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https://issues.apache.org/jira/browse/LOG4J2-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17070272#comment-17070272
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Romain Manni-Bucau commented on LOG4J2-2809:
--------------------------------------------
Master works perfectly for me, just awaiting a release :)
> java.lang.NullPointerException at java9
> org.apache.logging.log4j.util.StackLocator.calcLocation()
> --------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-2809
> URL: https://issues.apache.org/jira/browse/LOG4J2-2809
> Project: Log4j 2
> Issue Type: Bug
> Reporter: Andre Elis
> Assignee: Ralph Goers
> Priority: Major
> Fix For: 2.13.2
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> When log() is called from a class using an instance created/stored at
> ThreadLocal
> its StackWalker.StackFrame names changes to
> "WrappingClass$ClassFromThreadLocal".
> This causes NPE because walker.walk(LOCATOR) returns null.
> {code:java}
> StackTraceElement element = walker.walk(LOCATOR).toStackTraceElement();
> {code}
> It is suggested to check the result of walk() for null-ness and react in the
> way different from NPE.
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