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https://issues.apache.org/jira/browse/LOG4J2-234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gerald Kroisandt closed LOG4J2-234.
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I looked at the source code and in my opinion it should work now
> RegexFilter crashes as context-wide filter
> ------------------------------------------
>
> Key: LOG4J2-234
> URL: https://issues.apache.org/jira/browse/LOG4J2-234
> Project: Log4j 2
> Issue Type: Bug
> Components: Filters
> Affects Versions: 2.0-beta5
> Reporter: Gerald Kroisandt
> Assignee: Ralph Goers
> Fix For: 2.0-beta6
>
> Original Estimate: 10m
> Remaining Estimate: 10m
>
> If a RegexFilter is used as a context-wide filter,
> then a call like
> logger.isDebugEnabled()
> leads to a Null-Pointer-Exception, because the RegexFilter is called with the
> message "null".
> The stack-trace (2.0-beta5) is:
> at
> org.apache.logging.log4j.core.filter.RegexFilter.filter(RegexFilter.java:60)
> at
> org.apache.logging.log4j.core.filter.CompositeFilter.filter(CompositeFilter.java:176)
> at
> org.apache.logging.log4j.core.Logger$PrivateConfig.filter(Logger.java:317)
> at org.apache.logging.log4j.core.Logger.isEnabled(Logger.java:128)
> at
> org.apache.logging.log4j.spi.AbstractLogger.isTraceEnabled(AbstractLogger.java:1129)
> In the MarkerFilter is the code
> return marker != null && ...
> i.e. it is only necessary to change line 60 to
> return msg != null && filter(msg.toString)
> in RegexFilter (I do not know how to do this correctly...)
> In line 77, this check is done; in line 66 and 72 the same problem may
> arise...
> Greetings,
> Gerald Kroisandt
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