[jira] [Updated] (LOG4J2-1500) Merging configurations fail with an NPE when comparing Nodes with different attributes

["Gary Gregory (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-1500?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary Gregory updated LOG4J2-1500:
---------------------------------
    Summary: Merging configurations fail with an NPE when comparing Nodes with different attributes  (was: Merging configurations fail when comparing Nodes with different attributes)

> Merging configurations fail with an NPE when comparing Nodes with different attributes
> --------------------------------------------------------------------------------------
>
>                 Key: LOG4J2-1500
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1500
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Configurators
>    Affects Versions: 2.6.2
>            Reporter: Jose Leon
>
> When you pass two configurations and there are different Nodes in the Root logger a NPE gets thrown.
> Example stub configuration 1
> {code:xml}
> <Loggers>
>   <Root level="...">
>     <AppenderRef ref="STDOUT">
>     <Property name="hostname">server1</Property>
>   </Root>
> </Loggers>
> {code}
> Example stub configuration 2
> {code:xml}
> <Loggers>
>   <Root level="...">
>     <AppenderRef ref="STDOUT">
>     <AppenderRef ref="File">
>   </Root>
> </Loggers>
> {code}
> Failure happens because DefaultMergeStrategy.isSameName() and isSameReference() calls get() without checking for null.



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