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Date: Thu, 29 Apr 2004 09:19:47 +0100
From: Peter Reilly <peter.reilly@corvil.com>
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To: Ant Developers List <dev@ant.apache.org>
Subject: Re: Error reporting pb with <macrodef>
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I have not been able to duplicate this with ant head of ant 1.6.1.

I tried the following:

<project default="t">
  <target name="t">
    <macrodef name="compile">
      <sequential>
        <javac fork="yes" srcdir="src" destdir="classes"/>
      </sequential>
    </macrodef>
    <compile/>
  </target>
</project>

And tried to get the javac to fail by changing the permission
of the classes directory, and also by moving the javac program.
In both cases the stacktrace was available with a -verbose flag
to ant.

Peter

Dominique Devienne wrote:

>I have a <macrodef> that wraps a <javac> which in this case forks. The
>forked javac fails, but the 1.6 code for MacroInstance seems to eat up the
>stack traces for the nested exception, and displays only the message of the
>outermost exception. I suspect that the exception here is a BuildException,
>which wraps the IOException and it's message, which would tell me exactly
>why it failed.
>
>I'll try to temporarily copy the content of the <macrodef> in place of the
>macro use itself, to get a better error message, but it would be nice it
>using <macrodef> was not behaving differently than the same Ant code running
>outside a macrodef.
>
>Thanks, --DD
>
>BUILD FAILED
>C:\acme\build.xml:243: Following error occured while executing this line
>C:\acme\build.xml:233: Error running javac.exe compiler
>        at
>org.apache.tools.ant.ProjectHelper.addLocationToBuildException(ProjectHelper
>.java:574)
>        at
>org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:345)
>        at
>org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:306)
>        at org.apache.tools.ant.Task.perform(Task.java:401)
>        at org.apache.tools.ant.Target.execute(Target.java:338)
>        at org.apache.tools.ant.Target.performTasks(Target.java:365)
>        at org.apache.tools.ant.Project.executeTarget(Project.java:1237)
>        at org.apache.tools.ant.Project.executeTargets(Project.java:1094)
>        at org.apache.tools.ant.Main.runBuild(Main.java:669)
>        at org.apache.tools.ant.Main.startAnt(Main.java:220)
>        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:215)
>        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:90)
>
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