}
	}
	if *cpuprofileflag != "" {
		f, err := os.Create(*cpuprofileflag)
		if err != nil {
			fatal("%v", err)
		}
		if err := pprof.StartCPUProfile(f); err != nil {
			fatal("%v", err)
		}
		atExit(func() {
			pprof.StopCPUProfile()
			if err = f.Close(); err != nil {
				fatal("error closing cpu profile: %v", err)
			}
		})
	}
	if *memprofileflag != "" {
		if *memprofilerateflag != 0 {

	flag.Parse()

	r, err := trace.NewReader(os.Stdin)
	if err != nil {
		log.Fatal(err)
	}
	v := testtrace.NewValidator()
	for {
		ev, err := r.ReadEvent()
		if err == io.EOF {
			break
		}
		if err != nil {
			log.Fatal(err)
		}
		if *logEvents {
			log.Println(ev.String())
		}
		if err := v.Event(ev); err != nil {
			log.Fatal(err)
		}
	}

    @Override
    public boolean isFatalEnabled() {
        return logger.isFatalEnabled();
    }

    @Override
    public void fatal(final String message) {
        logger.fatal(message);
    }

    @Override
    public void fatal(final String message, final Throwable t) {
        logger.fatal(message, t);
    }

    @Override
    public boolean isErrorEnabled() {
        return logger.isErrorEnabled();
    }

	dotGit := filepath.Join(parent, ".git")
	if err := os.Mkdir(dotGit, 000); err != nil {
		t.Fatal(err)
	}

	overlayStart := time.Now()

	goroot := filepath.Join(parent, "goroot")

	gorootSrc := filepath.Join(goroot, "src")
	if err := overlayDir(gorootSrc, filepath.Join(realGoroot, "src")); err != nil {
		t.Fatal(err)
	}

	gorootLib := filepath.Join(goroot, "lib")

	listener, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		log.Fatal(err)
	}

	var wg sync.WaitGroup
	wg.Add(1)
	go func() {
		defer wg.Done()
		conn, err := listener.Accept()
		if err != nil {
			log.Fatal(err)
		}
		defer conn.Close()
		if _, err := io.Copy(io.Discard, conn); err != nil {
			log.Fatal(err)
		}
	}()

	wg.Add(1)
	go func() {
		defer wg.Done()

	}
	return nil
}

func TestFileFdsAreInitialised(t *testing.T) {
	exe, err := os.Executable()
	if err != nil {
		t.Fatal(err)
	}
	f, err := os.Open(exe)
	if err != nil {
		t.Fatal(err)
	}
	defer f.Close()

	err = checkFileIsNotPartOfNetpoll(f)
	if err != nil {
		t.Fatal(err)
	}
}

func TestSerialFdsAreInitialised(t *testing.T) {
	for _, name := range []string{"COM1", "COM2", "COM3", "COM4"} {

// Fatal outputs a message at fatal level.
func Fatal(fields any) {
	defaultScope.Fatal(fields)
}

// Fatalf uses fmt.Sprintf to construct and log a message at fatal level.
func Fatalf(format string, args ...any) {
	defaultScope.Fatalf(format, args...)
}

// FatalEnabled returns whether output of messages using this scope is currently enabled for fatal-level output.
func FatalEnabled() bool {

	v := listPathOptions{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

	left, err = msgp.Skip(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)

	}
}

// Fatal prints only fatal error message with no stack trace
// it will be called for input validation failures
func Fatal(err error, msg string, data ...interface{}) {
	fatal(err, msg, data...)
}

func fatal(err error, msg string, data ...interface{}) {
	if msg == "" {
		if len(data) > 0 {
			msg = fmt.Sprint(data...)
		} else {
			msg = "a fatal error"
		}
	} else {

		w.Write([]byte("hello"))
	}))
	defer ts.Close()
	res, err := http.Get(ts.URL)
	if err != nil {
		t.Fatal(err)
	}
	got, err := io.ReadAll(res.Body)
	res.Body.Close()
	if err != nil {
		t.Fatal(err)
	}
	if string(got) != "hello" {
		t.Errorf("got %q, want hello", string(got))
	}
}

// Issue 12781