[jira] [Commented] (LOG4J2-1542) java.lang.ArrayIndexOutOfBoundsException

["Ralph Goers (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-1542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15432835#comment-15432835 ] 

Ralph Goers commented on LOG4J2-1542:
-------------------------------------

If you can provide a patch with a test and a fix that would be awesome.

> java.lang.ArrayIndexOutOfBoundsException
> ----------------------------------------
>
>                 Key: LOG4J2-1542
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1542
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: API
>    Affects Versions: 2.6.2
>         Environment: Array length logic causes throw java.lang.ArrayIndexOutOfBoundsException
>            Reporter: Rogério Lecarião Leite
>            Priority: Critical
>              Labels: easyfix
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> This error is reproducible when method fomarTo of the class ParameterizedMessage is invoked.
> This root cause is the method init of same class where is invoked, in the this.indices is initializaded with messagePattern.length() >> 1 run to equals zero because that messagePattern.length() is 1 (string with one character).
> I used File Appender in my XML config and I wrote my code with logger.trace("a").
> My PatternLayout used is pattern="%m" (simplest).



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