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https://issues.apache.org/jira/browse/LOG4J2-2998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Volkan Yazici resolved LOG4J2-2998.
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Resolution: Fixed
> JsonWriter truncation doesn't take surrogates into account
> ----------------------------------------------------------
>
> Key: LOG4J2-2998
> URL: https://issues.apache.org/jira/browse/LOG4J2-2998
> Project: Log4j 2
> Issue Type: Bug
> Components: JsonTemplateLayout
> Affects Versions: 2.14.0
> Reporter: Volkan Yazici
> Assignee: Volkan Yazici
> Priority: Major
> Fix For: 2.14.1
>
>
> {{JsonWriter}} of {{JsonTemplateLayout}} works on {{char}}\-by\-{{char}}
> basis, even while truncating excessive input. This approach might leave the
> truncated string in a state such that the last {{char}} (which will be
> followed by {{truncatedStringSuffix}}) might be the high surrogate of a
> surrogate pair. This incomplete {{char}} needs to be removed.
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