The repeated constant value for symbols and targets used to crash dart2js in
+// host-checked mode, and could potentially lead to other problems.
+@MirrorsUsed(symbols: 'Foo', targets: 'Foo', override: '*')
 import 'dart:mirrors';
 
 import 'library.dart';
 
 class Foo {
   int field;
   instanceMethod() {}
   static staticMethod() {}
 }
 
 unusedFunction() {
 }
 
 main() {
   useReflect(Foo);
 }
 """,
   'library.dart': """
 library lib;
 
 import 'dart:mirrors';
 
 useReflect(type) {
   print(new Symbol('Foo'));
   print(MirrorSystem.getName(reflectClass(type).owner.qualifiedName));
 }
 """,
 };