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From "Paulex Yang (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HARMONY-841) [classlib][io] java.io.BufferedReader.read() throws unspesified ArrayIndexOutOfBoundsException
Date Mon, 24 Jul 2006 06:28:18 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-841?page=all ]

Paulex Yang resolved HARMONY-841.
---------------------------------

    Resolution: Fixed

Vladimir, patch applied at revision r424926, thanks a lot for this enhancement, please verify
that the problem is fully fixed as you expected.

> [classlib][io] java.io.BufferedReader.read() throws unspesified ArrayIndexOutOfBoundsException
> ----------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-841
>                 URL: http://issues.apache.org/jira/browse/HARMONY-841
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Vladimir Ivanov
>         Assigned To: Paulex Yang
>         Attachments: BufferedReaderTest.patch, CharArrayReader.patch
>
>
> According to specification java.io. BufferedReader.read() returns "the character read,
or -1 if the end of the stream has been reached".
> The test listed below shows that RI returns -1 while Harmony throws unexpected ArrayIndexOutOfBoundsException.
> =============== test.java =========================
> import java.io.*;
> public class test  { 
>     public static void main (String[] args) {   
>        try {
>            System.out.println("res = " + new BufferedReader(new CharArrayReader(new char[5],
1, 0), 2).read());
>        } catch (Exception e) {
>            e.printStackTrace();
>        }        
>     }
> }
> =============================================
> Output:
> C:\tmp\tmp17>C:\jrockit-jdk1.5.0-windows-ia32\bin\java.exe -cp . -showversion test
> java version "1.5.0"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
> BEA WebLogic JRockit(R) (build dra-38972-20041208-2001-win-ia32, R25.0.0-75, GC: System
optimized over throughput (initial strategy singleparpar))
> res = -1
> C:\tmp\tmp17>C:\harmony\trunk_0427\deploy\jdk\jre\bin\java.exe -cp . -showversion
test
> java version 1.5 (subset)
> (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
> java.lang.ArrayIndexOutOfBoundsException
>         at java.lang.Throwable.<init>(Throwable.java:61)
>         at java.lang.System.arraycopy(System.java:358)
>         at java.lang.System.arraycopy(System.java:190)
>         at java.io.CharArrayReader.read(CharArrayReader.java:187)
>         at java.io.BufferedReader.fillbuf(BufferedReader.java:108)
>         at java.io.BufferedReader.read(BufferedReader.java:205)
>         at test.main(test.java:6)

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