type syscallDescriptor = syscall.Handle

// chdir changes the current working directory to the named directory,
// and then restore the original working directory at the end of the test.
func chdir(t *testing.T, dir string) {
	olddir, err := os.Getwd()
	if err != nil {
		t.Fatalf("chdir: %v", err)
	}
	if err := os.Chdir(dir); err != nil {
		t.Fatalf("chdir %s: %v", dir, err)
	}

	t.Cleanup(func() {

	flagSet.BoolVar(&short, "short", false, "one-line representation for each symbol")
	flagSet.Parse(args)
	telemetry.Inc("doc/invocations")
	telemetry.CountFlags("doc/flag:", *flag.CommandLine)
	if chdir != "" {
		if err := os.Chdir(chdir); err != nil {
			return err
		}
	}
	var paths []string
	var symbol, method string
	// Loop until something is printed.
	dirs.Reset()
	for i := 0; ; i++ {

		dir = "/tmp"
	}
	return dir
}

// Chdir changes the current working directory to the file,
// which must be a directory.
// If there is an error, it will be of type *PathError.
func (f *File) Chdir() error {
	if err := f.incref("chdir"); err != nil {
		return err
	}
	defer f.decref()
	if e := syscall.Fchdir(f.fd); e != nil {
		return &PathError{Op: "chdir", Path: f.name, Err: e}
	}
	return nil
}

		return err
	}
	return Chmod(name, fi.Mode()|ModeSticky)
}

// Chdir changes the current working directory to the named directory.
// If there is an error, it will be of type *PathError.
func Chdir(dir string) error {
	if e := syscall.Chdir(dir); e != nil {
		testlog.Open(dir) // observe likely non-existent directory
		return &PathError{Op: "chdir", Path: dir, Err: e}
	}
	if runtime.GOOS == "windows" {
		getwdCache.Lock()

//
//  2. A toolchain switch later on reinvokes the new go command with the same arguments.
//     The parent toolchain has already done the chdir; the child must not try to do it again.
func handleChdirFlag() {
	_, used := lookupCmd(os.Args[1:])
	used++ // because of [1:]
	if used >= len(os.Args) {
		return
	}

	var dir string

	}

	os.Setenv("GOPATH", filepath.Join(GOPATH, "alt"))
	if err := os.Chdir(altRoot); err != nil {
		log.Panic(err)
	} else {
		prettyPrintf("cd %s\n", altRoot)
	}
	os.Setenv("PWD", altRoot)
	goCmd(nil, "build", "-buildmode=plugin", "-o", filepath.Join(modRoot, "plugin-mismatch.so"), "./plugin-mismatch")

	os.Setenv("GOPATH", GOPATH)
	if err := os.Chdir(modRoot); err != nil {
		log.Panic(err)
	} else {

	path string
	err  error
	sync.Once
}

func chdir(t *testing.T, dir string) {
	t.Helper()

	prev, err := os.Getwd()
	if err != nil {
		t.Fatal(err)
	}
	if err := os.Chdir(dir); err != nil {
		t.Fatal(err)
	}
	t.Logf("Chdir(%#q)", dir)

	t.Cleanup(func() {
		if err := os.Chdir(prev); err != nil {
			// Couldn't chdir back to the original working directory.

	if err != nil {
		t.Fatalf("chtmpdir: %v", err)
	}
	d, err := os.MkdirTemp("", "test")
	if err != nil {
		t.Fatalf("chtmpdir: %v", err)
	}
	if err := os.Chdir(d); err != nil {
		t.Fatalf("chtmpdir: %v", err)
	}
	return func() {
		if err := os.Chdir(oldwd); err != nil {
			t.Fatalf("chtmpdir: %v", err)
		}
		os.RemoveAll(d)
	}
}

func touch(t *testing.T, name string) {
	f, err := os.Create(name)

/*
 * Exposed directly
 */
//sys	Access(path string, mode uint32) (err error)
//sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
//sys	Chdir(path string) (err error)
//sys	Chflags(path string, flags int) (err error)
//sys	Chmod(path string, mode uint32) (err error)
//sys	Chown(path string, uid int, gid int) (err error)
//sys	Chroot(path string) (err error)

	gopath := filepath.Join(work, "gopath")
	must(s.Setenv("GOPATH", gopath))
	gopathSrc := filepath.Join(gopath, "src")
	must(os.MkdirAll(gopathSrc, 0777))
	must(s.Chdir(gopathSrc))
	return telemetryDir
}

func scriptEnv(srv *vcstest.Server, srvCertFile string) ([]string, error) {
	httpURL, err := url.Parse(srv.HTTP.URL)
	if err != nil {
		return nil, err
	}