Re: [Caml-list] memory corruption using C stub

[Viet Le <vietlq85@gmail.com>]

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Do you have stack frame to look at?


On Sat, 10 Jun 2017 at 16:33, Alexey Egorov <alex.only.d@gmail.com> wrote:

> Hello,
>
> I have an OCaml application with some C code which (I believe) is the
> reason of some random crashes.
>
> Here is the code - https://pastebin.com/FVtLphZu
> This function reads file at given offset, divides data into chunks and
> compute checksums and compression ratio:
>   external compute_data_props
>     : string -> int -> int -> int -> (int * int * float) list =
> "compute_data_props"
>
> The problem is, after some calls to this stub, application is crashing
> at random places in OCaml code.
> I can't figure out what's going wrong, but replacing this stub with
> dummy function (which does nothing but returns some predefined list)
> eliminates the problem.
>
> What can we do to debug it? We are using OCaml 4.04.1 and Windows 10,
> and there is no other C stubs in our codebase.
>
> Thanks!
>
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-- 
Kind regards,
Viet

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