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https://issues.apache.org/jira/browse/PDFBOX-2630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14290821#comment-14290821
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Tilman Hausherr edited comment on PDFBOX-2630 at 1/24/15 8:54 PM:
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{quote}The items at each level of the hierarchy form a linked list, chained 
together through their Prev and Next entries and accessed through the First and 
Last entries in the parent item{quote}
I'll write some code that checks whether that linked list is free of any 
"contradictions" and loops.


was (Author: tilman):
{quote}The items at each level of the hierarchy form a linked list, chained 
together through their Prev and Next entries and accessed through the First and 
Last entries in the parent item{quote}
I'll write some code that checks whether that the linked list is free of any 
"contradictions" and loops.

> "loop in destinations" not detected by preflight
> ------------------------------------------------
>
>                 Key: PDFBOX-2630
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2630
>             Project: PDFBox
>          Issue Type: Sub-task
>          Components: Preflight
>    Affects Versions: 1.8.8, 1.8.9, 2.0.0
>            Reporter: Tilman Hausherr
>            Assignee: Tilman Hausherr
>         Attachments: validierung_von_pdfa.pdf
>
>
> The Bavaria testsuite requests to detect "Contains loops in destinations" in 
> the attached file. I'm not sure what they mean, but PDF-Tools detects this 
> and we don't: 
> {quote}
> The value of the key Prev is 212 0 R but must be 0 0 R.
> The value of the key Prev is 214 0 R but must be 0 0 R.
> The value of the key Prev is 215 0 R but must be 214 0 R.
> The value of the key Prev is 213 0 R but must be 212 0 R.
> The value of the key Prev is 217 0 R but must be 0 0 R.
> The value of the key Prev is 218 0 R but must be 217 0 R.
> The value of the key Prev is 219 0 R but must be 218 0 R.
> The value of the key Prev is 216 0 R but must be 213 0 R.
> The value of the key Prev is 220 0 R but must be 216 0 R.
> The value of the key Prev is 222 0 R but must be 0 0 R.
> The value of the key Prev is 223 0 R but must be 222 0 R.
> The value of the key Prev is 224 0 R but must be 223 0 R.
> The value of the key Prev is 221 0 R but must be 220 0 R.
> The value of the key Prev is 226 0 R but must be 0 0 R.
> The value of the key Prev is 225 0 R but must be 221 0 R.
> The value of the key Prev is 211 0 R but must be 0 0 R.
> The value of the key Prev is 210 0 R but must be 0 0 R.
> {quote}



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