diff -r 46c04919ee5c -r 90df053536e0 src/jdk.charsets/share/classes/sun/nio/cs/ext/IBM943C.java
--- a/src/jdk.charsets/share/classes/sun/nio/cs/ext/IBM943C.java	Tue Apr 24 10:17:23 2018 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,85 +0,0 @@
-/*
- * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.nio.cs.ext;
-
-import java.nio.charset.Charset;
-import java.nio.charset.CharsetDecoder;
-import java.nio.charset.CharsetEncoder;
-import java.util.Arrays;
-import sun.nio.cs.DoubleByte;
-import sun.nio.cs.HistoricallyNamedCharset;
-
-public class IBM943C extends Charset implements HistoricallyNamedCharset
-{
-
-    public IBM943C() {
-        super("x-IBM943C", ExtendedCharsets.aliasesFor("x-IBM943C"));
-    }
-
-    public String historicalName() {
-        return "Cp943C";
-    }
-
-    public boolean contains(Charset cs) {
-        return ((cs.name().equals("US-ASCII"))
-                || (cs instanceof IBM943C));
-    }
-
-    public CharsetDecoder newDecoder() {
-        return new DoubleByte.Decoder(this,
-                                      IBM943.b2c,
-                                      b2cSB,
-                                      0x40,
-                                      0xfc);
-    }
-
-    public CharsetEncoder newEncoder() {
-        return new DoubleByte.Encoder(this, c2b, c2bIndex);
-    }
-
-    final static char[] b2cSB;
-    final static char[] c2b;
-    final static char[] c2bIndex;
-
-    static {
-        IBM943.initb2c();
-        b2cSB = new char[0x100];
-        for (int i = 0; i < 0x80; i++) {
-            b2cSB[i] = (char)i;
-        }
-        for (int i = 0x80; i < 0x100; i++) {
-            b2cSB[i] = IBM943.b2cSB[i];
-        }
-
-        IBM943.initc2b();
-        c2b = Arrays.copyOf(IBM943.c2b, IBM943.c2b.length);
-        c2bIndex = Arrays.copyOf(IBM943.c2bIndex, IBM943.c2bIndex.length);
-        for (char c = '\0'; c < '\u0080'; ++c) {
-            int index = c2bIndex[c >> 8];
-            c2b[index + (c & 0xff)] = c;
-        }
-    }
-}