From: Dmitry Bely <dmitry.bely@gmail.com>
To: Romain Beauxis <toots@rastageeks.org>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Bigarrays and blocking_section..
Date: Tue, 25 May 2010 23:29:28 +0400 [thread overview]
Message-ID: <AANLkTik8RlicxkdiITwEg8nejkx0X4yYl-bkXNq3TCFI@mail.gmail.com> (raw)
In-Reply-To: <201005251125.21755.toots@rastageeks.org>
On Tue, May 25, 2010 at 8:25 PM, Romain Beauxis <toots@rastageeks.org> wrote:
> Hi all !
>
> I am trying to understand some segfault that we observe and I have a question
> about the relationships between bigarrays in C and the Gc.
>
> We have the following code:
>
> static frame *frame_of_value(value v, frame *f)
> {
> f->data = Caml_ba_data_val(Field(v,0));
> f->width = Int_val(Field(v,1));
> f->height = Int_val(Field(v,2));
> f->stride = Int_val(Field(v,3));
>
> return f;
> }
Are you sure that you correctly calculate the bigarray size in your
Caml code? Why not just use struct caml_ba_array fields? I suspect
it's not GC problem but just a buffer overrun in memset().
- Dmitry Bely
next prev parent reply other threads:[~2010-05-25 19:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-25 16:25 Romain Beauxis
2010-05-25 19:29 ` Dmitry Bely [this message]
2010-05-25 20:11 ` [Caml-list] " Romain Beauxis
2010-05-26 1:16 ` Goswin von Brederlow
2010-05-26 6:00 ` Alain Frisch
2010-05-26 6:47 ` Goswin von Brederlow
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