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https://issues.apache.org/jira/browse/PDFBOX-3743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15953803#comment-15953803
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Tilman Hausherr commented on PDFBOX-3743:
-----------------------------------------
I tried the same with the example code, and it didn't happen. So I wonder what
you did differently...
> Running GC between signing and saving document closes stream
> ------------------------------------------------------------
>
> Key: PDFBOX-3743
> URL: https://issues.apache.org/jira/browse/PDFBOX-3743
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.5
> Environment: Ubuntu 16.04 64-bit, play framework 1.5
> Reporter: Dmitri Ess
>
> Running GC between signing and saving document closes stream and signing
> process fails, e.g.
> try (PDDocument doc = PDDocument.load(unsignedPDF)) {
> doc.addSignature(...);
> System.gc();
> try (FileOutputStream out = new FileOutputStream(outputFile)) {
> doc.saveIncremental(out);
> }
> }
> constantly fails with:
> at org.apache.pdfbox.cos.COSStream.checkClosed(COSStream.java:78)
> at
> org.apache.pdfbox.cos.COSStream.createRawInputStream(COSStream.java:126)
> at
> org.apache.pdfbox.pdfwriter.COSWriter.visitFromStream(COSWriter.java:1177)
> at org.apache.pdfbox.cos.COSStream.accept(COSStream.java:372)
> at org.apache.pdfbox.cos.COSObject.accept(COSObject.java:158)
> at
> org.apache.pdfbox.pdfwriter.COSWriter.doWriteObject(COSWriter.java:561)
> at org.apache.pdfbox.pdfwriter.COSWriter.doWriteBody(COSWriter.java:478)
> at
> org.apache.pdfbox.pdfwriter.COSWriter.visitFromDocument(COSWriter.java:1073)
> at org.apache.pdfbox.cos.COSDocument.accept(COSDocument.java:419)
> at org.apache.pdfbox.pdfwriter.COSWriter.write(COSWriter.java:1331)
> at
> org.apache.pdfbox.pdmodel.PDDocument.saveIncremental(PDDocument.java:1124)
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