FULL PRODUCT VERSION :
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)


ADDITIONAL OS VERSION INFORMATION :
Linux honolulu.ilog.fr 2.4.21-0.13mdk #1 Fri Mar 14 15:08:06 EST 2003 i686 unknown
Windows XP


A DESCRIPTION OF THE PROBLEM :
The encoder for Cp970 returns empty byte buffers instead of throwing
UnmappableCharacterException when the input is a lone surrogate code point.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
javac niobug7.java
java niobug7


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No output.

ACTUAL -
Charset Cp970: 1024 errors


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.io.*;
import java.nio.*;
import java.nio.charset.*;

public class niobug7 {
  public static void main (String[] args) throws CharacterCodingException {
    String charset = "Cp970";
    CharsetEncoder converter = Charset.forName(charset).newEncoder();
    converter = converter.onMalformedInput(CodingErrorAction.REPORT);
    converter = converter.onUnmappableCharacter(CodingErrorAction.REPORT);
    int errors = 0;
    for (int i = 0xd800; i < 0xe000; i++) {
      char[] in = new char[] { (char)i };
      try {
        ByteBuffer out = converter.encode(CharBuffer.wrap(in));
        if (out.remaining() == 0)
          errors++;
      } catch (CharacterCodingException e) {
      }
    }
    if (errors > 0)
      System.err.println("Charset "+charset+": "+errors+" errors");
  }
}

---------- END SOURCE ----------