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https://issues.apache.org/jira/browse/PDFBOX-6162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18075096#comment-18075096
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ASF subversion and git services commented on PDFBOX-6162:
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Commit b1223d8a3d97f40c4d87259a0eeebe47c935c30f in pdfbox-jbig2's branch
refs/heads/master from Maruan Sahyoun
[ https://gitbox.apache.org/repos/asf?p=pdfbox-jbig2.git;h=b1223d8 ]
PDFBOX-6162: decode to use local PREV state and enforce explicit 9-bit context
masking per JBIG2 spec
> Reuse of symbols not properly supported
> ---------------------------------------
>
> Key: PDFBOX-6162
> URL: https://issues.apache.org/jira/browse/PDFBOX-6162
> Project: PDFBox
> Issue Type: Sub-task
> Components: JBIG2
> Affects Versions: 3.0.4 JBIG2
> Reporter: Tilman Hausherr
> Priority: Major
> Attachments: bitmap-symbol-context-reuse.pdf
>
>
> .ArrayIndexOutOfBoundsException: Index 2 out of bounds for length 2
> at
> org.apache.pdfbox.jbig2.segments.SymbolDictionary.getToExportFlags(SymbolDictionary.java:898)
> at
> org.apache.pdfbox.jbig2.segments.SymbolDictionary.getDictionary(SymbolDictionary.java:467)
> at
> org.apache.pdfbox.jbig2.segments.SymbolDictionary.retrieveImportSymbols(SymbolDictionary.java:990)
> at
> org.apache.pdfbox.jbig2.segments.SymbolDictionary.setInSyms(SymbolDictionary.java:267)
> at
> org.apache.pdfbox.jbig2.segments.SymbolDictionary.parseHeader(SymbolDictionary.java:130)
> at
> org.apache.pdfbox.jbig2.segments.SymbolDictionary.init(SymbolDictionary.java:1025)
> at
> org.apache.pdfbox.jbig2.SegmentHeader.getSegmentData(SegmentHeader.java:380)
> Considering the name of the file, I assume this means we don't support the
> reuse of symbols correctly. The file has at least 4 different symbol
> segments. From what I see on
> https://github.com/SerenityOS/serenity/blob/master/Tests/LibGfx/test-inputs/jbig2/json/bitmap-symbol-context-reuse.json
> the text segment refers to the symbols of the 4 previous symbol segments, and
> the symbol segments indicate some logic to retain the symbols of previous
> segments, so one will have to investigate what happens.
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