type lookupflags = uint32
type oflags = uint32
type rights = uint64
type timestamp = uint64
type dircookie = uint64
type filedelta = int64
type fstflags = uint32

type iovec struct {
	buf    uintptr32
	bufLen size
}

const (
	LOOKUP_SYMLINK_FOLLOW = 0x00000001
)

const (
	OFLAG_CREATE    = 0x0001
	OFLAG_DIRECTORY = 0x0002
	OFLAG_EXCL      = 0x0004
	OFLAG_TRUNC     = 0x0008
)

const (

	} else {
		pcert = tmpl
		pkey = key
	}

	var pub interface{}
	var desc string
	switch k := key.(type) {
	case *rsa.PrivateKey:
		pub = &k.PublicKey
		desc = fmt.Sprintf("RSA-%d", k.N.BitLen())
	case *ecdsa.PrivateKey:
		pub = &k.PublicKey
		desc = "ECDSA-" + k.Curve.Params().Name
	default:
		t.Fatalf("invalid key %T", key)
	}

	for i := range s.baseNonce {
		nonce[i] ^= s.baseNonce[i]
	}
	// Message limit is, according to the RFC, 2^95+1, which
	// is somewhat confusing, but we do as we're told.
	if s.seqNum.bitLen() >= (s.aead.NonceSize()*8)-1 {
		panic("message limit reached")
	}
	s.seqNum = s.seqNum.addOne()
	return nonce
}

func (s *Sender) Seal(aad, plaintext []byte) ([]byte, error) {

			t.tag = bytesEncoder(appendTagAndLength(t.scratch[:0], tagAndLength{ClassUniversal, tag, bodyLen, isCompound}))

			tt := new(taggedEncoder)

			tt.body = t

			tt.tag = bytesEncoder(appendTagAndLength(tt.scratch[:0], tagAndLength{
				class:      class,
				tag:        *params.tag,
				length:     bodyLen + t.tag.Len(),
				isCompound: true,
			}))

			return tt, nil
		}

		check.representable(x, under(x.typ).(*Basic))
		return
	}

	// Untyped integer values must not grow arbitrarily.
	const prec = 512 // 512 is the constant precision
	if x.val.Kind() == constant.Int && constant.BitLen(x.val) > prec {
		op := opName(x.expr)
		if op != "" {
			op += " "
		}
		check.errorf(atPos(opPos), InvalidConstVal, "constant %soverflow", op)
		x.val = constant.MakeUnknown()
	}
}

func (ip Addr) IsValid() bool { return ip.z != z0 }

// BitLen returns the number of bits in the IP address:
// 128 for IPv6, 32 for IPv4, and 0 for the zero [Addr].
//
// Note that IPv4-mapped IPv6 addresses are considered IPv6 addresses
// and therefore have bit length 128.
func (ip Addr) BitLen() int {
	switch ip.z {
	case z0:
		return 0
	case z4:
		return 32
	}
	return 128

// given hash function. salt is a random sequence of bytes whose length will be
// later used to verify the signature.
func signPSSWithSalt(priv *PrivateKey, hash crypto.Hash, hashed, salt []byte) ([]byte, error) {
	emBits := priv.N.BitLen() - 1
	em, err := emsaPSSEncode(hashed, emBits, salt, hash.New())
	if err != nil {
		return nil, err
	}

	if boring.Enabled {
		bkey, err := boringPrivateKey(priv)
		if err != nil {
			return nil, err

		Esize = Fsize - Msize1
		Ebias = 1<<(Esize-1) - 1
		Emin  = 1 - Ebias
		Emax  = Ebias
	)

	// TODO(adonovan): specialize common degenerate cases: 1.0, integers.
	alen := a.bitLen()
	if alen == 0 {
		return 0, true
	}
	blen := b.bitLen()
	if blen == 0 {
		panic("division by zero")
	}

	// 1. Left-shift A or B such that quotient A/B is in [1<<Msize1, 1<<(Msize2+1)

		return fmt.Sprintf("V%d.%s", r&31, arrange((r>>5)&15))
	}
	// Return system register name.
	name, _, _ := SysRegEnc(int16(r))
	if name != "" {
		return name
	}
	return fmt.Sprintf("badreg(%d)", r)
}

func DRconv(a int) string {
	if a >= C_NONE && a <= C_NCLASS {
		return cnames7[a]
	}
	return "C_??"
}

func SPCconv(a int64) string {
	spc := SpecialOperand(a)

func F0() *S { return &S{1, 2, 3} }

var LitSNoArgs = F0()

var myError = errors.New("mine")

func gopherize(s string) string { return "gopher gopher gopher " + s }

var animals = gopherize("badger")

// These init funcs should optimize away.

func init() {
}

func init() {
	if false {
	}
}

func init() {
	for false {
	}
}