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From "Vasily Zakharov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-4515) [drlvm][jit] ClassCastException is thrown with low detail
Date Fri, 03 Aug 2007 17:57:52 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-4515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12517599
] 

Vasily Zakharov commented on HARMONY-4515:
------------------------------------------

Gregory, the problem seems to be resolved both in Intepreter and JIT mode - it works fine
for me on both Windows and Linux.

Could you please double check it in your environment to make sure the problem exists?

Thank you!


> [drlvm][jit] ClassCastException is thrown with low detail
> ---------------------------------------------------------
>
>                 Key: HARMONY-4515
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4515
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Vasily Zakharov
>            Assignee: Gregory Shimansky
>            Priority: Minor
>         Attachments: H4515.patch, H4515.patch
>
>
> DRLVM, when throws ClassCastException, provides no detail about what were the class being
cast and the target for the cast. This makes localizing problems in applications more difficult.
> RI provides information only on the class being cast, and IBM VME provides information
on both.
> This situation is not certainly a bug, it may be considered an Improvement or Non-bug
difference from RI. However I think DRLVM should better follow the IBM VME behavior, or, at
least, RI behavior, to improve its usability.
> Test to reproduce the problem:
> public class Test {
>     public static void main(String[] args) {
>         try {
>             Class c = (Class) (Object) "test";
>         } catch (Throwable e) {
>             e.printStackTrace();
>         }
>     }
> }
> Output on RI:
> java.lang.ClassCastException: java.lang.String
>         at Test.main(Test.java:4)
> Harmony/IBM VME:
> java.lang.ClassCastException: java.lang.String incompatible with java.lang.Class
>         at Test.main(Test.java:4)
> Harmony/DRLVM:
> java.lang.ClassCastException
>         at Test.main(Test.java:4)

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