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Date: Tue, 8 Aug 2006 20:06:23 +0700
From: "Mikhail Fursov" <mike.fursov@gmail.com>
To: harmony-dev@incubator.apache.org
Subject: Re: [classlib][io] compatibility: need an advise
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References: <7273946b0608080212hc10f0cfh8adb36cbd96a582a@mail.gmail.com>
	 <44D85D06.9020702@gmail.com>
	 <7273946b0608080316p46f401eau3734f31fefef93f3@mail.gmail.com>

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+1 to follow RI
Here are links to similar bugs:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4010323
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4012133

AFAIU this is not a RI bug but a feature today.


On 8/8/06, Vladimir Ivanov <ivavladimir@gmail.com> wrote:
>
> On 8/8/06, Richard Liang <richard.liangyx@gmail.com> wrote:
> >
> >
> >
> > Vladimir Ivanov wrote:
> > > I need a consultation: should we follow RI or spec in the case of
> issue
> > > 1100?
> > >
> > I think we shall follow RI for this this problem. Because the behavior
> > of RI is reasonable though it seems that it is not compliant with Spec.
> > If we decide to throw NPE, maybe some use applications would break.
>
>
> OK, I'll prepare patch if nobody objects.
>
> Thanks, Vladimir
>
>
> Thanks a lot.
> >
> > Best regards,
> > Richard
> >
> > > Thanks, Vladimir
> > >
> > >
> > > On 8/8/06, Vladimir Ivanov (JIRA) <jira@apache.org> wrote:
> > >>
> > >> [classlib][io] compatibility: Harmony method
> > >> DataOutputStream(null).writeBytes("") throws NPE while RI does not
> > >>
> > >>
> >
> ---------------------------------------------------------------------------------------------------------------
> > >>
> > >>
> > >>                 Key: HARMONY-1100
> > >>                 URL:
> http://issues.apache.org/jira/browse/HARMONY-1100
> > >>             Project: Harmony
> > >>          Issue Type: Bug
> > >>          Components: Classlib
> > >>            Reporter: Vladimir Ivanov
> > >>
> > >>
> > >> The spec says for the java.io package: "Unless otherwise noted,
> > >> passing a
> > >> null argument to a constructor or method in any class or interface in
> > >> this
> > >> package will cause a NullPointerException to be thrown".
> > >> and says nothing about 'null' for DataOutputStream constructor.
> > >> So, according to spec the  DataOutputStream(null) should lead to the
> > NPE
> > >> instead of writeBytes but according to RI no NPE for constructor and
> > >> zero-length string for writeBytes.
> > >>
> > >> =================== test.java =========================
> > >> import java.io.DataOutputStream;
> > >>
> > >> public class test {
> > >>    public static void main(String args[]) throws Exception {
> > >>        System.out.println("res = " + new DataOutputStream(null));
> > >>        new DataOutputStream(null).writeBytes("");
> > >>        System.out.println("OK");
> > >>    }
> > >> }
> > >> ===================================================
> > >>
> > >> 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 = java.io.DataOutputStream@1b3494
> > >> OK
> > >>
> > >> 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.
> > >> res = java.io.DataOutputStream@13541354
> > >> Exception in thread "main" java.lang.NullPointerException
> > >>        at java.io.DataOutputStream.writeBytes(DataOutputStream.java
> > :163)
> > >>        at test.main(test.java:6)
> > >>
> > >>
> > >> --
> > >> This message is automatically generated by JIRA.
> > >> -
> > >> If you think it was sent incorrectly contact one of the
> administrators:
> > >> http://issues.apache.org/jira/secure/Administrators.jspa
> > >> -
> > >> For more information on JIRA, see:
> > >> http://www.atlassian.com/software/jira
> > >>
> > >>
> > >>
> > >
> >
> > --
> > Richard Liang
> > China Software Development Lab, IBM
> >
> >
> >
> > ---------------------------------------------------------------------
> > Terms of use : http://incubator.apache.org/harmony/mailing.html
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> >
> >
>
>


-- 
Mikhail Fursov

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