From: Jacques Garrigue <garrigue@math.nagoya-u.ac.jp>
To: Julien.Verlaguet@pps.jussieu.fr
Cc: caml-list@inria.fr, caml-bugs@inria.fr
Subject: Re: [Caml-list] Bug with cyclic abbreviations ?
Date: Fri, 03 Jun 2005 10:46:50 +0900 (JST) [thread overview]
Message-ID: <20050603.104650.54351477.garrigue@math.nagoya-u.ac.jp> (raw)
In-Reply-To: <Pine.LNX.4.62.0506021458570.7262@hydrogene.pps.jussieu.fr>
From: Julien Verlaguet <Julien.Verlaguet@pps.jussieu.fr>
> This is a problem that I only have when the -rectypes option is activated.
>
> $./ocaml -rectypes
> Objective Caml version 3.08.3
>
> # type 'a t='a;;
> type 'a t = 'a
>
> # type cycle='a t as 'a;;
> The type abbreviation cycle is cyclic
>
> agreed.
>
> # let (x : 'a t as 'a)=0;;
> Fatal error: exception Stack_overflow
>
> Shouldn't it detect the cyclic abbreviation in this case too ?
Indeed, there was a bug in the occur check when using -rectypes.
I suppose this bug has always been there. Funny nobody found it
before.
This is now fixed in CVS (both 3.08 and 3.09).
By the way, there is a special address for bug reports. This helps
tracking them. (Fortunately this one was solved immediately.)
Jacques Garrigue
prev parent reply other threads:[~2005-06-03 1:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-02 13:08 Julien Verlaguet
2005-06-02 17:04 ` [Caml-list] " Frédéric Gava
2005-06-03 1:46 ` Jacques Garrigue [this message]
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