LibAFL Introduce

    // Create an observation channel using the signals map
    let observer = unsafe { StdMapObserver::from_mut_ptr("signals", SIGNALS_PTR, SIGNALS.len()) };
    // Feedback to rate the interestingness of an input
    let mut feedback = MaxMapFeedback::new(&observer);

    // A feedback to choose if an input is a solution or not
    let mut objective = CrashFeedback::new();

    // create a State from scratch
    let mut state = StdState::new(
        // RNG
        StdRand::with_seed(current_nanos()),
        // Corpus that will be evolved, we keep it in memory for performance
        InMemoryCorpus::new(),
        // Corpus in which we store solutions (crashes in this example),
        // on disk so the user can get them after stopping the fuzzer
        OnDiskCorpus::new(PathBuf::from("./crashes")).unwrap(),
        // States of the feedbacks.
        // The feedbacks can report the data that should persist in the State.
        &mut feedback,
        // Same for objective feedbacks
        &mut objective,
    )
    .unwrap();

    // The Monitor trait define how the fuzzer stats are displayed to the user
    #[cfg(not(feature = "tui"))]
    let mon = SimpleMonitor::new(|s| println!("{s}"));
    #[cfg(feature = "tui")]
    let mon = TuiMonitor::new(String::from("Baby Fuzzer"), false);

    // The event manager handle the various events generated during the fuzzing loop
    // such as the notification of the addition of a new item to the corpus
    let mut mgr = SimpleEventManager::new(mon);

    // A queue policy to get testcasess from the corpus
    let scheduler = QueueScheduler::new();

    // A fuzzer with feedbacks and a corpus scheduler
    let mut fuzzer = StdFuzzer::new(scheduler, feedback, objective);

    // Create the executor for an in-process function with just one observer
    let mut executor = InProcessExecutor::new(
        &mut harness,
        tuple_list!(observer),
        &mut fuzzer,
        &mut state,
        &mut mgr,
    )
    .expect("Failed to create the Executor");

    // Generator of printable bytearrays of max size 32
    let mut generator = RandPrintablesGenerator::new(32);

    // Generate 8 initial inputs
    state
        .generate_initial_inputs(&mut fuzzer, &mut executor, &mut generator, &mut mgr, 8)
        .expect("Failed to generate the initial corpus");

    // Setup a mutational stage with a basic bytes mutator
    let mutator = StdScheduledMutator::new(havoc_mutations());
    let mut stages = tuple_list!(StdMutationalStage::new(mutator));

    fuzzer
        .fuzz_loop(&mut stages, &mut executor, &mut state, &mut mgr)
        .expect("Error in the fuzzing loop");