[isabelle-dev] Clash of specifications

Florian Haftmann florian.haftmann at informatik.tu-muenchen.de
Fri Jul 3 15:42:08 CEST 2009

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,

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