[isabelle-dev] isabelle test failed -- HOL-Library-Codegenerator_Test

Makarius makarius at sketis.net
Wed Apr 4 13:22:41 CEST 2012

On Tue, 3 Apr 2012, Florian Haftmann wrote:

> Am 02.04.2012 13:36, schrieb Florian Haftmann:
>>>> /mnt/home/isatest/isadist/Isabelle_02-Apr-2012/lib/scripts/run-polyml:
>>> line 77: 27590 Killed "$POLY" -q $ML_OPTIONS
>>>> *** Code check failed for SML: "$ISABELLE_PROCESS" -r -q -u Pure
>>>> *** At command "export_code" (line 17 of
>>>> "~~/src/HOL/Codegenerator_Test/Generate.thy")
>>> Does anybody understand this failure of isatest? The process is
>>> terminated after many hours.
>>> I've tried to reproduce it by hand, loading
>>> Codegenerator_Test/Generate.thy into HOL-Library. It works for
>>> polyml-5.4.1_x86_64-darwin and polyml-5.4.1_x86-darwin, but
>>> polyml-5.3.0_x86-darwin does not seem to terminate.
>> This could indicate a non-termination issue in the polyml compiler (not
>> runtime!) which has been resolved in the meantime.
> It could be the same issue as has already been discovered by Andreas,
> but I am not able to recall the details (minimal example, polyml
> versions etc.).

There are various known deficiencies with the variety of Poly/ML versions 
that we support officially -- David Matthews is continously improving the 
situation.  One needs to try minimizing the pressure on old versions to 
keep things running, without forced discontinuation of a version without 
really strong reasons.

In Isabelle/344712917580 I have tweaked isatest again, and for the moment 
it looks like the failure does not happen in this configuration.


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