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Date: Tue, 24 Apr 2007 18:30:12 +0100
From: "Chris Dudley" <chris.dudley@gmail.com>
To: user@ant.apache.org
Subject: Exec on Windows ignores return code?
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Apologies if this is a FAQ or a known problem but I couldn't find
anything useful in the archives, google or in bugzilla.

I am having trouble with the exec task on Windows.
It seems to me that regardless of what the executable returns, ANT
always claims the return code on Windows is 0.

The code below runs a simple test batch file. The batch file is
hardcoded to always return 1. Running the batch file from a command
prompt and then echoing %ERRORLEVEL% does indeed show the return code
to be 1 and not 0.

So where is ANT getting the 0 return code from?

I have tried a similar test on Linux and UNIX (not using a batch
script of course) and it works perfectly.

But yet I don't think this is a peculiarity of Windows since
%ERRORLEVEL% is being set correctly - ANT just isn't picking it up.

I have tried ANT 1.6.2, 1.6.5 and 1.7.0 - all seem to exhibit the same
behaviour.

I am hoping there is a workaround or a simple solution to something
stupid I've done!

Thanks!

This is the ANT snippet:

<property name="test.dir" value="c:\install"/>
<exec executable="cmd" failonerror="true" resultproperty="error" >
<arg line="/c ${test.dir}\test.bat"/>
</exec>
<echo message="error=${error}"/>

test.bat contains just one line:

exit /B 1

This is what comes out when ant is run with debug on:

     [exec] Current OS is Windows XP
     [exec] Executing 'cmd' with arguments:
     [exec] '/c'
     [exec] 'C:\install\test.bat'
     [exec]
     [exec] The ' characters around the executable and arguments are
     [exec] not part of the command.
Execute:Java13CommandLauncher: Executing 'cmd' with arguments:
'/c'
'C:\install\test.bat'

The ' characters around the executable and arguments are
not part of the command.
     [exec]
     [exec] C:\>exit /B 1
Setting project property: error -> 0
     [echo] error=0

I really want ANT to abort the build if the executable returns
non-zero, which works fine on UNIX but I need it to work on Windows
too.

Any ideas please?

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