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https://issues.apache.org/jira/browse/LOG4J2-2320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16441392#comment-16441392
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Gary Gregory commented on LOG4J2-2320:
--------------------------------------

Bah, a null message format is worth mentioning. Never mind.

> AbstractLogger NPE hides actual cause when getFormat returns null
> -----------------------------------------------------------------
>
>                 Key: LOG4J2-2320
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2320
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.11.0
>            Reporter: Carter Kozak
>            Assignee: Carter Kozak
>            Priority: Major
>             Fix For: 3.0.0
>
>
> NPE on Message.getFormat().length()
> {noformat}
> java.lang.NullPointerException: null
>         at 
> org.apache.logging.log4j.spi.AbstractLogger.handleLogMessageException(AbstractLogger.java:2184)
>  ~[log4j-api-2.11.0.jar:2.11.0]
>         at 
> org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2173)
>  ~[log4j-api-2.11.0.jar:2.11.0]
>         at 
> org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2125)
>  ~[log4j-api-2.11.0.jar:2.11.0]
>         at 
> org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2108)
>  ~[log4j-api-2.11.0.jar:2.11.0]
>         at 
> org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1827)
>  ~[log4j-api-2.11.0.jar:2.11.0]
>         at 
> org.apache.logging.log4j.spi.AbstractLogger.trace(AbstractLogger.java:2272) 
> ~[log4j-api-2.11.0.jar:2.11.0]{noformat}



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