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https://issues.apache.org/jira/browse/PDFBOX-2679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14374933#comment-14374933
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ASF subversion and git services commented on PDFBOX-2679:
---------------------------------------------------------
Commit 1668365 from [~lehmi] in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1668365 ]
PDFBOX-2679: Improved object key check to find wrong offsets within the xref
table
> Blank page rendered with wrong xref start objid
> -----------------------------------------------
>
> Key: PDFBOX-2679
> URL: https://issues.apache.org/jira/browse/PDFBOX-2679
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.0
> Reporter: Tilman Hausherr
> Assignee: Andreas Lehmkühler
> Fix For: 2.0.0
>
> Attachments: PDFBOX-2679.patch
>
>
> From Kevin M. on the users mailing list:
> A confidential file doesn't display its image because the objid is
> unaccessible, due to a malformed xref table:
> {code}
> xref
> 1 7
> 0000000000 65535 f
> 0000000009 00000 n
> 0000358745 00000 n
> 0000358842 00000 n
> 0000359029 00000 n
> 0000359087 00000 n
> 0000359138 00000 n
> trailer
> {code}
> The first number (1) means the number of the first object. So it would be 1.
> The second number(7) is the size of the table. The number 1 is incorrect, it
> should be 0, because "0000000000 65535 f" is the dummy object 0.
> From the pdf spec:
> {quote}The free entries in the cross-reference table form a linked list, with
> each free entry containing the object number of the next. The first entry in
> the table (object number 0) is always free and has a generation number of
> 65,535; it is the head of the linked list of free objects {quote}
> The error messages are:
> Can't find the object 7 0 (origin offset 359138)
> Missing XObject: Im1 (Im1 is the object at 7 0, and is the missing image)
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