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https://issues.apache.org/jira/browse/PDFBOX-3942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187087#comment-16187087
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ASF subversion and git services commented on PDFBOX-3942:
---------------------------------------------------------
Commit 1810205 from [~tilman] in branch 'pdfbox/branches/1.8'
[ https://svn.apache.org/r1810205 ]
PDFBOX-3942: avoid ClassCastException, as suggested by Vlad-Tudor Marchis; add
test
> ClassCastException in getOptionalContentGroups
> ----------------------------------------------
>
> Key: PDFBOX-3942
> URL: https://issues.apache.org/jira/browse/PDFBOX-3942
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 1.8.13, 2.0.6, 2.0.7
> Reporter: Vlad-Tudor Marchis
> Assignee: Tilman Hausherr
> Priority: Minor
> Labels: support
> Fix For: 1.8.14, 2.0.8, 3.0.0
>
> Attachments: PDOptionalContentProperties.java
>
>
> I noticed this issue when trying to remove a set of layers I previously added
> on a multi-page PDF. I noticed it in version 2.0.6, but might be present in
> others.
> Here is a stacktrace snippet:
> Caused by: java.lang.ClassCastException: org.apache.pdfbox.cos.COSDictionary
> cannot be cast to org.apache.pdfbox.cos.COSObject
> at
> org.apache.pdfbox.pdmodel.graphics.optionalcontent.PDOptionalContentProperties.getOptionalContentGroups(PDOptionalContentProperties.java:180).
> I looked at the source and saw the toDictionary method that seemed to be used
> in every other place so I just put in in place and it seems to have solved
> the issue.
> I've uploaded the updated file, the one that I'm using, which you can review
> and include in your project if it's a valid fix.
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