[Question][Hw3] What should the function 'run' output?

[kws1207]

I used iter_functions, iter_blocks, iter_instrs and set_inst_debug_location to insert my own instructions.

However, running 'make' produces an error:

File "src/main.ml", line 11, characters 5-34:
11 | |> Llvm.print_module output_name
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error: This expression has type Llvm.llmodule -> unit
but an expression was expected of type unit -> 'a
Hint: Did you forget to wrap the expression using `fun () ->'?

What should the function 'run' output?

[RiceBiscuits]

You can find the output type of run function at the main function.
Hint: result of the Instrument.run function will be taken by second argument of Llvm.print_module function.

[kws1207]

Thank you.