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Posted to fop-dev@xmlgraphics.apache.org by "Szőts Ákos (Jira)" <ji...@apache.org> on 2019/11/14 22:53:00 UTC
[jira] [Created] (FOP-2887) java.lang.NullPointerException with
"" at
org.apache.fop.layoutmgr.PageBreaker.redoLayout(PageBreaker.java:453)
Szőts Ákos created FOP-2887:
-------------------------------
Summary: java.lang.NullPointerException with "<fo:float>" at org.apache.fop.layoutmgr.PageBreaker.redoLayout(PageBreaker.java:453)
Key: FOP-2887
URL: https://issues.apache.org/jira/browse/FOP-2887
Project: FOP
Issue Type: Bug
Affects Versions: 2.4
Environment: openSUSE Tumbleweed x64
Reporter: Szőts Ákos
Attachments: topic.fo
The following code snippet (also attached) causes FOP 2.4 to throw a NullPointerException during page layouting.
I tried to create a minimal reproducible example so anything you'd remove semantically correctly will cause the snippet to compile properly.
{code:xml}
<?xml version="1.0" encoding="utf-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master master-name="body-odd">
<fo:region-body/>
</fo:simple-page-master>
<fo:simple-page-master master-name="body-last">
<fo:region-body/>
</fo:simple-page-master>
<fo:page-sequence-master master-name="body-sequence">
<fo:repeatable-page-master-alternatives>
<fo:conditional-page-master-reference master-reference="body-last" page-position="last"/>
<fo:conditional-page-master-reference master-reference="body-odd"/>
</fo:repeatable-page-master-alternatives>
</fo:page-sequence-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="body-sequence">
<fo:flow flow-name="xsl-region-body">
<fo:block>
<fo:float>
<fo:block/>
</fo:float>
</fo:block>
<fo:block/>
</fo:flow>
</fo:page-sequence>
</fo:root>
{code}
Exception thrown:
{code:java}
SEVERE: Exception
org.apache.fop.apps.FOPException: java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:296)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:116)
at org.apache.fop.cli.Main.startFOP(Main.java:183)
at org.apache.fop.cli.Main.main(Main.java:214)
Caused by: java.lang.NullPointerException
at org.apache.fop.layoutmgr.PageBreaker.redoLayout(PageBreaker.java:453)
at org.apache.fop.layoutmgr.PageBreaker.doPhase3(PageBreaker.java:333)
at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:458)
at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112)
at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:143)
at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:139)
at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:362)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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$JAXPSAXParser.parse(Unknown Source)
at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:293)
... 3 more
---------
java.lang.NullPointerException
at org.apache.fop.layoutmgr.PageBreaker.redoLayout(PageBreaker.java:453)
at org.apache.fop.layoutmgr.PageBreaker.doPhase3(PageBreaker.java:333)
at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:458)
at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112)
at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:143)
at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:139)
at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:362)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
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:485)
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:293)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:116)
at org.apache.fop.cli.Main.startFOP(Main.java:183)
at org.apache.fop.cli.Main.main(Main.java:214)
{code}
Command line I used to compile:
{{fop-2.4/fop/fop <snippet above.fo> <output.pdf>}}
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