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Posted to dev@ant.apache.org by bu...@apache.org on 2004/03/02 18:14:59 UTC
DO NOT REPLY [Bug 27373] New: -
NPE when running commons listener against log4J1.2.8
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=27373
NPE when running commons listener against log4J1.2.8
Summary: NPE when running commons listener against log4J1.2.8
Product: Ant
Version: 1.7Alpha (nightly)
Platform: Other
OS/Version: Other
Status: NEW
Severity: Normal
Priority: Other
Component: Other
AssignedTo: dev@ant.apache.org
ReportedBy: stevel@apache.org
This is actually an example in erik and my book; we should have regression
tested it.
1. Take a build file
<project default="fail">
<target name="fail">
<echo message="Hola" />
</target>
</project>
2. run it with the listener:
ant -listener org.apache.tools.ant.listener.CommonsLoggingListener
3. observer the failure
BUILD FAILED
java.lang.NullPointerException
at org.apache.log4j.helpers.LogLog.error(LogLog.java:120)
at org.apache.log4j.Category.callAppenders(Category.java:264)
at org.apache.log4j.Category.forcedLog(Category.java:445)
at org.apache.log4j.Category.info(Category.java:704)
at org.apache.commons.logging.impl.Log4JCategoryLog.info(Log4JCategoryLog.java:148)
at
org.apache.tools.ant.listener.CommonsLoggingListener.realLog(CommonsLoggingListener.java:264)
at
org.apache.tools.ant.listener.CommonsLoggingListener.buildStarted(CommonsLoggingListener.java:103)
at org.apache.tools.ant.Project.fireBuildStarted(Project.java:1781)
at org.apache.tools.ant.Main.runBuild(Main.java:622)
at org.apache.tools.ant.Main.startAnt(Main.java:188)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:197)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:56)
4. Line #120 of LogLog is
System.err.println(ERR_PREFIX+msg);
The problem is that the system.err error is not defined yet. Which is odd, as
that is just what the setup code is meant to do;
I am very confused by this, as I dont see on a look at the listener setup how we
can get a null system.err unless it is not assigned. We may want some extra
hooks and checks in the listener to catch this null-value state before handing
off to log4j, though a bug fix would be better.
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