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Re: [Coq-Club] Re: allowing non-structurally terminating functions ?


chronological Thread 
  • From: Arnaud Spiwack <Arnaud.Spiwack AT lix.polytechnique.fr>
  • To: Julien Forest <forest AT ensiie.fr>
  • Cc: Arnaud Spiwack <Arnaud.Spiwack AT lix.polytechnique.fr>, Matthieu Sozeau <sozeau AT lri.fr>, frederic.blanqui AT loria.fr, coq-club AT pauillac.inria.fr
  • Subject: Re: [Coq-Club] Re: allowing non-structurally terminating functions ?
  • Date: Sun, 15 Jun 2008 14:24:45 +0200
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I would have thought the keyword "Unsafe" would have covered it, wouldn't it ?

Julien Forest a écrit :
I personnally have no problem with an Unsafe Fixpoint feature. It's nothing worse than using "Axiom" anyway (plus it doesn't block reduction, so it's even better). As long as when I Print an Unsafe Fixpoint, I can see it is such (and more generally, that it's an accessible information to the kernel).
The only difference between Axiom and Usafe Fixpoint is that any one is
(should be) aware that using Axiom is dangerous w.r.t. consistency. J






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