{
		obj := NewTypeName(nopos, nil, "error", nil)
		obj.setColor(black)
		typ := NewNamed(obj, nil, nil)

		// error.Error() string
		recv := NewVar(nopos, nil, "", typ)
		res := NewVar(nopos, nil, "", Typ[String])
		sig := NewSignatureType(recv, nil, nil, nil, NewTuple(res), false)
		err := NewFunc(nopos, nil, "Error", sig)

		// interface{ Error() string }

}

func AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) {
	r1, _, e1 := Syscall9(procAcceptEx.Addr(), 8, uintptr(ls), uintptr(as), uintptr(unsafe.Pointer(buf)), uintptr(rxdatalen), uintptr(laddrlen), uintptr(raddrlen), uintptr(unsafe.Pointer(recvd)), uintptr(unsafe.Pointer(overlapped)), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func IsFunctionNamed(f *types.Func, pkgPath string, names ...string) bool {
	if f == nil {
		return false
	}
	if f.Pkg() == nil || f.Pkg().Path() != pkgPath {
		return false
	}
	if f.Type().(*types.Signature).Recv() != nil {
		return false
	}
	for _, n := range names {
		if f.Name() == n {
			return true
		}
	}
	return false
}

			fd := int(fdPtr)

			_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)

			_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)

			// Enable custom socket send/recv buffers.
			if opts.SendBufSize > 0 {
				_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_SNDBUF, opts.SendBufSize)
			}

			if opts.RecvBufSize > 0 {

				base.Fatalf("unknown op in select %v", r.Op())

			case ir.OSELRECV2:
				// case x, ok = <-c
				r := r.(*ir.AssignListStmt)
				recv := r.Rhs[0].(*ir.UnaryExpr)
				recv.X = o.expr(recv.X, nil)
				if !ir.IsAutoTmp(recv.X) {
					recv.X = o.copyExpr(recv.X)
				}
				init := ir.TakeInit(r)

				colas := r.Def
				do := func(i int, t *types.Type) {
					n := r.Lhs[i]
					if ir.IsBlank(n) {

		buf.WriteString("map[")
		WriteExpr(buf, x.Key)
		buf.WriteByte(']')
		WriteExpr(buf, x.Value)

	case *ast.ChanType:
		var s string
		switch x.Dir {
		case ast.SEND:
			s = "chan<- "
		case ast.RECV:
			s = "<-chan "
		default:
			s = "chan "
		}
		buf.WriteString(s)
		WriteExpr(buf, x.Value)
	}
}

func writeSigExpr(buf *bytes.Buffer, sig *ast.FuncType) {
	buf.WriteByte('(')

		// are rare.)
		name := ""
		if len(params) > 0 && params[0].name != "" {
			// name needed
			name = sig.recv.name
			if name == "" {
				name = "_"
			}
		}
		params = append([]*Var{NewVar(sig.recv.pos, sig.recv.pkg, name, x.typ)}, params...)
		x.mode = value
		x.typ = &Signature{
			tparams:  sig.tparams,
			params:   NewTuple(params...),
			results:  sig.results,

				continue
			}
			s.newHeapaddr(n)
			if n.Class == ir.PPARAM {
				s.move(n.Type(), s.expr(n.Heapaddr), s.decladdrs[n])
			}
		}
	}

	typ := s.curfn.Type()
	do(typ.Recvs())
	do(typ.Params())
	do(typ.Results())
}

// newHeapaddr allocates heap memory for n and sets its heap address.
func (s *state) newHeapaddr(n *ir.Name) {
	s.setHeapaddr(n.Pos(), n, s.newObject(n.Type(), nil))

		_ = a.client.CloseSend()
		if a.conn != nil {
			_ = a.conn.Close()
		}
	})
}

func (a *AdsTest) adsReceiveChannel() {
	context.AfterFunc(a.context, a.Cleanup)
	for {
		resp, err := a.client.Recv()
		if err != nil {
			if isUnexpectedError(err) {
				log.Warnf("ads received error: %v", err)
			}
			select {
			case a.error <- err:
			case <-a.context.Done():
			}
			return
		}

		_ = a.client.CloseSend()
		if a.conn != nil {
			_ = a.conn.Close()
		}
	})
}

func (a *DeltaAdsTest) adsReceiveChannel() {
	context.AfterFunc(a.context, a.Cleanup)
	for {
		resp, err := a.client.Recv()
		if err != nil {
			if isUnexpectedError(err) {
				log.Warnf("ads received error: %v", err)
			}
			select {
			case a.error <- err:
			case <-a.context.Done():
			}
			return
		}