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Date: Tue, 3 Oct 2006 05:13:21 -0700 (PDT)
From: "Svetlana Samoilenko (JIRA)" <jira@apache.org>
To: harmony-commits@incubator.apache.org
Subject: [jira] Commented: (HARMONY-81) java.util.zip.Inflater.infalate()
 throws DataFormatException instead of actual number of uncompressed bytes
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    [ http://issues.apache.org/jira/browse/HARMONY-81?page=comments#action_12439471 ] 
            
Svetlana Samoilenko commented on HARMONY-81:
--------------------------------------------

Mikhail/ Alexey,
thank you, bug is not reproducible with latest sources. 


> java.util.zip.Inflater.infalate() throws DataFormatException instead of actual number of uncompressed bytes
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-81
>                 URL: http://issues.apache.org/jira/browse/HARMONY-81
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Svetlana Samoilenko
>         Assigned To: Mikhail Loenko
>         Attachments: fix-JIRA-81.diff, HARMONY-81-Test.diff, HARMONY-81.diff, harmony-81.diff
>
>
> Description:
> According to the j2se 1.4 and 1.5 specification method java.util.zip.Inflater.infalate(byte [] b, int off, int length ) returns actual number of bytes uncompressed and throws DataFormatException if the compressed data format is invalid.
> The test listed below shows that Harmony throws DataFormatException instead of return 0 (actual number of  uncompressed bytes).
> Code to reproduce: 
> import java.util.zip.*; 
> public class test2 { 
>     public static void main(String[] args){ 
>        Inflater inf = new Inflater();        
>        try { 
>           System.out.println("Inflater.inflate() = "+inf.inflate(new byte[0], 0, 0)); 
>        } catch(DataFormatException e) { 
>           e.printStackTrace(); 
>        } 
> } 
> } 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) 
> Inflater.inflate() = 0
> C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2 
> (c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable. 
> java.util.zip.DataFormatException:
>         at java.util.zip.Inflater.inflateImpl(Native Method)
>         at java.util.zip.Inflater.inflate(Inflater.java:169)
>         at test2.main(test2.java:7)
>         
> Suggested junit test case:
> ------------------------ InflaterTest.java ------------------------------------------------- 
> import java.util.zip.*; 
> import junit.framework.*; 
> public class InflaterTest extends TestCase { 
>      public static void main(String[] args) { 
>         junit.textui.TestRunner.run(InflaterTest.class); 
>      } 
>      public void test_inflate () { 
>        Inflater inf = new Inflater();        
>        try { 
>            int n=inf.inflate(new byte[0], 0, 0);         
>            assertEquals(0, n); 
>        } catch(DataFormatException e) { 
>            fail("unexpected  DataFormatException");
>        } 
>     } 
> }

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