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Bigarrays and blocking_section..
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Date: | 2010-05-25 (19:29) |
From: | Dmitry Bely <dmitry.bely@g...> |
Subject: | Re: [Caml-list] Bigarrays and blocking_section.. |
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