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From "Vladimir Ivanov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-841) [classlib][io] java.io.BufferedReader.read() throws unspesified ArrayIndexOutOfBoundsException
Date Wed, 12 Jul 2006 03:31:29 GMT
[classlib][io] java.io.BufferedReader.read() throws unspesified ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------

         Key: HARMONY-841
         URL: http://issues.apache.org/jira/browse/HARMONY-841
     Project: Harmony
        Type: Bug

  Components: Classlib  
    Reporter: Vladimir Ivanov


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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