[PDFBOX-2198] ClassCastException in COSArrayList.convertIntegerCOSArrayToList for font widths

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.6, 1.8.7, 2.0.0
• Fix Version/s: 1.8.7, 2.0.0
• Component/s: Parsing
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 09/Jul/14 19:06
• Updated: 19/Sep/14 14:40
• Resolved: 09/Jul/14 19:35

Description

I get this with the attached file:

java.lang.ClassCastException: org.apache.pdfbox.cos.COSObject cannot be cast to org.apache.pdfbox.cos.COSNumber
        at org.apache.pdfbox.pdmodel.common.COSArrayList.convertIntegerCOSArrayToList(COSArrayList.java:278)
        at org.apache.pdfbox.pdmodel.font.PDFont.getWidths(PDFont.java:739)
        at org.apache.pdfbox.pdmodel.font.PDFont.getFontWidth(PDFont.java:805)
        at org.apache.pdfbox.pdmodel.font.PDFont.getFontWidth(PDFont.java:312)
        at org.apache.pdfbox.util.PDFStreamEngine.processText(PDFStreamEngine.java

The cause is this:

22 0 obj
[ 583 536 ...... 694 23 0 R 875 708 ...... ]
endobj
23 0 obj
542
endobj

The indirect reference looks stupid, but isn't forbidden. The spec just mentions that there must be an array of widths.