NPE in Type.java due to recent change

This changeset, http://hg.openjdk.java.net/jdk8/tl/langtools/rev/09301757bb32, results in an NPE at at com.sun.tools.javac.code.Type.isCompound(Type.java:390)

Failing test: apt/types/inherited

Compile and run processor below:

javac InheritedAP.java
javac -cp . -processor InheritedAP -proc:only InheritedAP.java

>>iface's superclass: <none>
InheritedAP.getTypes().directSupertypes( <none> );


An annotation processor threw an uncaught exception.
Consult the following stack trace for details.
java.lang.NullPointerException
        at com.sun.tools.javac.code.Type.isCompound(Type.java:390)
        at com.sun.tools.javac.code.Types$22.visitType(Types.java:2424)
        at com.sun.tools.javac.code.Types$22.visitType(Types.java:2421)
        at com.sun.tools.javac.code.Type.accept(Type.java:169)
        at com.sun.tools.javac.code.Types$UnaryVisitor.visit(Types.java:4481)
        at com.sun.tools.javac.code.Types.directSupertypes(Types.java:2418)
        at com.sun.tools.javac.model.JavacTypes.directSupertypes(JavacTypes.java:119)
        at SimpleTypeMirrorVisitor.defaultAction(InheritedAP.java:37)
        at SimpleTypeMirrorVisitor.defaultAction(InheritedAP.java:33)
        at javax.lang.model.util.SimpleTypeVisitor6.visitNoType(SimpleTypeVisitor6.java:226)
        at com.sun.tools.javac.code.Type$JCNoType.accept(Type.java:1652)
        at ElementScanner.scan(InheritedAP.java:57)
        at InheritedAP.process(InheritedAP.java:26)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1169)
        at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1179)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:865)
        at com.sun.tools.javac.main.Main.compile(Main.java:523)
        at com.sun.tools.javac.main.Main.compile(Main.java:381)
        at com.sun.tools.javac.main.Main.compile(Main.java:370)
        at com.sun.tools.javac.main.Main.compile(Main.java:361)
        at com.sun.tools.javac.Main.compile(Main.java:56)
        at com.sun.tools.javac.Main.main(Main.java:42)

Source: InheritedAP.java

import java.util.*;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.lang.model.type.*;
import javax.lang.model.util.*;
import java.lang.annotation.*;
import static javax.lang.model.type.TypeKind.*;
import static javax.lang.model.SourceVersion.*;
import static javax.lang.model.util.ElementFilter.*;

@SupportedAnnotationTypes("testclass")
@SupportedSourceVersion(RELEASE_8)
public class InheritedAP extends AbstractProcessor {
    static Types types;
    public void init(ProcessingEnvironment penv) {super.init(penv);}
    public static Types getTypes() { return types; }
    
    public boolean process(Set<? extends TypeElement> typeElementSet,RoundEnvironment renv) {
        if ( renv.errorRaised()) { System.out.println("Error!"); return false; }
        if ( typeElementSet.size() <=0 && typesIn(renv.getRootElements()).size() <= 0 ) {
            return true;
        }
        types=processingEnv.getTypeUtils();
        for (TypeElement typeElem: typesIn(renv.getRootElements())) {
            if (typeElem.getAnnotation(testclass.class) != null) {
                new ElementScanner( new SimpleTypeMirrorVisitor()).scan(typeElem, null);
            }
        }
        return true ;
    }
}

class SimpleTypeMirrorVisitor extends SimpleTypeVisitor6 <Void, Void> {
    protected Void defaultAction(TypeMirror mirror, Void p ) {
        try {
            System.out.println( "InheritedAP.getTypes().directSupertypes( "+mirror.toString()+" );" );
            InheritedAP.getTypes().directSupertypes(mirror);
            System.out.println("PASS");
        }catch(java.lang.IllegalArgumentException iae) {/*stuff*/ }
        return p;
    }
}

class ElementScanner <T extends SimpleTypeVisitor6<Void, Void> >
                    extends ElementScanner6<Void, Void> {
    SimpleTypeVisitor6<Void, Void> typeVisitor;

    public ElementScanner(T typeVisitor) { this.typeVisitor=typeVisitor;}

    @Override
    public Void scan(Element e, Void p) {
         if (e instanceof TypeElement ) {
            TypeElement te = (TypeElement) e;
            System.out.println(">>" + te.toString() + "'s superclass: " +
                               te.getSuperclass().toString());
            te.getSuperclass().accept(typeVisitor,p);
        }
        return p;
    }

}


@interface testclass { }

@testclass
@interface iface { }