func tempDir() string {
	useGetTempPath2Once.Do(func() {
		useGetTempPath2 = (windows.ErrorLoadingGetTempPath2() == nil)
	})
	getTempPath := syscall.GetTempPath
	if useGetTempPath2 {
		getTempPath = windows.GetTempPath2
	}
	n := uint32(syscall.MAX_PATH)
	for {
		b := make([]uint16, n)
		n, _ = getTempPath(uint32(len(b)), &b[0])
		if n > uint32(len(b)) {
			continue
		}
		if n == 3 && b[1] == ':' && b[2] == '\\' {

	return &PathError{Op: op, Path: f.name, Err: err}
}

// TempDir returns the default directory to use for temporary files.
//
// On Unix systems, it returns $TMPDIR if non-empty, else /tmp.
// On Windows, it uses GetTempPath, returning the first non-empty
// value from %TMP%, %TEMP%, %USERPROFILE%, or the Windows directory.
// On Plan 9, it returns /tmp.
//
// The directory is neither guaranteed to exist nor have accessible
// permissions.

		err = errnoErr(e1)
	}
	return
}

func GetSystemTimeAsFileTime(time *Filetime) {
	Syscall(procGetSystemTimeAsFileTime.Addr(), 1, uintptr(unsafe.Pointer(time)), 0, 0)
	return
}

func GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) {
	r0, _, e1 := Syscall(procGetTempPathW.Addr(), 2, uintptr(buflen), uintptr(unsafe.Pointer(buf)), 0)
	n = uint32(r0)
	if n == 0 {
		err = errnoErr(e1)
	}
	return

//sys	WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff]
//sys	GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW
//sys	CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error)
//sys	GetFileType(filehandle Handle) (n uint32, err error)

//sys	waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects
//sys	GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW
//sys	CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error)
//sys	GetFileType(filehandle Handle) (n uint32, err error)

	r0, _, e1 := syscall.Syscall(procGetSystemWindowsDirectoryW.Addr(), 2, uintptr(unsafe.Pointer(dir)), uintptr(dirLen), 0)
	len = uint32(r0)
	if len == 0 {
		err = errnoErr(e1)
	}
	return
}

func GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) {
	r0, _, e1 := syscall.Syscall(procGetTempPathW.Addr(), 2, uintptr(buflen), uintptr(unsafe.Pointer(buf)), 0)
	n = uint32(r0)
	if n == 0 {
		err = errnoErr(e1)
	}

		{"GetServByName", Func, 0},
		{"GetShortPathName", Func, 0},
		{"GetStartupInfo", Func, 0},
		{"GetStdHandle", Func, 0},
		{"GetSystemTimeAsFileTime", Func, 0},
		{"GetTempPath", Func, 0},
		{"GetTimeZoneInformation", Func, 0},
		{"GetTokenInformation", Func, 0},
		{"GetUserNameEx", Func, 0},
		{"GetUserProfileDirectory", Func, 0},
		{"GetVersion", Func, 0},

pkg syscall (windows-386), func GetStdHandle(int) (Handle, error)
pkg syscall (windows-386), func GetSystemTimeAsFileTime(*Filetime)
pkg syscall (windows-386), func GetTempPath(uint32, *uint16) (uint32, error)
pkg syscall (windows-386), func GetTimeZoneInformation(*Timezoneinformation) (uint32, error)
pkg syscall (windows-386), func GetTokenInformation(Token, uint32, *uint8, uint32, *uint32) error