bernhardf-ro commented on code in PR #149:
URL: https://github.com/apache/pdfbox/pull/149#discussion_r1069164981


##########
pdfbox/src/main/java/org/apache/pdfbox/multipdf/PDFMergerUtility.java:
##########
@@ -1498,8 +1499,8 @@ private void updateStructParentEntries(PDPage page, int 
structParentOffset) thro
         List<PDAnnotation> newannots = new ArrayList<>(annots.size());
         annots.forEach(annot ->
         {
-            int structParent = annot.getStructParent();
-            if (structParent >= 0)
+            int structParent = 
annot.getCOSObject().getInt(COSName.STRUCT_PARENT, Integer.MIN_VALUE); // allow 
for negative struct parent values

Review Comment:
   I intentionally kept the patch to one class and as simple and minimal as 
possible, e.g. not renaming variables. So feel free to adapt it and let me know 
if you have any questions.



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