for k, v = range []V{zero[V]()} {
	}
	return
}

func RangeSliceIface[V iface]() (k any, v iface) {
	for k, v = range []V{zero[V]()} {
	}
	return
}

func chanOf[T any](elems ...T) chan T {
	c := make(chan T, len(elems))
	for _, elem := range elems {
		c <- elem
	}
	close(c)
	return c
}

	m sync.Map
}

// ChanOf returns the channel type with the given direction and element type.
// For example, if t represents int, ChanOf(RecvDir, t) represents <-chan int.
//
// The gc runtime imposes a limit of 64 kB on channel element types.
// If t's size is equal to or exceeds this limit, ChanOf panics.
func ChanOf(dir ChanDir, t Type) Type {
	typ := t.common()

	{struct{ x (chan<- string) }{}, "chan<- string"},
	{struct{ x (chan<- chan string) }{}, "chan<- chan string"},
	{struct{ x (chan<- <-chan string) }{}, "chan<- <-chan string"},
	{struct{ x (<-chan <-chan string) }{}, "<-chan <-chan string"},
	{struct{ x (chan (<-chan string)) }{}, "chan (<-chan string)"},
	{struct {
		x struct {
			c chan *int32
			d float32
		}
	}{},

func Ranger[T any]() (*Sender[T], *Receiver[T]) {
	c := make(chan T)
	d := make(chan bool)
	s := &Sender[T]{values: c, done: d}
	r := &Receiver[T]{values: c, done: d}
	runtime.SetFinalizer(r, r.finalize)
	return s, r
}

// A sender is used to send values to a Receiver.
type Sender[T any] struct {
	values chan<- T
	done <-chan bool
}

// Send sends a value to the receiver. It returns whether any more

func Ranger[T any]() (*Sender[T], *Receiver[T]) {
	c := make(chan T)
	d := make(chan bool)
	s := &Sender[T]{values: c, done: d}
	r := &Receiver[T]{values: c, done: d}
	runtime.SetFinalizer(r, r.finalize)
	return s, r
}

// A sender is used to send values to a Receiver.
type Sender[T any] struct {
	values chan<- T
	done <-chan bool
}

// Send sends a value to the receiver. It returns whether any more

func Ranger[T any]() (*Sender[T], *Receiver[T]) {
	c := make(chan T)
	d := make(chan bool)
	s := &Sender[T]{values: c, done: d}
	r := &Receiver[T]{values: c, done: d}
	runtime.SetFinalizer(r, r.finalize)
	return s, r
}

// A sender is used to send values to a Receiver.
type Sender[T any] struct {
	values chan<- T
	done   <-chan bool
}

// Send sends a value to the receiver. It returns whether any more

	// operations like close().
	return unsafe.Pointer(&c.buf)
}

func racesync(c *hchan, sg *sudog) {
	racerelease(chanbuf(c, 0))
	raceacquireg(sg.g, chanbuf(c, 0))
	racereleaseg(sg.g, chanbuf(c, 0))
	raceacquire(chanbuf(c, 0))
}

// Notify the race detector of a send or receive involving buffer entry idx
// and a channel c or its communicating partner sg.

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.internal.execution.history.changes;

public interface Change {
    String getMessage();

		randx -= 1000000
	}
	return randx % n
}

type Chan struct {
	sc, rc chan int // send and recv chan
	sv, rv int      // send and recv seq
}

var (
	nproc      int
	nprocLock  sync.Mutex
	cval       int
	end        int = 10000
	totr, tots int
	totLock    sync.Mutex
	nc         *Chan
)

func init() {
	nc = new(Chan)
}

func changeNproc(adjust int) int {
	nprocLock.Lock()

const W = 2    // channel buffering
var h [N]int   // marking of send/recv

func r(c chan int, m int) {
	for {
		select {
		case r := <-c:
			if h[r] != 1 {
				println("r",
					"m=", m,
					"r=", r,
					"h=", h[r])
				panic("fail")
			}
			h[r] = 2
		}
	}
}

func s(c chan int) {
	for n := 0; n < N; n++ {
		r := n
		if h[r] != 0 {
			println("s")
			panic("fail")
		}