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Posted to dev@tomcat.apache.org by bu...@apache.org on 2015/01/27 14:17:52 UTC
[Bug 57504] New: Jasper task (JspC) throws NPE on taglibs in 7.0.58
https://issues.apache.org/bugzilla/show_bug.cgi?id=57504
Bug ID: 57504
Summary: Jasper task (JspC) throws NPE on taglibs in 7.0.58
Product: Tomcat 7
Version: trunk
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Jasper
Assignee: dev@tomcat.apache.org
Reporter: msterner@gmail.com
Created attachment 32400
--> https://issues.apache.org/bugzilla/attachment.cgi?id=32400&action=edit
Repeat build.xml
It seems like revision 1645615 broke the ant jasper task in 7.0.58 for taglibs.
Repeat:
1) Download and unzip apache-tomcat-7.0.58.zip and apache-ant-1.9.4-bin.zip to
a temporary directory.
2) Put the following into a new file build.xml in the directory: (attached,
based on
http://tomcat.apache.org/tomcat-7.0-doc/jasper-howto.html#Web_Application_Compilation)
<project>
<import file="apache-tomcat-7.0.58/bin/catalina-tasks.xml"/>
<target name="jspc">
<jasper
validateXml="false"
uriroot="apache-tomcat-7.0.58/webapps/examples"
webXmlFragment="tmp/WEB-INF/generated_web.xml"
outputDir="tmp/WEB-INF/src" />
</target>
</project>
3) Execute "apache-ant-1.9.4/bin/ant jspc" in the directory.
Expected result:
Compiled output in tmp/WEB-INF
Actual result:
Exception is thrown and only partial output to tmp/WEB-INF:
jspc:
[jasper] java.lang.NullPointerException
[jasper] at
org.apache.jasper.JspCompilationContext.getTldLocation(JspCompilationContext.java:618)
[jasper] at
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:409)
[jasper] at
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:475)
[jasper] at
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1410)
[jasper] at org.apache.jasper.compiler.Parser.parse(Parser.java:138)
[jasper] at
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:242)
[jasper] at
org.apache.jasper.compiler.ParserController.parse(ParserController.java:102)
[jasper] at
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
[jasper] at
org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)
[jasper] at org.apache.jasper.JspC.processFile(JspC.java:1213)
[jasper] at org.apache.jasper.JspC.execute(JspC.java:1364)
[jasper] at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)
[jasper] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[jasper] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[jasper] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[jasper] at java.lang.reflect.Method.invoke(Method.java:606)
[jasper] at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[jasper] at org.apache.tools.ant.Task.perform(Task.java:348)
[jasper] at org.apache.tools.ant.Target.execute(Target.java:435)
[jasper] at org.apache.tools.ant.Target.performTasks(Target.java:456)
[jasper] at
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393)
[jasper] at
org.apache.tools.ant.Project.executeTarget(Project.java:1364)
[jasper] at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[jasper] at
org.apache.tools.ant.Project.executeTargets(Project.java:1248)
[jasper] at org.apache.tools.ant.Main.runBuild(Main.java:851)
[jasper] at org.apache.tools.ant.Main.startAnt(Main.java:235)
[jasper] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
[jasper] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
If 7.0.58 is replaced by 7.0.57 then the repeat runs without any exception and
with complete output.
The problem seems to be the cleanup of the tldLocationsCache initialization in
revision 1645615, partially backported from revision 1541041, since it's still
used by JspCompilationContext.getTldLocation.
Possibly the fix is as easy as bringing back the initialization line.
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[Bug 57504] Jasper task (JspC) throws NPE on taglibs in 7.0.58
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=57504
Jeremy Boynes <jb...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
OS| |All
--- Comment #2 from Jeremy Boynes <jb...@apache.org> ---
Patch applied in http://svn.apache.org/viewvc?view=revision&revision=1655089
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[Bug 57504] Jasper task (JspC) throws NPE on taglibs in 7.0.58
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=57504
--- Comment #1 from Jeremy Boynes <jb...@apache.org> ---
Created attachment 32401
--> https://issues.apache.org/bugzilla/attachment.cgi?id=32401&action=edit
Patch to initialize tldLocationsCache
I have verified this using tc7.0.x branch.
The attached patch prevents this error but I've not fully investigated the
consequences.
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