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From "Alexey Varlamov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-2644) [drlvm][kernel natives] bootclasspath's class loading failure produces wrong throwable
Date Tue, 06 Feb 2007 10:23:06 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-2644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12470505
] 

Alexey Varlamov commented on HARMONY-2644:
------------------------------------------

Pavel, the Eclipse issue has gone for me too. 
I'm just confused: the patch actually fixes HARMONY-2846 (as its name hints) but does not
change behaviour for this issue. 
AFAIU the complete fix must be done on VM side, to differentiate between classloading requests
coming from API and usual resolution requests, so it will throw ClassNotFoundException and
NoClassDefFoundError respectively.

So I'm going to proceed with fixing HARMONY-2846 and leave this one open.

> [drlvm][kernel natives] bootclasspath's class loading failure produces wrong throwable
> --------------------------------------------------------------------------------------
>
>                 Key: HARMONY-2644
>                 URL: https://issues.apache.org/jira/browse/HARMONY-2644
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Vladimir Beliaev
>         Assigned To: Alexey Varlamov
>            Priority: Minor
>         Attachments: H2846.patch, Test.java
>
>
> DRLVM throws ClassNotFoundException instead of NoClassDefFoundError if it fails to load
class from bootclasspath.
> I did not find the exact place in specification saying it is wrong behavior, still 
> 1. JVMS operates with NoClassDefFoundError only in case the loading process failed. 
> 2. both Sun & JRockit java throws NoClassDefFoundError from the test below.
> To reproduce the issue, please do the following:
> a) compile attached Test.java (this produces Test.class, SubClass.class and SuperClass.class)
> b) remove SuperClass.class 
> c) run test with SubClass in bootclasspath, e.g.
>   
>     $ ls -1 *.class
>     Test.class SubClass.class
>     $ java -Xbootclasspath/a:. Test
> The output on Reference Implementation:
>     PASSED: got NoClassDefFoundError...
>     Note: run Test with SubClass in bootclasspath...
> The output on Harmony DRLVM (with -showversion key):
>     Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation
or its licensors, as applicable.
>     java version "1.5.0" 
>     pre-alpha : not complete or compatible
>     svn = r486063, (Dec 12 2006), Windows/ia32/msvc 1310, debug build
>     http://incubator.apache.org/harmony
>     FAILED: got ClassNotFoundException...
> Thanks
> Vladimir

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