The javac crashes at "com.sun.tools.javac.jvm.ClassReader$BadClassFile" when trying to handle with the class file that is created by the '(new Filer()).createClassFile()' method.

Pasting the error messages below. Also attached the source code with the bug report.

<Error-MSG>
bash-2.05$ /jdk/sol/b292b/j2sdk1.6.0/bin/javac -J-version
java version "1.6.0-auto"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-auto-304a)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b58, mixed mode)

bash-2.05$ javac -cp /jdk/sol/b304a/j2sdk1.6.0/lib/tools.jar:. -processor simpleAP -processorpath simpleAP.jar -proc:only B.java
@visitType()
B
An exception has occurred in the compiler (1.6.0-auto). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
com.sun.tools.javac.jvm.ClassReader$BadClassFile: bad class file: newfile.class
illegal start of class file
Please remove or make sure it appears in the correct subdirectory of the classpath.
at com.sun.tools.javac.jvm.ClassReader.badClassFile(ClassReader.java:248)
at com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:1367)
at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:1528)
at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:1471)
at com.sun.tools.javac.code.Symbol.complete(Symbol.java:370)
at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:740)
at com.sun.tools.javac.code.Symbol$ClassSymbol.getAnnotationMirrors(Symbol.java:682)
at com.sun.tools.javac.model.JavacElements.getAllAnnotationMirrors(JavacElements.java:408)
at com.sun.tools.javac.model.JavacElements.getAllAnnotationMirrors(JavacElements.java:46)
at com.sun.tools.javac.processing.JavacProcessingEnvironment$ComputeAnnotationSet.scan(JavacProcessingEnvironment.java:477)
at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:627)
at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:843)
at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:629)
at com.sun.tools.javac.main.Main.compile(Main.java:756)
at com.sun.tools.javac.main.Main.compile(Main.java:681)
at com.sun.tools.javac.main.Main.compile(Main.java:670)
at com.sun.tools.javac.Main.compile(Main.java:70)
at com.sun.tools.javac.Main.main(Main.java:55)
</Error-MSG>