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()

			t.Error(err)
		}
	}

	// test relative paths
	wd, err := os.Getwd()
	if err != nil {
		t.Fatal(err)
	}
	err = os.Chdir(tmpDir)
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		err := os.Chdir(wd)
		if err != nil {
			t.Fatal(err)
		}
	}()
	for _, test := range tests {
		err := test.globRel("")
		if err != nil {
			t.Error(err)
		}

		r0, _, e = Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(namep)), oldptr, 0)
	}

	if int32(r0) == -1 {
		err = e
	}
	return
}

func Fchdir(fd int) (err error) {
	path, err := Fd2path(fd)

	if err != nil {
		return
	}

	return Chdir(path)
}

type Timespec struct {
	Sec  int32
	Nsec int32
}

type Timeval struct {
	Sec  int32
	Usec int32
}

	}

	if len(attr.Dir) != 0 {
		// StartProcess assumes that argv0 is relative to attr.Dir,
		// because it implies Chdir(attr.Dir) before executing argv0.
		// Windows CreateProcess assumes the opposite: it looks for
		// argv0 relative to the current directory, and, only once the new
		// process is started, it does Chdir(attr.Dir). We are adjusting
		// for that difference here by making argv0 absolute.
		var err error

//
//  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

		wd := replacer.Replace(test.wd)
		arg := replacer.Replace(test.arg)
		want := replacer.Replace(test.want)

		if test.wd == "." {
			err := os.Chdir(cwd)
			if err != nil {
				t.Error(err)

				continue
			}
		} else {
			err := os.Chdir(wd)
			if err != nil {
				t.Error(err)

				continue
			}
		}
		if arg != "" {
			arg = filepath.Clean(arg)
		}

	}
	return getfsstat(bufptr, bufsize, flags)
}

/*
 * 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)

	}

	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 {

// duplicate file descriptors.
func dupCloseOnExecOld(fd int) (int, string, error) {
	return -1, "dup", syscall.ENOSYS
}

// Fchdir wraps syscall.Fchdir.
func (fd *FD) Fchdir() error {
	if err := fd.incref(); err != nil {
		return err
	}
	defer fd.decref()
	return syscall.Chdir(fd.Path)
}

// ReadDir wraps syscall.ReadDir.
// We treat this like an ordinary system call rather than a call

	if int32(r0) == -1 {
		err = e1
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func chdir(path string) (err error) {
	var _p0 *byte
	_p0, err = BytePtrFromString(path)
	if err != nil {
		return
	}
	r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
	if int32(r0) == -1 {