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LibPDF: Assert compressed xref's 2nd field is non-zero
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@ -387,6 +387,8 @@ PDFErrorOr<NonnullRefPtr<XRefTable>> DocumentParser::parse_xref_stream()
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auto field_sizes = TRY(dict->get_array(m_document, "W"));
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if (field_sizes->size() != 3)
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return error("Malformed xref dictionary");
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if (field_sizes->at(1).get_u32() == 0)
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return error("Malformed xref dictionary");
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auto highest_object_number = dict->get_value("Size").get<int>() - 1;
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