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 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"); } } } -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira