From: vanicat@debian.org (Rémi Vanicat)
To: caml-list@inria.fr
Subject: Re: evaluation order
Date: Sun, 14 Jun 2009 19:45:24 +0200 [thread overview]
Message-ID: <87hbyiaevf.dlv@debian.org> (raw)
In-Reply-To: <4A352717.7020909@univ-savoie.fr>
Christophe Raffalli <raffalli@univ-savoie.fr> writes:
> Hello,
>
> In OCaml-3.11.1 (I did not try other version),
> the following code print 0 when compiled in bytecode and 1 in nativecode
> for obvious reason of different evaluation order in the pair ...
>
>
> let ptr = ref 0
> let fn b =
> if b then incr ptr else decr ptr
> let c = fn true, !ptr
> let _ = print_int (snd c); print_newline ()
>
> Is any difference between ocamlc and ocamlopt a bug ?
Both must follow the specification, but order of evaluation is left
unspecified in ocaml, so this difference is not a bug. The bug is in
your code that depend of an unspecified feature of one of the compiler.
--
Rémi Vanicat
next prev parent reply other threads:[~2009-06-14 17:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-14 16:36 Christophe Raffalli
2009-06-14 17:45 ` Rémi Vanicat [this message]
2009-06-14 19:40 ` [Caml-list] " Jon Harrop
2009-06-14 21:12 ` Christophe Raffalli
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