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Tilman Hausherr commented on PDFBOX-2008: ----------------------------------------- Although I wonder why you would have a generation number of 65535 (isn't this incremented by one for a new version?), the PDF spec is clear about this: "The maximum generation number is 65,535". > Off-by-one error in BaseParser.readGenerationNumber() > ----------------------------------------------------- > > Key: PDFBOX-2008 > URL: https://issues.apache.org/jira/browse/PDFBOX-2008 > Project: PDFBox > Issue Type: Bug > Affects Versions: 1.8.4 > Reporter: Christian S. > Original Estimate: 0.25h > Remaining Estimate: 0.25h > > wrong: > if(retval < 0 || retval >= GENERATION_NUMBER_THRESHOLD) ... > correct: > if(retval < 0 || retval > GENERATION_NUMBER_THRESHOLD) ... > The method comment describes the correct behavior: > "if the integer value has more than the maximum object revision (i.e. : > bigger than {@link #GENERATION_NUMBER_THRESHOLD}) ..." > This is not a theoretical bug. I've scanned our database of quite a few pdf > documents and found one which were not readable / mergeable by PdfBox: > java.io.IOException: Generation Number '65535' has more than 5 digits > at > org.apache.pdfbox.pdfparser.BaseParser.readGenerationNumber(BaseParser.java:1629) > at org.apache.pdfbox.pdfparser.PDFParser.parseObject(PDFParser.java:574) > at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:194) > at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1219) > at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1186) > at > org.apache.pdfbox.util.PDFMergerUtility.mergeDocuments(PDFMergerUtility.java:191) > -- This message was sent by Atlassian JIRA (v6.2#6252)