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Message-ID: <009201c00616$15ce6970$210148bf@dylan>
From: "David McClain" <dmcclain@azstarnet.com>
To: "Markus Mottl" <mottl@miss.wu-wien.ac.at>,
        "=?iso-8859-1?Q?David_Mentr=E9?=" <David.Mentre@irisa.fr>
Cc: "Nicolas Joliot" <Nicolas.Joliot@irisa.fr>, <caml-list@inria.fr>
Subject: =?iso-8859-1?Q?Re:_Interfa=E7age_C/CAML?=
Date: Mon, 14 Aug 2000 10:35:43 -0700
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Many thanks for pointing this error out... I had inadvertantly used the
incorrect Store_... form twice on finalized structures in my bulk of code,
although I have never experienced any problems from it... But just to be
safe I read the message in the archives and went through by stuff to clean
it up...

- David

-----Original Message-----
From: David Mentré <David.Mentre@irisa.fr>
To: Markus Mottl <mottl@miss.wu-wien.ac.at>
Cc: Nicolas Joliot <Nicolas.Joliot@irisa.fr>; caml-list@inria.fr
<caml-list@inria.fr>
Date: Monday, August 14, 2000 9:49 AM
Subject: Re: Interfaçage C/CAML


>Markus Mottl <mottl@miss.wu-wien.ac.at> writes:
>
>> It seems that a common bug has struck again: using "Store_{whatever}" in
>> C-interfaces is only allowed (and then mandatory) with structured blocks.
>> Using it for anything else may crash the GC.
>
>I would say that Store_{whatever} macros are useful for data structures
>that are created in the C-world but should be managed (and destroyed) in
>the OCaml-world, WITHOUT any further access on the data by the C
>part. For all other cases, use the Field_{whatever} macros. With this
>macro, the OCaml GC won't try to have a look at your C data structures.
>
>By the way, Markus has already found a bug like this in my own code. See
>this message for further details on how the bug is triggered :
>  http://caml.inria.fr/archives/200002/msg00074.html
>
>I hope it helps,
>d.
>--
> David.Mentre@irisa.fr -- http://www.irisa.fr/prive/dmentre/
> Opinions expressed here are only mine.
>