Prevent double reporting on hex, strings, and multiline comments.

tests/compiler/dart2js/message_kind_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 dart2js.test.message_kind_helper;
 
 import 'package:expect/expect.dart';
 import 'dart:async';
 
 import 'package:compiler/implementation/dart2jslib.dart' show
@@ skipping 21 matching lines @@
     MessageKind.FORMAL_DECLARED_CONST,
     MessageKind.FORMAL_DECLARED_STATIC,
     MessageKind.FUNCTION_TYPE_FORMAL_WITH_DEFAULT,
     MessageKind.HIDDEN_IMPLICIT_IMPORT,
     MessageKind.HIDDEN_IMPORT,
     MessageKind.INHERIT_GETTER_AND_METHOD,
     MessageKind.UNIMPLEMENTED_METHOD,
     MessageKind.UNIMPLEMENTED_METHOD_ONE,
     MessageKind.VAR_FUNCTION_TYPE_PARAMETER,
     MessageKind.VOID_NOT_ALLOWED,
-
-    MessageKind.HEX_DIGIT_EXPECTED, // http://dartbug.com/18574
-    MessageKind.UNMATCHED_TOKEN, // http://dartbug.com/18574
-    MessageKind.UNTERMINATED_COMMENT, // http://dartbug.com/18574
-    MessageKind.UNTERMINATED_STRING, // http://dartbug.com/18574
 ]);
 
 /// Most messages can be tested without causing a fatal error. Add an exception
 /// here if a fatal error is unavoidable and leads to pending classes.
 /// Try to avoid adding exceptions here; a fatal error causes the compiler to
 /// stop before analyzing all input, and it isn't safe to reuse it.
 final Set<MessageKind> kindsWithPendingClasses = new Set<MessageKind>.from([
     // If you add something here, please file a *new* bug report.
 ]);
 
 /// Most messages can be tested without causing a fatal error. Add an exception
 /// here if a fatal error is unavoidable.
 /// Try to avoid adding exceptions here; a fatal error causes the compiler to
 /// stop before analyzing all input, and it isn't safe to reuse it.
 final Set<MessageKind> kindsWithFatalErrors = new Set<MessageKind>.from([
     // If you add something here, please file a *new* bug report.
-    MessageKind.HEX_DIGIT_EXPECTED,
     MessageKind.UNMATCHED_TOKEN,
     MessageKind.UNTERMINATED_STRING,
 ]);
 
 Future<Compiler> check(MessageKind kind, Compiler cachedCompiler) {
   Expect.isNotNull(kind.howToFix);
   Expect.isFalse(kind.examples.isEmpty);
 
   return Future.forEach(kind.examples, (example) {
     if (example is String) {
@@ skipping 70 matching lines @@
       Expect.isTrue(!pendingStuff || kindsWithPendingClasses.contains(kind));
 
       if (!pendingStuff && !compiler.compilerWasCancelled) {
         // If there is pending stuff, or the compiler was cancelled, we
         // shouldn't reuse the compiler.
         cachedCompiler = compiler;
       }
     });
   }).then((_) => cachedCompiler);
 }