Bug#689436: fop: NullPointerException if a docbook anchor element is inside an emphasis element

Tue Oct 2 15:24:35 UTC 2012

Package: fop
Version: 1:1.0.dfsg2-6
Severity: important

Dear maintainer,

I encounter a java.lang.NullPointerException with fop 1:1.0.dfsg2-6
when processing a valid docbook 4.5 file. If an anchor is placed inside an
emphasis element, the produced .fo file will make fop crash.

I attach some sample files showing the problem.

The steps to reproduce the bug are the following:

vincent at hal:~$ /usr/bin/xmllint --postvalid --noout --nonet fop.segv.xml
vincent at hal:~$ echo $?
0
vincent at hal:~$ /usr/bin/xsltproc --stringparam use.extensions 1 --stringparam fop1.extensions 1 --stringparam tablecolumns.extension 0 --stringparam callouts.extension 0 -o /home/vincent/fop.segv.fo /usr/share/xml/docbook/stylesheet/docbook-xsl/fo/docbook.xsl /home/vincent/fop.segv.xml
Making portrait pages on USletter paper (8.5inx11in)
vincent at hal:~$ /usr/bin/fop -c /home/vincent/fop.xconf -fo /home/vincent/fop.segv.fo -pdf /home/vincent/fop.segv.pdf
[warning] /usr/bin/fop: Unable to locate servlet-api in /usr/share/java
Image not found. URI: images/draft.png. (See position 2:9549)
Image not found. URI: images/draft.png. (See position 2:10207)
Image not found. URI: images/draft.png. (See position 2:10863)
Image not found. URI: images/draft.png. (See position 2:11516)
Image not found. URI: images/draft.png. (See position 2:12166)
Image not found. URI: images/draft.png. (See position 2:12816)
Image not found. URI: images/draft.png. (See position 2:13463)
Image not found. URI: images/draft.png. (See position 2:14115)
Image not found. URI: images/draft.png. (See position 2:14767)
Image not found. URI: images/draft.png. (See position 2:15416)
Image not found. URI: images/draft.png. (See position 2:16067)
Image not found. URI: images/draft.png. (See position 2:16718)
Image not found. URI: images/draft.png. (See position 2:17366)
Image not found. URI: images/draft.png. (See position 2:18017)
Image not found. URI: images/draft.png. (See position 2:18668)
Image not found. URI: images/draft.png. (See position 2:19316)
Image not found. URI: images/draft.png. (See position 2:19968)
Image not found. URI: images/draft.png. (See position 2:20620)
Image not found. URI: images/draft.png. (See position 2:21269)
Font "Symbol,normal,700" not found. Substituting with "Symbol,normal,400".
Font "ZapfDingbats,normal,700" not found. Substituting with "ZapfDingbats,normal,400".
Exception
java.lang.NullPointerException

vincent at hal:~$ echo $JAVA_HOME
/usr/lib/jvm/java-6-sun

vincent at hal:~$ apt-cache policy fop
fop:
  Installed: 1:1.0.dfsg2-6
  Candidate: 1:1.0.dfsg2-6
  Version table:
 *** 1:1.0.dfsg2-6 0
         50 http://debian.mirror.evertje.net/debian/ testing/main amd64 Packages
         50 http://ftp.nerim.net/debian/ sid/main amd64 Packages
        100 /var/lib/dpkg/status
     1:1.0.dfsg2-6~bpo60+1 0
        400 http://backports.debian.org/debian-backports/ squeeze-backports/main amd64 Packages
     1:0.95.dfsg-11 0
        500 http://debian.advalem.net/debian/ squeeze/main amd64 Packages
vincent at hal:~$ apt-cache policy xsltproc
xsltproc:
  Installed: 1.1.26-6+squeeze1
  Candidate: 1.1.26-6+squeeze1
  Version table:
     1.1.26-13 0
         50 http://debian.mirror.evertje.net/debian/ testing/main amd64 Packages
         50 http://ftp.nerim.net/debian/ sid/main amd64 Packages
 *** 1.1.26-6+squeeze1 0
        500 http://debian.advalem.net/debian/ squeeze/main amd64 Packages
        100 /var/lib/dpkg/status

I am at your disposal if you require more information.

Best regards.

-- System Information:
Debian Release: 6.0.5
  APT prefers stable
  APT policy: (500, 'stable'), (50, 'unstable'), (50, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-0.bpo.3-amd64 (SMP w/16 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages fop depends on:
ii  default-jre-headl 1:1.6-40               Standard Java or Java compatible R
ii  gcj-4.4-jre-headl 4.4.5-2                Java runtime environment using GIJ
ii  gcj-jre-headless  4:4.4.5-1              Java runtime environment using GIJ
ii  libfop-java       1:1.0.dfsg2-6          XML formatter driven by XSL Format
ii  openjdk-6-jre-hea 6b18-1.8.13-0+squeeze2 OpenJDK Java runtime, using Hotspo
ii  sun-java6-jre [ja 6.26-0squeeze1         Sun Java(TM) Runtime Environment (

Versions of packages fop recommends:
ii  libsaxon-java                 1:6.5.5-6  The Saxon XSLT Processor

Versions of packages fop suggests:
pn  fop-doc                <none>            (no description available)
ii  libservlet2.5-java     6.0.35-1+squeeze2 Servlet 2.5 and JSP 2.1 Java API c

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