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https://issues.apache.org/jira/browse/PDFBOX-2428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14333611#comment-14333611
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Bernhard Stiftner commented on PDFBOX-2428:
-------------------------------------------

Is there any chance of fixing fontbox before the 2.0 major release? I'm running 
preflight for PDF/A validation over a sample of 45K PDF files. For ~10K 
documents validation fails because of this bug. So I guess it must be a rather 
common problem? My sample of PDF files is nothing unusual - typical office 
documents for the most part.
I did the fork on GitHub, and it works perfectly for my validation job. I 
probably should have gotten involved in the discussion here in the first place 
instead of opening a pull request. I'm sorry for that. Anyway, please consider 
including the patch if you plan yet another 1.8 release.

> An error occured when reading table hmtx
> ----------------------------------------
>
>                 Key: PDFBOX-2428
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2428
>             Project: PDFBox
>          Issue Type: Bug
>          Components: FontBox
>    Affects Versions: 1.8.8, 2.0.0
>            Reporter: simon steiner
>            Assignee: John Hewson
>             Fix For: 2.0.0
>
>         Attachments: ttsubset_pdfa.pdf
>
>
> java -cp 
> pdfbox/preflight/target/preflight-1.8.8-SNAPSHOT.jar:pdfbox/app/target/pdfbox-app-1.8.8-SNAPSHOT.jar:pdfbox/xmpbox/target/xmpbox-1.8.8-SNAPSHOT.jar:lib/commons-io-1.3.1.jar
>  org.apache.pdfbox.preflight.Validator_A1b ttsubset_pdfa.pdf
> SEVERE: An error occured when reading table hmtx
> java.io.EOFException
>       at 
> org.apache.fontbox.ttf.MemoryTTFDataStream.readSignedShort(MemoryTTFDataStream.java:139)



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