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https://issues.apache.org/jira/browse/PDFBOX-4550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler resolved PDFBOX-4550.
----------------------------------------
    Resolution: Fixed

Hopefully the last iteration cycle ;-)

Thanks again [~tilman] 



> Poor performance with corrupt ToUnicode stream
> ----------------------------------------------
>
>                 Key: PDFBOX-4550
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4550
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering, Text extraction
>    Affects Versions: 2.0.15
>            Reporter: Tilman Hausherr
>            Assignee: Andreas Lehmkühler
>            Priority: Major
>             Fix For: 2.0.16, 3.0.0 PDFBox
>
>         Attachments: 169997-p1.pdf, EF6E2XR2XAXWUHZV5STGMYPWNNDLXDDT-p2.pdf, 
> PDFBOX-3442-DirectResources.pdf, PDFBOX-3442-DirectResources_unc.pdf, 
> PDFBOX-4550-LG5S35JUXSEH5XJC6QYISY3OBUXCKAKR-p1-reduced.pdf, pdnekz1gvl7.pdf
>
>
> A confidential file with lots of corrupt streams has ToUnicode stream with 
> corrupt contents in the beginbfrange segment where start and end have 
> different lengths. This leads to poor performance. Such entries can be 
> skipped.



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