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Bug#570095: java.lang.NullPointerException: at org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.applyChanges(InlineStackingLayoutManager.java:350)

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Mathieu Malaterre

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Feb 16, 2010, 8:30:02 AM2/16/10

Package: fop
Version: 1:0.95.dfsg-7
Severity: important

fop currently segfault on a very simple docbook file:

consider the following test.xml file:

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" []>
<article>
<section>
<title>title</title>
<para>
<anchor id="myidx" xreflabel="mylabel"/>
</para>
</section>
</article>

Now run:

$ xsltproc --stringparam fop1.extensions 1 --stringparam ulink.show 0
--xinclude -o out.fo
/usr/share/xml/docbook/stylesheet/nwalsh/fo/docbook.xsl ./test.xml

$ fop -fo out.fo -pdf out.pdf

You should get:

[warning] /usr/bin/fop: Unable to locate xml-apis in /usr/share/java
Feb 16, 2010 2:17:27 PM org.apache.fop.fonts.FontInfo notifyFontReplacement
WARNING: Font 'Symbol,normal,700' not found. Substituting with 'Symbol,normal,400'.
Feb 16, 2010 2:17:27 PM org.apache.fop.fonts.FontInfo notifyFontReplacement
WARNING: Font 'ZapfDingbats,normal,700' not found. Substituting with 'ZapfDingbats,normal,400'.
Feb 16, 2010 2:17:27 PM org.apache.fop.cli.Main startFOP
SEVERE: Exception
java.lang.NullPointerException
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:217)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:125)
at org.apache.fop.cli.Main.startFOP(Main.java:166)
at org.apache.fop.cli.Main.main(Main.java:197)

---------

java.lang.NullPointerException
at org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.applyChanges(InlineStackingLayoutManager.java:350)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.findHyphenationPoints(LineLayoutManager.java:1480)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.findOptimalBreakingPoints(LineLayoutManager.java:950)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.createLineBreaks(LineLayoutManager.java:917)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.getNextKnuthElements(LineLayoutManager.java:607)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:294)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:116)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:294)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:116)
at org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:107)
at org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:145)
at org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:552)
at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:137)
at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:302)
at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:264)
at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:106)
at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:234)
at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:123)
at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:340)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:169)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:214)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:125)
at org.apache.fop.cli.Main.startFOP(Main.java:166)
at org.apache.fop.cli.Main.main(Main.java:197)

Thanks

-- System Information:
Debian Release: 5.0.4
APT prefers stable
APT policy: (500, 'stable'), (200, 'testing'), (100, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.30-bpo.1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages fop depends on:
ii default-jre [java2-runti 1.5-30 Standard Java or Java compatible R
ii default-jre-headless 1.5-30 Standard Java or Java compatible R
ii gcj-4.4-jre [java2-runti 4.4.2-4 Java runtime environment using GIJ
ii gcj-jre [java2-runtime] 4:4.3.4-1 Java runtime environment using GIJ
ii java-gcj-compat [java2-r 1.0.80-5.1 Java runtime environment using GIJ
ii java-wrappers 0.1.15 wrappers for java executables
ii libavalon-framework-java 4.2.0-4 Common framework for Java server a
ii libbatik-java 1.7-5 xml.apache.org SVG Library
ii libbsf-java 1:2.4.0-2 Bean Scripting Framework to suppor
ii libcommons-io-java 1.4-1 Common useful IO related classes
ii libcommons-logging-java 1.1.1-6 commmon wrapper interface for seve
ii libxalan2-java 2.7.1-5 XSL Transformations (XSLT) process
ii libxerces2-java 2.9.1-2+lenny1 Validating XML parser for Java wit
ii libxml-commons-external- 1.3.05-1 XML Commons external code - DOM, S
ii libxmlgraphics-commons-j 1.3.1.dfsg-4 reusable components used by Batik
ii libxp6 1:1.0.0.xsf1-2 X Printing Extension (Xprint) clie
ii libxt6 1:1.0.5-3 X11 toolkit intrinsics library
ii libxtst6 2:1.0.3-1 X11 Testing -- Resource extension
ii openjdk-6-jre [java2-run 6b11-9.1+lenny2 OpenJDK Java runtime, using Hotspo
ii sun-java5-jre [java2-run 1.5.0-17-0.1 Sun Java(TM) Runtime Environment (
ii sun-java6-jre [java2-run 6-12-1 Sun Java(TM) Runtime Environment (

Versions of packages fop recommends:
ii libsaxon-java 1:6.5.5-5 The Saxon XSLT Processor

Versions of packages fop suggests:
ii fop-doc 1:0.95.dfsg-7 Documentation for fop
ii libservlet2.4-java 5.0.30-8 Servlet 2.4 and JSP 2.0 Java class

-- no debconf information

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Mathieu Malaterre

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Feb 16, 2010, 8:40:02 AM2/16/10

I can reproduce it also in my sid chroot system:

# xmlto pdf test.xml
Making portrait pages on a4 paper (210mmx297mm)
PassiveTeX is needed for this format, but it is not installed. Please install
the passivetex package.
gotlib# xmlto --with-fop pdf test.xml
Making portrait pages on a4 paper (210mmx297mm)
[warning] /usr/bin/fop: Unable to locate servlet-api in /usr/share/java
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:01 PM
org.apache.fop.fo.properties.CommonBorderPaddingBackground <init>
SEVERE: Background image not available: images/draft.png
Feb 16, 2010 1:26:02 PM org.apache.fop.fonts.FontInfo notifyFontReplacement

WARNING: Font 'Symbol,normal,700' not found. Substituting with
'Symbol,normal,400'.

Feb 16, 2010 1:26:02 PM org.apache.fop.fonts.FontInfo notifyFontReplacement

WARNING: Font 'ZapfDingbats,normal,700' not found. Substituting with
'ZapfDingbats,normal,400'.

Feb 16, 2010 1:26:02 PM org.apache.fop.hyphenation.Hyphenator getHyphenationTree
SEVERE: Couldn't find hyphenation pattern en
Feb 16, 2010 1:26:02 PM org.apache.fop.cli.Main startFOP

---------

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Daniel Leidert

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Feb 16, 2010, 7:00:02 PM2/16/10

Am Dienstag, den 16.02.2010, 14:21 +0100 schrieb Mathieu Malaterre:

[..]

> [warning] /usr/bin/fop: Unable to locate xml-apis in /usr/share/java

^^^^^^^^

Missing (a dependency on) libjaxp1.3-java?

Regards, Daniel

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Mathieu Malaterre

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Feb 17, 2010, 3:30:02 AM2/17/10

On Wed, Feb 17, 2010 at 12:51 AM, Daniel Leidert <daniel....@wgdd.de> wrote:
> Am Dienstag, den 16.02.2010, 14:21 +0100 schrieb Mathieu Malaterre:
>
> [..]
>> [warning] /usr/bin/fop: Unable to locate xml-apis in /usr/share/java
> ^^^^^^^^
>
> Missing (a dependency on) libjaxp1.3-java?

Ah ! Thanks for the info, it does not change anything to the output
but now my testing env is equivalent to my sid-chroot.

How about this one:

# fop -fo out.fo -pdf out.pdf
[warning] /usr/bin/fop: Unable to locate servlet-api in /usr/share/java

In one shot within a sid-chroot system:

# fop -xml test.xml -xsl
/usr/share/xml/docbook/stylesheet/nwalsh/fo/docbook.xsl -pdf out.pdf
[warning] /usr/bin/fop: Unable to locate servlet-api in /usr/share/java
Feb 17, 2010 8:20:09 AM org.apache.fop.cli.InputHandler warning
WARNING: Making portrait pages on USletter paper (8.5inx11in)
Feb 17, 2010 8:20:09 AM