From: skaller <skaller@tpg.com.au>
To: Brian Hurt <bhurt@spnz.org>
Cc: Jacques Garrigue <garrigue@kurims.kyoto-u.ac.jp>,
rich@annexia.org, caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] CamlDL/Abstract pointers problem
Date: 31 Jan 2004 07:56:25 +1100 [thread overview]
Message-ID: <1075496184.23595.77.camel@localhost.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.44.0401300101280.4211-100000@localhost.localdomain>
On Fri, 2004-01-30 at 18:04, Brian Hurt wrote:
> On Fri, 30 Jan 2004, Jacques Garrigue wrote:
>
> > However, there is another scenario which could cause you problems:
> > if for some reason your C pointer get freed, and later the ML heap is
> > extended so that it includes the address of the pointer, then you may
> > have some pointers left on the ML which will now be seen as ML
> > pointers.
>
> ML doesn't memset memory it just allocated?
It doesn't need to .. all values are initialised (in Ocaml).
When writing C/Ocaml glue, you have to be careful
that you *do* initialise all values before possibly triggering
the collector..
> This may be a problem- I
> don't *think* the C standard requires malloc to memset the memory itself,
it doesn't. The function which does do that is
called 'calloc'.
--
John Max Skaller, mailto:skaller@tpg.com.au
snail:25/85c Wigram Rd, Glebe, NSW 2037, Australia.
voice:61-2-9660-0850. Checkout Felix: http://felix.sf.net
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prev parent reply other threads:[~2004-01-30 20:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-29 13:06 ronniec95
2004-01-29 15:02 ` Richard Jones
2004-01-29 15:52 ` ronniec95
2004-01-29 16:32 ` art yerkes
2004-01-29 19:04 ` skaller
2004-01-29 19:26 ` Richard Jones
2004-01-29 19:55 ` Alain.Frisch
2004-01-29 20:24 ` Richard Jones
2004-01-29 23:07 ` David Brown
2004-01-30 0:20 ` Jacques Garrigue
2004-01-30 7:04 ` Brian Hurt
2004-01-30 15:36 ` Jacques Garrigue
2004-01-30 16:52 ` Brian Hurt
2004-01-30 20:56 ` skaller [this message]
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