Improve messages and static use for super/this-calls.

pkg/compiler/lib/src/resolution/resolution.dart

 // Copyright (c) 2012, 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.resolution;
 
 import 'dart:collection' show Queue;
 
 import '../common.dart';
 import '../common/names.dart' show
@@ skipping 116 matching lines @@
                                      FunctionElement constructor,
                                      FunctionElement redirection) {
     assert(invariant(node, constructor.isImplementation,
         message: 'Redirecting constructors must be resolved on implementation '
                  'elements.'));
     Setlet<FunctionElement> seen = new Setlet<FunctionElement>();
     seen.add(constructor);
     while (redirection != null) {
       // Ensure that we follow redirections through implementation elements.
       redirection = redirection.implementation;
+      if (redirection.isError) {
+        break;
+      }
       if (seen.contains(redirection)) {
         reporter.reportErrorMessage(
             node, MessageKind.REDIRECTING_CONSTRUCTOR_CYCLE);
         return;
       }
       seen.add(redirection);
       redirection = resolver.visitor.resolveConstructorRedirection(redirection);
     }
   }
 
@@ skipping 944 matching lines @@
   TreeElements get treeElements {
     assert(invariant(this, _treeElements !=null,
         message: "TreeElements have not been computed for $this."));
     return _treeElements;
   }
 
   void reuseElement() {
     _treeElements = null;
   }
 }