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(* TEST
modules = "test3_.c";
no-tsan; (* TSan does not support call stacks bigger than 64k frames *)
{
bytecode;
}{
native;
}
*)
(* Tests nested calls from C (main C) to OCaml (main OCaml) to C (caml_to_c) to
* OCaml (c_to_caml) to C (printf functions). A stack overflow and a heap
* overflow are triggered in c_to_caml. *)
let printf = Printf.printf
let rec mk_list length acc =
if length < 1 then acc
else mk_list (length-1) ((length-1)::acc)
let rec sum n = if n = 0 then 0 else n + sum (n-1)
let c_to_caml () =
printf "[Caml] Enter c_to_caml\n%!";
(* Heap overflow *)
let l = mk_list 1000 [] in
Printf.printf "%d\n" (List.hd l);
(* Stack overflow *)
let s = sum 100000 in
Printf.printf "%s\n"
(if s = Int64.to_int 5000050000L then "ok" else "error");
printf "[Caml] Leave c_to_caml\n%!"
let _ = Callback.register "c_to_caml" c_to_caml
external caml_to_c : unit -> unit = "caml_to_c"
let _ =
printf "[Caml] Call caml_to_c\n%!";
caml_to_c ();
printf "[Caml] Return from caml_to_c\n%!"
|
