Malformed classfile with this_class index equals to 0 results in NullPointerException using javac -Xprint

An exception has occurred in the compiler (1.9.0-ea). 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.
java.lang.NullPointerException
        at com.sun.tools.javac.jvm.ClassReader.readClass(ClassReader.java:2214)
        at com.sun.tools.javac.jvm.ClassReader.readClassBuffer(ClassReader.java:2325)
        at com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:2336)
        at com.sun.tools.javac.code.ClassFinder.fillIn(ClassFinder.java:250)
        at com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:192)
        at com.sun.tools.javac.code.ClassFinder.access$000(ClassFinder.java:58)
        at com.sun.tools.javac.code.ClassFinder$1.complete(ClassFinder.java:129)
        at com.sun.tools.javac.code.Symbol.complete(Symbol.java:565)
        at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1035)
        at com.sun.tools.javac.code.ClassFinder.loadClass(ClassFinder.java:304)
        at com.sun.tools.javac.main.JavaCompiler.resolveBinaryNameOrIdent(JavaCompiler.java:674)
        at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1131)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:858)
        at com.sun.tools.javac.main.Main.compile(Main.java:541)
        at com.sun.tools.javac.main.Main.compile(Main.java:392)
        at com.sun.tools.javac.main.Main.compile(Main.java:381)
        at com.sun.tools.javac.main.Main.compile(Main.java:372)
        at com.sun.tools.javac.Main.compile(Main.java:74)
        at javacException.javac(javacException.java:55)
        at javacException.run(javacException.java:22)
        at javacException.main(javacException.java:17)