func fboth[T any](chan T) {}
func frecv[T any](<-chan T) {}
func fsend[T any](chan<- T) {}

func _() {
	var both chan int
	var recv <-chan int
	var send chan<-int

	fboth(both)
	fboth(recv /* ERROR "cannot use" */ )
	fboth(send /* ERROR "cannot use" */ )

	frecv(both)
	frecv(recv)
	frecv(send /* ERROR "cannot use" */ )

	fsend(both)
	fsend(recv /* ERROR "cannot use" */)
	fsend(send)
}

	"golang.org/x/tools/internal/aliases"
)

// ReceiverNamed returns the named type (if any) associated with the
// type of recv, which may be of the form N or *N, or aliases thereof.
// It also reports whether a Pointer was present.
func ReceiverNamed(recv *types.Var) (isPtr bool, named *types.Named) {
	t := recv.Type()
	if ptr, ok := aliases.Unalias(t).(*types.Pointer); ok {
		isPtr = true
		t = ptr.Elem()
	}

  Scope root = Scope::NewRootScope().ExitOnError();

  Output recv = ops::_Recv(root.WithOpName("recv"), DT_BOOL, "tensor", "sender",
                           0, "receiver");
  Output value = ops::Placeholder(root.WithOpName("value"), DT_BOOL);
  ops::Switch sw(root.WithOpName("switch"), value, recv);
  Output logical_and =
      ops::LogicalAnd(root.WithOpName("and"), recv, sw.output_true);

  std::unique_ptr<DeadnessAnalysis> result;

		}
		return fmt.Sprintf("types.NewArray(%s, %d)", i.subtype(t.Elt), intconst(t.Len))
	case *ast.ChanType:
		dir := "types.Cboth"
		switch t.Dir {
		case ast.SEND:
			dir = "types.Csend"
		case ast.RECV:
			dir = "types.Crecv"
		}
		return fmt.Sprintf("types.NewChan(%s, %s)", i.subtype(t.Value), dir)
	case *ast.FuncType:
		return fmt.Sprintf("newSig(%s, %s)", i.fields(t.Params, false), i.fields(t.Results, false))

					if r.Implicit() {
						n.Y = r.X
					}
				}
				if n.Y.Op() != ir.ORECV {
					base.ErrorfAt(n.Pos(), errors.InvalidSelectCase, "select assignment must have receive on right hand side")
					break
				}
				oselrecv2(n.X, n.Y, n.Def)

			case ir.OAS2RECV:
				n := n.(*ir.AssignListStmt)
				if n.Rhs[0].Op() != ir.ORECV {

	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/sleep"
)

type slowClientStream struct {
	grpc.ClientStream
	recv, send time.Duration
}

func (w *slowClientStream) RecvMsg(m any) error {
	if w.recv > 0 {
		sleep.UntilContext(w.Context(), w.recv)
		log.Infof("delayed recv for %v", w.recv)
	}
	return w.ClientStream.RecvMsg(m)
}

func (w *slowClientStream) SendMsg(m any) error {
	if w.send > 0 {

// license that can be found in the LICENSE file.

package main

type Recv <-chan int

type sliceOf[E any] interface {
	~[]E
}

func _Append[S sliceOf[T], T any](s S, t ...T) S {
	return append(s, t...)
}

func main() {
	recv := make(Recv)
	a := _Append([]Recv{recv}, recv)
	if len(a) != 2 || a[0] != recv || a[1] != recv {
		panic(a)
	}

	recv2 := make(chan<- int)

	go sel(ca[0], ca[1], ca[2], ca[3], nc, nc, nc, nc)
}

// select send to direct recv
func test3(c int) {
	ca := mkchan(c, 4)

	changeNproc(4)
	go recv(ca[0])
	go recv(ca[1])
	go recv(ca[2])
	go recv(ca[3])

	changeNproc(1)
	go sel(nc, nc, nc, nc, ca[0], ca[1], ca[2], ca[3])
}

// select send to select recv
func test4(c int) {
	ca := mkchan(c, 4)

	changeNproc(2)

				}
				if cause != "" {
					check.errorf(recv, InvalidRecv, "invalid receiver type %s (%s)", rtyp, cause)
				}
			case *Basic:
				check.errorf(recv, InvalidRecv, "cannot define new methods on non-local type %s", rtyp)
			default:
				check.errorf(recv, InvalidRecv, "invalid receiver type %s", recv.typ)
			}
		}).describef(recv, "validate receiver %s", recv)
	}

	sig.params = NewTuple(params...)

	shouldPanic(func() { c.Nbsend(1) })

	// the value should have been discarded.
	if x := c.Recv(); x != 0 {
		println("test1: recv on closed got non-zero after send on closed:", x, c.Impl())
		failed = true
	}

	// similarly Send.
	shouldPanic(func() { c.Send(2) })
	if x := c.Recv(); x != 0 {
		println("test1: recv on closed got non-zero after send on closed:", x, c.Impl())
		failed = true
	}
}