Fix issue 4562 by giving a proper error message rather than crashing.

lib/compiler/implementation/resolver.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.
 
 interface TreeElements {
   Element operator[](Node node);
   Selector getSelector(Send send);
   Type getType(TypeAnnotation annotation);
 }
 
@@ skipping 491 matching lines @@
         error(diagnosticNode, MessageKind.SUPER_INITIALIZER_IN_OBJECT);
       } else {
         lookupTarget = lookupTarget.supertype.element;
       }
     }
 
     // Lookup constructor and try to match it to the selector.
     ResolverTask resolver = visitor.compiler.resolver;
     final SourceString className = lookupTarget.name;
     result = lookupTarget.lookupConstructor(className, constructorName);
-    if (result === null) {
+    if (result === null || !result.isGenerativeConstructor()) {
       String classNameString = className.slowToString();
       String constructorNameString = constructorName.slowToString();
       String name = (constructorName === const SourceString(''))
                         ? classNameString
                         : "$classNameString.$constructorNameString";
       MessageKind kind = isImplicitSuperCall
                          ? MessageKind.CANNOT_RESOLVE_CONSTRUCTOR_FOR_IMPLICIT
                          : MessageKind.CANNOT_RESOLVE_CONSTRUCTOR;
       error(diagnosticNode, kind, [name]);
     } else {
@@ skipping 1908 matching lines @@
   TopScope(LibraryElement library) : super(null, library);
   Element lookup(SourceString name) {
     return library.find(name);
   }
 
   Element add(Element newElement) {
     throw "Cannot add an element in the top scope";
   }
   String toString() => '$element';
 }