DO NOT REPLY [Bug 13348] New: - JAR creates file of the correct size, but with no contents

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=13348

JAR creates file of the correct size, but with no contents

           Summary: JAR creates file of the correct size, but with no
                    contents
           Product: Ant
           Version: 1.5.1
          Platform: PC
        OS/Version: Windows NT/2K
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Core tasks
        AssignedTo: ant-dev@jakarta.apache.org
        ReportedBy: mikeh@monowai.com


After the exception at the bottom of this post is thrown, an empty JAR file of 
the correct size is created.  I have tried using the ZIP task with the same 
result.

It only happens if I CLEAN before the build.  Clean simply deletes 2 folders 
(classes and deploy) before recreating them with PREPARE.  If I try to run the 
offending target (build.wlsejb) immediately after the build fails, it works.  

I think it might have something to do with a file being held open by a 
previously executed build task in the same run, but this is a guess.

Our build file is built around compiling all core libraries, then, all 
application libraries.  The application build DEPENDs on the core libraries 
being built.  If I build the core libraries separately and then the application 
libraries, the process works faultlessly.  Adding a subsequent task after the 
ejb build causes the same exception to be thrown, but on a different library.  
For instance, the following works:

<target name="deploy.wlsrelease" depends="prepare.release">
	<antcall target="deploy.wlsejb"/>
</target>

but adding
	<antcall target="build.jspframe"/> 
after, generates the exception. JSPFrame is a core application library that is 
not built by deploy.wlsejb.  As previously stated, remove CLEAN and it works 
without error.

An abbridged version of the build file follows:
<target name="prepare.release" depends="clean">
  <property name="javac.debug" value="off"/>
  <property name="javac.optimize" value="on"/>
</target>

<target name="deploy.wlsrelease" depends="prepare.release" >
  <antcall target="build.wlsejb"/><!-- Combines Client and Bean jars -->
  <antcall target="build.jspframe"/>
</target>

<target name="build.wlsejb" depends="build.romeoejb"> <!-- builds Client and 
Bean jars -->

<jar destfile="${dist.dir}/build.jar" >
  <fileset dir="${build.dir}" >
    <include name="com/bankblocks/**/*"/>
    <include name="com/pfmejb/**/*"/>
  </fileset>
</jar>
</target>
*******************************************************
clean:
   [delete] Deleting directory C:\Dev\JSPFrame\Java\Classes-md
   [delete] Deleting directory C:\Dev\JSPFrame\Java\Deploy-md

prepare.release:

prepare:
    [mkdir] Created dir: C:\Dev\JSPFrame\Java\Classes-md
    [mkdir] Created dir: C:\Dev\JSPFrame\Java\Deploy-md
[echoproperties] #Ant properties
[echoproperties] #Mon Oct 07 09:38:55 GMT+13:00 2002
[echoproperties] javac.debug=off
[echoproperties] javac.optimize=on

deploy.wlsrelease:

prepare:
[echoproperties] #Ant properties
[echoproperties] #Mon Oct 07 09:38:55 GMT+13:00 2002
[echoproperties] javac.debug=off
[echoproperties] javac.optimize=on

build.monowai:
    [javac] Compiling 153 source files to C:\Dev\JSPFrame\Java\Classes-md
      [jar] Building jar: C:\Dev\JSPFrame\Java\Deploy-md\monowai.jar

build.bankblocks:
    [javac] Compiling 84 source files to C:\Dev\JSPFrame\Java\Classes-md
      [jar] Building jar: C:\Dev\JSPFrame\Java\Deploy-md\bankblocks.jar

build.romeoejb:
    [javac] Compiling 138 source files to C:\Dev\JSPFrame\Java\Classes-md
      [jar] Building jar: C:\Dev\JSPFrame\Java\Deploy-md\romeo_client.jar
      [jar] Building jar: C:\Dev\JSPFrame\Java\Deploy-md\romeo_beans.jar

build.wlsejb:
      [jar] Building jar: C:\Dev\JSPFrame\Java\Deploy-md\build.jar

deploy.wlsejb:
     [copy] Copying 1 file to C:\DEVAPPS\BEA\wlserver6.1
\config\mydomain\applications

prepare:
[echoproperties] #Ant properties
[echoproperties] #Mon Oct 07 09:39:23 GMT+13:00 2002
[echoproperties] javac.debug=off
[echoproperties] javac.optimize=on

build.monowai:

build.jspframe:
    [javac] Compiling 261 source files to C:\Dev\JSPFrame\Java\Classes-md
      [jar] Building jar: C:\Dev\JSPFrame\Java\Deploy-md\jspframe.jar

BUILD FAILED
java.lang.NullPointerException
        at org.apache.tools.zip.ZipOutputStream.finish(ZipOutputStream.java
(Compiled Code))
        at java.util.zip.DeflaterOutputStream.close
(DeflaterOutputStream.java:139)
        at org.apache.tools.ant.taskdefs.Zip.execute(Zip.java:402)
        at org.apache.tools.ant.Task.perform(Task.java:319)
        at org.apache.tools.ant.Target.execute(Target.java:309)
        at org.apache.tools.ant.Target.performTasks(Target.java:336)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:371)
        at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:143)
        at org.apache.tools.ant.Task.perform(Task.java:319)
        at org.apache.tools.ant.Target.execute(Target.java:309)
        at org.apache.tools.ant.Target.performTasks(Target.java:336)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1250)
        at org.apache.tools.ant.Main.runBuild(Main.java:610)
        at org.apache.tools.ant.Main.start(Main.java:196)
        at org.apache.tools.ant.Main.main(Main.java:235)

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