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https://issues.apache.org/jira/browse/PDFBOX-6132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18047428#comment-18047428
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Andreas Lehmkühler commented on PDFBOX-6132:
--------------------------------------------
If such a pdf exists, it has to be somehow special or better broken. Maybe our
code has an issue as well, so that such a special pdf lead to the described
issue, instead of throwing an exception or "repairing" the broken part.
> NullPointerException in `COSDocument.getLinearizedDictionary()` when
> xrefTable contains null key
> ------------------------------------------------------------------------------------------------
>
> Key: PDFBOX-6132
> URL: https://issues.apache.org/jira/browse/PDFBOX-6132
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.35, 3.0.6 PDFBox
> Reporter: Tilman Hausherr
> Priority: Major
> Fix For: 2.0.36, 3.0.7 PDFBox, 4.0.0
>
>
> Posted by Haoran Yan on the users mailing list:
> NullPointerException (NPE) in COSDocument. Specifically, when a
> cross-reference table (xrefTable) containing a null key is added via
> addXRefTable(), calling getLinearizedDictionary() results in an unhandled NPE
> at line 219 of COSDocument.java.
> Reproduce:
> Run the following test case:
> {code:java}
> public class TestClass {
> @Test
> public void test() {
> COSDocument document = new COSDocument();
> Map<COSObjectKey, Long> xrefTable = new HashMap<>();
> xrefTable.put(null, 10L);
> document.addXRefTable(xrefTable);
> document.getLinearizedDictionary();
> }
> }
> {code}
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