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https://issues.apache.org/jira/browse/PDFBOX-5022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17236581#comment-17236581
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Tilman Hausherr edited comment on PDFBOX-5022 at 11/21/20, 4:36 AM:
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It was a "Form XObject", these are segments with PDF operations. And it was
calling another Form XObject. Transparency groups are a special case of Form
XObjects.
Re ignore: Not "easily". One could create a modified DrawObject class that does
not call showTransparencyGroup(), and subclass PageDrawer so that this modified
DrawObject class is registered. Or modify the PDF prior to rendering to remove
the /Group entry everywhere. (See also PDFBOX-4123)
was (Author: tilman):
It was a "Form XObject", these are segments with PDF operations. And it was
calling another Form XObject. Transparency groups are a special case of Form
XObjects.
Re ignore: Not "easily". One could create a modified DrawObject class that does
not call showTransparencyGroup(), and subclass PageDrawer so that this modified
DrawObject class is registered. Or modify the PDF prior to rendering to remove
the /Group entry everywhere.
> Recursion is too deep
> ---------------------
>
> Key: PDFBOX-5022
> URL: https://issues.apache.org/jira/browse/PDFBOX-5022
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.21
> Reporter: Tres Finocchiaro
> Priority: Major
> Attachments: crash_pdf.pdf
>
>
> *OS:* Windows 10 x86_64
> *Java:* 1.8.0u271 x86_64
> The attached A4 PDF is created with TCPDF 6.2.26.
> * At 600dpi, the attached PDF prints over > 4GB (-Xmx4096m) heap and crashes
> the JVM.
> * At 300dpi, the attached PDF prints under 2GB (-Xmx2048m) heap but shows
> the following warning(s).
> Google Chrome and Adobe can print this PDF without issue. The crash only
> occurs using PDFBOX.
> * Calling "*PDFDebugger*" does NOT crash the JVM.
> * Calling "*PrintPDF*" DOES crash the JVM.
> For reference, the public mailing list where this was reported:
> [https://groups.google.com/g/qz-print/c/REV9fP3rqeM/m/OW1Gf2QZBQAJ]
>
> {code:java}
> Nov 19, 2020 10:53:46 PM
> org.apache.pdfbox.contentstream.operator.graphics.DrawObject process
> SCHWERWIEGEND: recursion is too deep, skipping form XObject
> Nov 19, 2020 10:53:46 PM
> org.apache.pdfbox.contentstream.operator.graphics.DrawObject process
> SCHWERWIEGEND: recursion is too deep, skipping form XObject
> Nov 19, 2020 10:53:47 PM
> org.apache.pdfbox.contentstream.operator.graphics.DrawObject process
> SCHWERWIEGEND: recursion is too deep, skipping form XObject{code}
>
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