- Force errors when using bad types or overrides.

runtime/lib/mirrors_impl.dart

Index: runtime/lib/mirrors_impl.dart
===================================================================
--- runtime/lib/mirrors_impl.dart	(revision 29812)
+++ runtime/lib/mirrors_impl.dart	(working copy)
@@ -221,11 +221,11 @@
   {
     if (arg is Mirror) {
         if (arg is! InstanceMirror) {
-          throw new MirrorException(
+          throw /* new MirrorException */(
               'positional argument $i ($arg) was not an InstanceMirror');
         }
       } else if (!_isSimpleValue(arg)) {
-        throw new MirrorException(
+        throw /* new MirrorException */(
             'positional argument $i ($arg) was not a simple value');
       }
   }
@@ -1252,7 +1252,7 @@
       } else {
         var parts = MirrorSystem.getName(simpleName).split('.');
         if (parts.length > 2) {
-          throw new MirrorException(
+          throw /* new MirrorException */(

[siva, 2013/11/04 16:32:20]

Should this be new InternalError(...) the comment seems to indicate it is an
Internal error.

               'Internal error in MethodMirror.constructorName: '
               'malformed name <$simpleName>');
         } else if (parts.length == 2) {