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Posted to dev@harmony.apache.org by "Tim Ellison (JIRA)" <ji...@apache.org> on 2006/03/07 12:02:39 UTC
[jira] Closed: (HARMONY-99)
java.nio.charset.CharsetDecoder.decode(ByteBuffer in) does not throw
MalformedInputException when buffer's current position is not legal
[ http://issues.apache.org/jira/browse/HARMONY-99?page=all ]
Tim Ellison closed HARMONY-99:
------------------------------
Verified by Svetlana
> java.nio.charset.CharsetDecoder.decode(ByteBuffer in) does not throw MalformedInputException when buffer's current position is not legal
> ----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HARMONY-99
> URL: http://issues.apache.org/jira/browse/HARMONY-99
> Project: Harmony
> Type: Bug
> Components: Classlib
> Reporter: Svetlana Samoilenko
> Assignee: Tim Ellison
> Attachments: CharsetDecoder_patch.txt
>
> According to 1.4.2 and 1.5 java.nio.charset.CharsetDecoder.decode(ByteBuffer in) throws
> MalformedInputException - If the byte sequence starting at the input buffer's current position is not legal for this charset and the current malformed-input action is CodingErrorAction.REPORT.
> Harmony does not throw MalformedInputException in this case as test listed below shows.
> Code to reproduce:
> import java.nio.*;
> import java.nio.charset.*;
> public class test2 {
> public static void main(String[] args) throws Exception {
> Charset cs =Charset.forName("utf-16");
> CharsetDecoder decoder = cs.newDecoder();
> decoder.onMalformedInput(CodingErrorAction.REPORT);
> decoder.onUnmappableCharacter(CodingErrorAction.REPORT);
>
> CharBuffer out = CharBuffer.allocate(10);
> ByteBuffer in = ByteBuffer.wrap(new byte[] { 109, 97, 109});
> CharBuffer res1 = decoder.decode(in);
> //output
> System.out.println("CharBuffer=="+res1);
> System.out.println("CharBuffer.position =="+res1.position());
> System.out.println("toHexString=="+Integer.toHexString(res1.charAt(0)));
> System.out.println("ByteBuffer.position()=="+in.position());
> System.out.println("ByteBuffer.remaining()=="+in.remaining());
> }
> }
> Steps to Reproduce:
> 1. Build Harmony (check-out on 2006-01-30) j2se subset as described in README.txt.
> 2. Compile test2.java using BEA 1.4 javac
> > javac -d . test2.java
> 3. Run java using compatible VM (J9)
> > java -showversion test2
> Output:
> C:\tmp>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test2
> java version "1.4.2_04"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
> BEA WebLogic JRockit(TM) 1.4.2_04 JVM (build ari-31788-20040616-1132-win-ia32, Native Threads, GC strategy: parallel)
> java.nio.charset.MalformedInputException: Input length = 1
> at java.nio.charset.CoderResult.throwException()V(CoderResult.java:260)
> at java.nio.charset.CharsetDecoder.decode(Ljava.nio.ByteBuffer;)Ljava.nio.CharBuffer;(CharsetDecoder.java:763)
> at test2.main([Ljava.lang.String;)V(test2.java:34)
> C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2
> (c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable.
> res1==
> res1==0
> toHexString==6d61
> ByteBuffer.position()==3
> ByteBuffer.remaining()==0
> Suggested junit test case:
> ------------------------ CharsetDecoderTest.java -------------------------------------------------
> import junit.framework.*;
> import java.nio.*;
> import java.nio.charset.*;
> public class CharsetDecoderTest extends TestCase {
> public static void main(String[] args) {
> junit.textui.TestRunner.run(CharsetDecoderTest.class);
> }
> public void test_decode() {
> try {
> Charset cs =Charset.forName("utf-16");
> CharsetDecoder decoder = cs.newDecoder();
> decoder.onMalformedInput(CodingErrorAction.REPORT);
> decoder.onUnmappableCharacter(CodingErrorAction.REPORT);
> CharBuffer out = CharBuffer.allocate(10);
> ByteBuffer in = ByteBuffer.wrap(new byte[] { 109, 97, 109});
> CharBuffer res1 = decoder.decode(in);
> fail("MalformedInputException should have thrown");
> } catch (MalformedInputException e) {
> //expected
> } catch (CharacterCodingException e) {
> fail("unexpected CharacterCodingException");
> }
> }
> }
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