[isabelle-dev] Clash of specifications

Amine Chaieb ac638 at cam.ac.uk
Sat Jul 4 11:23:33 CEST 2009

Thanks Florian, it helps. It is apparently the same issue as with
typerep. I fixed it.


Florian Haftmann wrote:

> Hi Amine,
>> *** Clash of specifications "Sign.sign.size_sign_inst.size_sign_def" and
>> "Sign.sign.size_sign_inst.size_sign_def" for constant "Nat.size_class.size"
>> *** At command "theory".
> I guess that you have a theory which introduces a type "sign".  When you
> ensure that this theory has "Plain" as ancestor, the problem should
> disappear; if not, I think I'll have a look at the offending theories.
> Hope this helps,
> 	Florian

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