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From "Vladimir Ivanov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-802) [classlib][nio] java.nio.ByteBuffer.compareTo( ByteBuffer) returns wrong value
Date Fri, 07 Jul 2006 10:50:30 GMT
[classlib][nio] java.nio.ByteBuffer.compareTo( ByteBuffer) returns wrong value
------------------------------------------------------------------------------

         Key: HARMONY-802
         URL: http://issues.apache.org/jira/browse/HARMONY-802
     Project: Harmony
        Type: Bug

  Components: Classlib  
    Reporter: Vladimir Ivanov


Method must return: "A negative integer, zero, or a positive integer as this buffer is less
than, equal to, or greater than the given buffer".
But in the Harmony implementation the ByteBuffer.allocateDirect()  and ByteBuffer.wrap(new
byte[]) does not equals due to different initialization symbols (it is easy to catch if add
debug message to the ByteBuffer.compareTo() method).

===================== test.java =======================
import java.nio.*;
public class test  { 
    public static void main (String[] args) {   
       try {                                                                             
            System.out.println(ByteBuffer.wrap(new byte[839]).compareTo(ByteBuffer.allocateDirect(137)));
       } catch (Exception e) {
           e.printStackTrace();
       }    
    }
}
===================================================

Output:

C:\tmp\tmp17>C:\jrockit-jdk1.5.0-windows-ia32\bin\java.exe -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))

702

C:\tmp\tmp17>C:\harmony\trunk_0427\deploy\jdk\jre\bin\java.exe -showversion test
java version 1.5 (subset)

(c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
thisByte = 0, otherByte = 31
-1



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