From: David Teller <David.Teller@univ-orleans.fr>
To: Damien Doligez <damien.doligez@inria.fr>
Cc: caml users <caml-list@inria.fr>
Subject: Re: [Caml-list] Safe Obj.magic container ?
Date: Thu, 28 Feb 2008 16:29:46 +0100 [thread overview]
Message-ID: <1204212586.11218.21.camel@Blefuscu> (raw)
In-Reply-To: <DE69B31E-7754-4054-8482-B1DEBB0EFB8D@inria.fr>
Interesting. Can I assume that, if my type is boxed (in this case, a
polymorphic variant), I can successfully convert it to Obj.t and back ?
Thanks,
David
On Thu, 2008-02-28 at 15:23 +0100, Damien Doligez wrote:
> If that was the whole story, Obj.magic would be pretty safe. But
> there are exceptions to the uniform representation of values, and
> they make Obj.magic really hard to use.
>
> The most important exception is floating-point numbers. They are
> not always represented as one word each, and that means even
> Obj.repr is unsafe.
--
David Teller
Security of Distributed Systems
http://www.univ-orleans.fr/lifo/Members/David.Teller
Angry researcher: French Universities need reforms, but the LRU act brings liquidations.
next prev parent reply other threads:[~2008-02-28 15:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-27 9:09 David Teller
2008-02-27 9:43 ` [Caml-list] " Luc Maranget
[not found] ` <37B36607-9F22-4537-B4DB-1E04348E2B90@inria.fr>
2008-02-28 14:23 ` Damien Doligez
2008-02-28 15:29 ` David Teller [this message]
2008-02-28 16:24 ` Damien Doligez
2008-02-29 1:52 ` Jacques Garrigue
2008-02-29 8:18 ` David Teller
2008-02-28 19:20 ` Jake Donham
2008-02-28 23:19 ` Richard Jones
2008-02-27 11:23 ` Tom Primožič
2008-02-27 21:22 ` David Teller
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