if ok {
			panic(fmt.Sprintf("TryAcquire succeeded unexpectedly"))
		}
	}()
	wg.Wait()

	ex.Release(p)

	p, ok = ex.TryAcquire()
	if !ok {
		panic(fmt.Sprintf("TryAcquire failed"))
	}
}

func TestRanger() {
	s, r := _Ranger[int]()

	ctx := context.Background()
	go func() {
		// Receive one value then exit.
		v, ok := r.Next(ctx)
		if !ok {

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

package main

import (
	"./a"
	"./b"
)

func main() {
	switch b.I.(type) {
	case a.G[b.T]:
	case int:
		panic("bad")
	case float64:
		panic("bad")
	default:
		panic("bad")
	}

	b.F(a.G[b.T]{})

func main() {
	var a [3]A
	for i := 0; i < 3; i++ {
		a[i] = A{i}
	}
	if a[0][0] != 0 {
		panic("fail a[0][0]")
	}
	if a[1][0] != 1 {
		panic("fail a[1][0]")
	}
	if a[2][0] != 2 {
		panic("fail a[2][0]")
	}
}

/*
uetli:~/Source/go1/test/bugs gri$ 6g bug097.go && 6l bug097.6 && 6.out

panic on line 342 PC=0x13c2
0x13c2?zi
	main·main(1, 0, 1606416416, ...)
	main·main(0x1, 0x7fff5fbff820, 0x0, ...)

		bad = true
	}
	if bad {
		panic("testint1")
	}
}

func testint2() {
	bad := false
	j := 0
	for i := range 4 {
		if i != j {
			println("range var", i, "want", j)
			bad = true
		}
		j++
	}
	if j != 4 {
		println("wrong count ranging over 4:", j)
		bad = true
	}
	if bad {
		panic("testint2")
	}
}

func testint3() {
	bad := false

func (r *result) Return() (runtime.Object, error) {
	switch {
	case r.reason != nil:
		// panic has higher precedence, the goroutine executing ResultFunc has panic'd,
		// so propagate a panic to the caller.
		panic(r.reason)
	case r.err != nil:
		return nil, r.err
	default:
		// if we are here, it means neither a panic, nor an error
		if status, ok := r.object.(*metav1.Status); ok {

package b

import "./a"

type T struct { a int }

var I interface{} = a.G[T]{}

//go:noinline
func F(x interface{}) {
	switch x.(type) {
	case a.G[T]:
	case int:
		panic("bad")
	case float64:
		panic("bad")
	default:
		panic("bad")
	}

package main

func main() {
	var f1 func(int) int
	f1 = g1
	if f1(1) != g1(1) {
		panic(1)
	}

	var f2 func(int) string = g2
	if f2(2) != "" {
		panic(2)
	}

	if g3(g1, 3) != g1(3) {
		panic(3)
	}

	if g4(g2, 4) != "" {
		panic(4)
	}
}

func g1[P any](x P) P    { return x }
func g2[P, Q any](x P) Q { var q Q; return q }

	var a []int
	var c chan int
	var m map[int]int

	close(c)
	copy(a, a)
	delete(m, 0)
	panic(0)
	print("foo")
	println("bar")
	recover()

	(close(c))
	(copy(a, a))
	(delete(m, 0))
	(panic(0))
	(print("foo"))
	(println("bar"))
	(recover())

	go close(c)
	go copy(a, a)
	go delete(m, 0)
	go panic(0)
	go print("foo")
	go println("bar")
	go recover()

	defer close(c)
	defer copy(a, a)

func (n *miniNode) Type() *types.Type       { return nil }
func (n *miniNode) SetType(*types.Type)     { panic(n.no("SetType")) }
func (n *miniNode) Name() *Name             { return nil }
func (n *miniNode) Sym() *types.Sym         { return nil }
func (n *miniNode) Val() constant.Value     { panic(n.no("Val")) }
func (n *miniNode) SetVal(v constant.Value) { panic(n.no("SetVal")) }
func (n *miniNode) NonNil() bool            { return false }

	got := _DoubleElems[MySlice, int](arg)
	if !reflect.DeepEqual(got, want) {
		panic(fmt.Sprintf("got %s, want %s", got, want))
	}

	// constraint type inference
	got = _DoubleElems[MySlice](arg)
	if !reflect.DeepEqual(got, want) {
		panic(fmt.Sprintf("got %s, want %s", got, want))
	}

	got = _DoubleElems(arg)
	if !reflect.DeepEqual(got, want) {
		panic(fmt.Sprintf("got %s, want %s", got, want))
	}