// methods to stop working.
func (file *File) Fd() uintptr {
	if file == nil {
		return uintptr(syscall.InvalidHandle)
	}
	return uintptr(file.pfd.Sysfd)
}

// newFile returns a new File with the given file handle and name.
// Unlike NewFile, it does not check that h is syscall.InvalidHandle.
func newFile(h syscall.Handle, name string, kind string) *File {
	if kind == "file" {
		var m uint32

	Control     syscall.WSABuf
	Flags       uint32
}

//sys	WSASocket(af int32, typ int32, protocol int32, protinfo *syscall.WSAProtocolInfo, group uint32, flags uint32) (handle syscall.Handle, err error) [failretval==syscall.InvalidHandle] = ws2_32.WSASocketW
//sys	WSAGetOverlappedResult(h syscall.Handle, o *syscall.Overlapped, bytes *uint32, wait bool, flags *uint32) (err error) = ws2_32.WSAGetOverlappedResult

func loadWSASendRecvMsg() error {

	handle = Handle(r0)
	if handle == InvalidHandle {
		err = errnoErr(e1)
	}
	return
}

func findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) {
	r0, _, e1 := syscall.Syscall(procFindFirstFileW.Addr(), 2, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(data)), 0)
	handle = Handle(r0)
	if handle == InvalidHandle {
		err = errnoErr(e1)
	}
	return
}

	})
	allowsPerRun(1, func() {
		syscall.UTF16FromString("abc")
	})
}

func TestNewFileInvalid(t *testing.T) {
	t.Parallel()
	if f := os.NewFile(uintptr(syscall.InvalidHandle), "invalid"); f != nil {
		t.Errorf("NewFile(InvalidHandle) got %v want nil", f)
	}
}

func TestReadDirPipe(t *testing.T) {
	dir := `\\.\pipe\`
	fi, err := os.Stat(dir)
	if err != nil || !fi.IsDir() {