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From: bugzilla@apache.org
To: ant-dev@jakarta.apache.org
Cc: 
Subject: DO NOT REPLY [Bug 7552] New:  -
    Invalid task cache in targets
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=7552

Invalid task cache in targets

           Summary: Invalid task cache in targets
           Product: Ant
           Version: 1.5 alpha (nightly)
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Core
        AssignedTo: ant-dev@jakarta.apache.org
        ReportedBy: paulkilroy@yahoo.com


<project name="test" default="foo">

    <target name="bug">
        <jar destfile="foo.jar">
            <fileset dir="." includes="*.class"/>
        </jar>
        <delete file="foo.jar"/>
    </target>

    <target name="moo" depends="bug"/>

    <target name="foo" depends="bug"/>

</project>

I get the following error when I run "ant foo moo":
BUILD FAILED
/home/pkilroy/antbug/build.xml:4: You must specify the
jar file to create!


==================
[Conor]

Agreed. This bug arises from the tendency of many tasks to change, in their 
execute method, the state setup by the core using IntrospectionHelper. In this 
case it is the cleanup() method of Zip.java. In fact the cleanup method was 
changed as part of bug 4366
http://nagoya.apache.org/bugzilla/show_bug.cgi?id=4366

I'm not sure I understand the original bug report but it is probably a symptom 
of the same problem, the changing of the filesets in the execute() method. The 
fix, however, almost guarantees that the instance cannot be reused.

[...]

I think that we need to perhaps examine how all tasks preserve their state as 
I'm sure this is not limited to the Zip task.

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