Merging files with PdfSmartCopy throws a NullPointerException

Hi, I experienced some random NPE when merging documents using iText 5.5.x
and I managed to create a SSCCE. The exception is triggered only when using
PdfSmartCopy AND consolidateNamedDestinations is called on the reader AND
selectPages is called on the reader.
This is the document I used but it happened with others:
http://open-advice.org/Open-Advice.pdf
To keep the example short I didn't include multiple documents.
I think it is probably a bug but please let me know if there is anything
wrong with the code.

 public static void main(String[] args) throws IOException,
DocumentException {
        File outputFile = File.createTempFile("test", ".pdf");
        RandomAccessSource ras = FACTORY
                .createBestSource("/some-path/Open-Advice.pdf");
        PdfReader reader = new PdfReader(new RandomAccessFileOrArray(ras),
null);
        OutputStream outputStream = new FileOutputStream(outputFile);
        Document pdfDocument = new
Document(reader.getPageSizeWithRotation(1));
        PdfSmartCopy pdfCopy = new PdfSmartCopy(pdfDocument, outputStream);
        pdfDocument.open();
        reader.consolidateNamedDestinations();
        reader.selectPages("1-50");
        pdfCopy.addDocument(reader);
        pdfCopy.freeReader(reader);
        pdfCopy.close();
        reader.close();
        outputStream.close();
        System.out.println("created " + outputFile.getAbsolutePath());
    }

and this is the Stacktrace:

Exception in thread "main" java.lang.NullPointerException
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.serObject(PdfSmartCopy.java:189)
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.serArray(PdfSmartCopy.java:237)
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.serObject(PdfSmartCopy.java:201)
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.serDic(PdfSmartCopy.java:228)
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.serObject(PdfSmartCopy.java:198)
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.serDic(PdfSmartCopy.java:228)
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.serObject(PdfSmartCopy.java:198)
	at
com.itextpdf.text.pdf.PdfSmartCopy$ByteStore.<init>(PdfSmartCopy.java:265)
	at com.itextpdf.text.pdf.PdfSmartCopy.copyIndirect(PdfSmartCopy.java:110)
	at com.itextpdf.text.pdf.PdfCopy.copyObject(PdfCopy.java:577)
	at com.itextpdf.text.pdf.PdfCopy.copyArray(PdfCopy.java:550)
	at com.itextpdf.text.pdf.PdfCopy.copyObject(PdfCopy.java:581)
	at com.itextpdf.text.pdf.PdfCopy.copyDictionary(PdfCopy.java:493)
	at com.itextpdf.text.pdf.PdfCopy.copyDictionary(PdfCopy.java:519)
	at com.itextpdf.text.pdf.PdfCopy.addPage(PdfCopy.java:663)
	at com.itextpdf.text.pdf.PdfSmartCopy.addPage(PdfSmartCopy.java:158)
	at com.itextpdf.text.pdf.PdfCopy.addDocument(PdfCopy.java:814)
	at org.pdfsam.ui.TestIText.main(TestIText.java:54)

Regards,
Andrea



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