generated RProc as an argument?

example.c

#include <stdlib.h>
#include <stdio.h>
#include <mruby.h>
#include <mruby/compile.h>

int main(void)
{
    mrb_state *mrb = mrb_open();

    mrbc_context *ctx = mrbc_context_new(mrb);
    const char *code = "puts 'hello world!'\n";
    struct mrb_parser_state *parser = mrb_parse_string(mrb, code, ctx);
    struct RProc *argproc = mrb_generate_code(mrb, parser);
    mrb_value arg = mrb_obj_value(argproc);

    mrb_value receiver = mrb_load_string(mrb, "proc {|arg| arg.call }");
    mrb_funcall_argv(mrb, receiver, mrb_intern_lit(mrb, "call"), 1, &arg);

    return 0;
}