Fix analyzer's treatment of mixin constructors.

pkg/analyzer/lib/src/generated/resolver.dart

 // Copyright (c) 2014, 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 engine.resolver;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'java_core.dart';
@@ skipping 5738 matching lines @@
       if (superclassElement != null) {
         List<ConstructorElement> constructors = superclassElement.constructors;
         int count = constructors.length;
         if (count > 0) {
           List<DartType> parameterTypes = TypeParameterTypeImpl.getTypes(superclassType.typeParameters);
           List<DartType> argumentTypes = _getArgumentTypes(node.superclass.typeArguments, parameterTypes);
           InterfaceType classType = classElement.type;
           List<ConstructorElement> implicitConstructors = new List<ConstructorElement>();
           for (int i = 0; i < count; i++) {
             ConstructorElement explicitConstructor = constructors[i];
-            if (!explicitConstructor.isFactory) {
+            if (!explicitConstructor.isFactory &&
+                classElement.isSuperConstructorAccessible(explicitConstructor)) {
               implicitConstructors.add(_createImplicitContructor(classType, explicitConstructor, parameterTypes, argumentTypes));
             }
           }
+          if (implicitConstructors.isEmpty) {
+            reportErrorForNode(CompileTimeErrorCode.MIXIN_HAS_NO_CONSTRUCTORS,
+                node, [superclassElement.name]);
+          }
           classElement.constructors = implicitConstructors;
         }
       }
     }
     return null;
   }
 
   @override
   Object visitEnumDeclaration(EnumDeclaration node) => null;
 
@@ skipping 9783 matching lines @@
   /**
    * Return the tag that has the given identifier, or {@code null} if there is no such tag (the
    * identifier is not defined).
    *
    * @return the tag that has the given identifier
    */
   String getTagWithId(String identifier) {
     return idToTagMap[identifier];
   }
 }