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From "Vladimir Beliaev (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5327) [classlib][JSPWiki] NPE in StringBuffer.getChars on start on Linux
Date Wed, 09 Jan 2008 17:49:34 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12557357#action_12557357
] 

Vladimir Beliaev commented on HARMONY-5327:
-------------------------------------------

It may worth running it with J9 on Linux to get the first clue if this is DRLVM issue. The
next step may be running it with -Xint to check if this is JIT or shared issue of VM...

> [classlib][JSPWiki] NPE in StringBuffer.getChars on start on Linux
> ------------------------------------------------------------------
>
>                 Key: HARMONY-5327
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5327
>             Project: Harmony
>          Issue Type: Bug
>          Components: App-Oriented Bug Reports, Classlib
>    Affects Versions: 5.0M4
>         Environment: Linux, Tomcat
>            Reporter: Alexey Petrenko
>            Priority: Blocker
>
> JSPWiki can not start on Linux and throws the following NPEs:
> log4j:ERROR Error occured while converting date.
> java.lang.NullPointerException: bad arrayCopy
> 	at java.lang.VMMemoryManager.arrayCopy(Native Method)
> 	at java.lang.System.arraycopy(Unknown Source)
> 	at java.lang.AbstractStringBuilder.getChars(AbstractStringBuilder.java:319)
> 	at java.lang.StringBuffer.getChars(StringBuffer.java:476)
> 	at org.apache.log4j.helpers.ISO8601DateFormat.format(ISO8601DateFormat.java:128)
> 	at java.text.DateFormat.format(DateFormat.java:250)
> 	at org.apache.log4j.helpers.PatternParser$DatePatternConverter.convert(PatternParser.java:444)
> 	at org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:64)
> 	at org.apache.log4j.PatternLayout.format(PatternLayout.java:503)
> 	at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:301)
> 	at org.apache.log4j.RollingFileAppender.subAppend(RollingFileAppender.java:236)
> 	at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)
> 	at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
> 	at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65)
> 	at org.apache.log4j.Category.callAppenders(Category.java:203)
> 	at org.apache.log4j.Category.forcedLog(Category.java:388)
> 	at org.apache.log4j.Category.error(Category.java:319)
> 	at com.ecyrd.jspwiki.util.WikiBackgroundThread.run(WikiBackgroundThread.java:172)
> Small investigation has shown that the cause of NPE is null destination parameter of
StringBuffer.getChars method. The method should throw NPE in this case according to spec.
RI has the same behavior of this method.

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