Bernhard Fey created PDFBOX-6036:
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Summary: StackOverflowError in COSWriterCompressionPool for large
number of bookmarks
Key: PDFBOX-6036
URL: https://issues.apache.org/jira/browse/PDFBOX-6036
Project: PDFBox
Issue Type: Bug
Affects Versions: 3.0.5 PDFBox
Reporter: Bernhard Fey
Saving a document containing thousands of bookmarks causes a
{{StackOverflowError}} in {{{}COSWriterCompressionPool{}}}.
The stack trace alternates between the following two methods:
{code:java}
at
org.apache.pdfbox.pdfwriter.compress.COSWriterCompressionPool.addStructure(COSWriterCompressionPool.java:190)
at
org.apache.pdfbox.pdfwriter.compress.COSWriterCompressionPool.addElements(COSWriterCompressionPool.java:204)
{code}
You can replicate the issue with the following class:
{code:java}
public class StackOverflBookm {
public static void main(String[] args) {
for (int i = 1; i <= 1_111_111; i *= 2) {
System.out.println(new java.text.DecimalFormat("#,###").format(i));
try (org.apache.pdfbox.pdmodel.PDDocument document = new
org.apache.pdfbox.pdmodel.PDDocument()) {
org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDDocumentOutline
outline =
new
org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDDocumentOutline();
document.getDocumentCatalog().setDocumentOutline(outline);
for (int j = 0; j < i; j++) {
outline.addLast(new
org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineItem());
}
document.save(new java.io.ByteArrayOutputStream(),
org.apache.pdfbox.pdfwriter.compress.CompressParameters.DEFAULT_COMPRESSION);
// NO_COMPRESSION avoids the Error
} catch (Throwable e) {
e.printStackTrace(System.out);
return;
}
}
}
}{code}
Without compression it will create documents with up to over a million
bookmarks (assuming sufficient heap size, 1 gigabyte is enough).
But with the default compression the StackOverflowError will be thrown (on my
Windows VMs, with a default stack size of about 1 megabyte, before reaching ten
thousand bookmarks).
Apparently the recursion depth of the two methods grows with the amount of
bookmarks, until the Error is thrown.
I have chosen the priority Critical, because an {{Error}} is thrown and, unlike
Exceptions, likely not handled in integrations.
Additionally, most integrations likely use the {{save}} methods without the
second parameter, getting compression enabled by default.
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