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https://issues.apache.org/jira/browse/PDFBOX-808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12906986#action_12906986
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Jukka Zitting commented on PDFBOX-808:
--------------------------------------
Thanks for the attachment! I debugged the parsing process and found out that
the font file uses glyph name indexes in the reserved range from 32768 to 65535
(see version 2.0 in http://www.microsoft.com/typography/otspec/post.htm). The
parsing algorithm in FontBox was not prepared to handle such reserved glyph
name indexes, which is why it ended up trying to read past the end of the font
file. I fixed that in revision 993541 by making the parser explicitly ignore
such reserved glyph name indexes.
> PDTrueTypeFont.loadTTF() freezes (at TTFDataStream.java:195)
> ------------------------------------------------------------
>
> Key: PDFBOX-808
> URL: https://issues.apache.org/jira/browse/PDFBOX-808
> Project: PDFBox
> Issue Type: Bug
> Components: FontBox
> Affects Versions: 1.2.1
> Environment: PDFBox 1.2.1, JDK 1.6.0_21, Windows XP 32 Bit.
> Reporter: Martin Hilpert
> Assignee: Jukka Zitting
> Priority: Critical
> Fix For: 1.3.0
>
> Attachments: nbrm____.zip
>
>
> Sometimes (not always), my app "freezes". When I look into jVisualVM thread
> dump, I see this stack trace:
> java.lang.Thread.State: RUNNABLE
> at org.apache.fontbox.ttf.TTFDataStream.read(TTFDataStream.java:195)
> at
> org.apache.fontbox.ttf.TTFDataStream.readString(TTFDataStream.java:69)
> at
> org.apache.fontbox.ttf.TTFDataStream.readString(TTFDataStream.java:57)
> at
> org.apache.fontbox.ttf.PostScriptTable.initData(PostScriptTable.java:104)
> at org.apache.fontbox.ttf.TTFParser.parseTTF(TTFParser.java:140)
> at org.apache.fontbox.ttf.TTFParser.parseTTF(TTFParser.java:87)
> at
> org.apache.pdfbox.pdmodel.font.PDTrueTypeFont.loadDescriptorDictionary(PDTrueTypeFont.java:206)
> at
> org.apache.pdfbox.pdmodel.font.PDTrueTypeFont.loadTTF(PDTrueTypeFont.java:167)
> at
> org.apache.pdfbox.pdmodel.font.PDTrueTypeFont.loadTTF(PDTrueTypeFont.java:143)
> at
> org.apache.pdfbox.pdmodel.font.PDTrueTypeFont.loadTTF(PDTrueTypeFont.java:130)
> It never returns and blocks the application from continuing. This hapend
> several times now every few hours.
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