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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