Noted in the historical data for JDK12, some classes and modules are included unnecessarily. See:
http://cr.openjdk.java.net/~jlahoda/8216263/webrev.00/
E.g.:
class name java/io/BufferedInputStream
in java.base-C.sym.txt.
http://cr.openjdk.java.net/~jlahoda/8216263/webrev.00/
E.g.:
class name java/io/BufferedInputStream
in java.base-C.sym.txt.