[ https://issues.apache.org/jira/browse/HARMONY-5017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12564757#action_12564757 ] 

Vladimir Beliaev commented on HARMONY-5017:
-------------------------------------------

The investigation may be started from classloader, so the JIRA is better be named as [drlvm][classloader]. 

> [drlvm] fail to load "com.vladium.emma.rt.RT" after some classlib classes are instrumented
> ------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5017
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5017
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Sean Qiu
>         Attachments: instr.jar, kernel.signature.list
>
>
> After intrumenting the public api classes,  DRLVM failed to load "com.vladium.emma.rt.RT" 
> The ibm j9 works fine with both situation.
> 1. Using normal emma.jar and the instrumented classes in your bootclasspath.
> It will fail for: 
> java/lang/ExceptionInInitializerError : (null)
> HMYEXEL062E 内部 VM 错误：未能创建 Java VM
> FAILED to invoke JVM.
> 2. Using customized emma.jar [1] and the instrumented classes in your bootclasspath.
> It will fail for :
> java/lang/ClassFormatError : com/vladium/emma/rt/RT : invalid magic
> HMYEXEL062E 内部 VM 错误：未能创建 Java VM
> FAILED to invoke JVM.
> (the magic of com.vladium.emma.rt.RT is corrent, the fail message should be reported by mistake)
> [1] http://wiki.apache.org/harmony/coverageEMMA

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