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https://issues.apache.org/jira/browse/LUCENE-7956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153548#comment-16153548
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Adrien Grand commented on LUCENE-7956:
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Very good point. I'll fix when committing. Thanks for having a look!
> ICUNormalizer2CharFilter may fail with a StackOverFlow error
> ------------------------------------------------------------
>
> Key: LUCENE-7956
> URL: https://issues.apache.org/jira/browse/LUCENE-7956
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-7956.patch
>
>
> ICUNormalizer2CharFilter recursively fills up a buffer of 128 chars until the
> last char is neither a surrogate nor inert. On large inputs of non inert
> characters, this can cause a stack overflow error.
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