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From "Alexey Petrenko (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-81) java.util.zip.Inflater.infalate() throws DataFormatException instead of actual number of uncompressed bytes
Date Thu, 14 Sep 2006 12:43:25 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-81?page=all ]

Alexey Petrenko updated HARMONY-81:
-----------------------------------

    Attachment: HARMONY-81-Test.diff

I could not find a regression test for this issue in the test suite.
So here it is.

> 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
>
>
> 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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