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[news.eclipse.modeling.m2m] Re: [ATL] random crashes?
William Piers wrote: 
Hello,

answers below (and sorry for the late...) :

Rene Ladan a écrit :
Rene Ladan wrote:
Rene Ladan wrote:
Rene Ladan wrote: 
Hi,

I seem to get random crashes: the transformation is bound to crash, but the exact point differs from invocation to invocation

Do you encounter the same issue running your transformation both programmatically and using launch configs ? I mean, do you think the error comes from your code or the ATL transformation ?

Uhm, I cannot use the launch configuration at the moment, because the
ATL perspective has disappeared.  I replaced some files with a build
from CVS HEAD.  I've attached a list of currently installed m2m files.

I've attached the Java file which invokes the engine and a partial backtrace (where the crash happens at 'copy_activation').

Eclipse 3.4M7 I20080502-0100
ATL 2.0.0 20080520-0346
EMF 3.4RC1 20080512-1800

I've (finally) attached the metamodel and an input model (which is composed
from different parts, see the code in invoking.java posted in this thread).

i.e. would it be recommended to try the CVS HEAD version?

The only bug report for 'crash' and 'M2M' is number 214871.

I'm afraid this issue is a work-blocker.

I've installed the CVS HEAD version (2008-05-30), which also crashes.
It seems like the ouput model somehow gets corrupted, because it only
contains empty elements in a flat list.  However, the crash always seems
to happen in a copy_X rule, which really only copies all elements from X
to a clone of X.

Is there a way for you to provide a small test case reproducing the bug ? Elsewhere I would try to experiment some "copy" transformations on your model, but it might be longer... 
I think a copy-transformation where the rules follow the structure of the
meta-model should be enough.  See the thread for the necessary files.


Maybe the offending part is
org.eclipse.m2m.atl.engine.vm.ASMOperation.realExec(ASMOperation.java:240)

which is in the handler of the "call" instruction (so the transformation gets
compiled and loaded correctly).

So I think the error happens during the execution of the called operation (by the "call" instruction). 

Regards,
Rene

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-rwx------+ 1 rladan ????????    13179 May 30 13:24 org.eclipse.m2m.atl.ocl.core_2.0.0.200805301322.jar
-rwx------+ 1 rladan ????????    48338 May 30 13:24 org.eclipse.m2m.atl.service.core_2.0.0.200805301322.jar
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