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From "Vera Volynets (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-2644) [drlvm][kernel natives] bootclasspath's class loading failure produces wrong throwable
Date Thu, 22 Feb 2007 11:15:05 GMT

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

Vera Volynets updated HARMONY-2644:
-----------------------------------

    Attachment: add_thread_local_flag_20070222.patch

This patch is compiled from previous cloading.patch.
I only add flag is_original to VM_thread.
So now fo Class.forName(str) method right exception for different situation is thrown.
This flag is set when original class is loaded through Java_java_lang_VMClassRegistry_loadBootstrapClass
and reserted if class needs to load ancestors.

> [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: add_thread_local_flag_20070222.patch, cloading.diff, 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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