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https://issues.apache.org/jira/browse/FOP-2461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15101699#comment-15101699
 ] 

simon steiner commented on FOP-2461:
------------------------------------

Should this be closed

> NullPointerException in ListItemLayoutManager since Temp_BasicSideFloat Merge
> -----------------------------------------------------------------------------
>
>                 Key: FOP-2461
>                 URL: https://issues.apache.org/jira/browse/FOP-2461
>             Project: FOP
>          Issue Type: Bug
>          Components: layout/unqualified
>    Affects Versions: trunk
>            Reporter: Matthias Reischenbacher
>         Attachments: fop-2461-test-case.xml, listNPE.patch
>
>
> The attached fo test cases causes a NullPointerException inside 
> ListItemLayoutManager. This is the stack trace:
> java.lang.NullPointerException
>       at 
> org.apache.fop.layoutmgr.list.ListItemLayoutManager.getCombinedKnuthElementsForListItem(ListItemLayoutManager.java:405)
>       at 
> org.apache.fop.layoutmgr.list.ListItemLayoutManager.getNextKnuthElements(ListItemLayoutManager.java:326)
>       at 
> org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:239)
>       at 
> org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:498)
>       at 
> org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:289)
>       at 
> org.apache.fop.layoutmgr.list.ListBlockLayoutManager.getNextKnuthElements(ListBlockLayoutManager.java:103)
>       at 
> org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:239)
>       at 
> org.apache.fop.layoutmgr.BlockLayoutManager.getNextChildElements(BlockLayoutManager.java:141)
>       at 
> org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:289)
>       at 
> org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:113)
>       at 
> org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:105)
>       at 
> org.apache.fop.layoutmgr.table.TableCellLayoutManager.getNextKnuthElements(TableCellLayoutManager.java:191)
>       at 
> org.apache.fop.layoutmgr.table.RowGroupLayoutManager.createElementsForRowGroup(RowGroupLayoutManager.java:120)
>       at 
> org.apache.fop.layoutmgr.table.RowGroupLayoutManager.getNextKnuthElements(RowGroupLayoutManager.java:63)
>       at 
> org.apache.fop.layoutmgr.table.TableContentLayoutManager.getKnuthElementsForRowIterator(TableContentLayoutManager.java:270)
>       at 
> org.apache.fop.layoutmgr.table.TableContentLayoutManager.getNextKnuthElements(TableContentLayoutManager.java:212)
>       at 
> org.apache.fop.layoutmgr.table.TableLayoutManager.getNextKnuthElements(TableLayoutManager.java:273)
>       at 
> org.apache.fop.layoutmgr.FlowLayoutManager.getNextChildElements(FlowLayoutManager.java:223)
>       at 
> org.apache.fop.layoutmgr.FlowLayoutManager.addChildElements(FlowLayoutManager.java:148)
>       at 
> org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:116)
>       at 
> org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:69)
>       at 
> org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:252)
>       at 
> org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:643)
>       at 
> org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:178)
>       at 
> org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:158)
>       at 
> org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:384)
>       at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112)
>       at 
> org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:135)
>       at 
> org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
>       at 
> org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130)
>       at 
> org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360)
>       at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
>       at 
> org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1101)
>       at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown 
> Source)
>       at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
>       at 
> org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
>       at 
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
>  Source)
>       at 
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
> Source)
>       at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
>       at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
>       at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
>       at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
>       at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown 
> Source)
>       at 
> org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)
>       at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:285)
>       at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
>       at org.apache.fop.cli.Main.startFOP(Main.java:186)
>       at org.apache.fop.cli.Main.main(Main.java:217)



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