m.Value = Value{kind: ValueUint64, scalar: e.base.args[0]}
	default:
		panic(fmt.Sprintf("internal error: unexpected event type for Metric kind: %s", go122.EventString(e.base.typ)))
	}
	return m
}

// Label returns details about a Label event.
//
// Panics if Kind != EventLabel.
func (e Event) Label() Label {
	if e.Kind() != EventLabel {
		panic("Label called on non-Label event")
	}
	if e.base.typ != go122.EvGoLabel {

  -ZP0 value
    	a flag whose String method panics when it is zero
  -ZP1 value
    	a flag whose String method panics when it is zero
  -maxT timeout
    	set timeout for dial

panic calling String method on zero flag_test.zeroPanicker for flag ZP0: panic!
panic calling String method on zero flag_test.zeroPanicker for flag ZP1: panic!
`

func TestPrintDefaults(t *testing.T) {

// The result is never nil.
// Repeat panics if count is negative or if the result of (len(x) * count)
// overflows.
func Repeat[S ~[]E, E any](x S, count int) S {
	if count < 0 {
		panic("cannot be negative")
	}

	const maxInt = ^uint(0) >> 1
	if hi, lo := bits.Mul(uint(len(x)), uint(count)); hi > 0 || lo > maxInt {
		panic("the result of (len(x) * count) overflows")
	}

	defer func() {
		mustNotRecover()
	}()
	panic(1)
}

func test2() {
	// Recover only sees the panic argument
	// if it is called from a deferred call.
	// It does not see the panic when called from a call within a deferred call (too late)
	// nor does it see the panic when it *is* the deferred call (too early).
	defer mustRecover(2)
	defer recover() // should be no-op
	panic(2)
}

func test3() {

// y == 0 (division by zero) but, unlike Div, it doesn't panic on a
// quotient overflow.
func Rem(hi, lo, y uint) uint {
	if UintSize == 32 {
		return uint(Rem32(uint32(hi), uint32(lo), uint32(y)))
	}
	return uint(Rem64(uint64(hi), uint64(lo), uint64(y)))
}

// Rem32 returns the remainder of (hi, lo) divided by y. Rem32 panics

	r.PolicyRule.NonResourceURLs = combine(r.PolicyRule.NonResourceURLs, urls)
	return r
}

// RuleOrDie calls the binding method and panics if there is an error.
func (r *PolicyRuleBuilder) RuleOrDie() PolicyRule {
	ret, err := r.Rule()
	if err != nil {
		panic(err)
	}
	return ret
}

func combine(s1, s2 []string) []string {
	s := sets.NewString(s1...)
	s.Insert(s2...)
	return s.List()
}

// This is used to try hard to get a panic stack trace out when exiting.
var runningPanicDefers atomic.Uint32

// panicking is non-zero when crashing the program for an unrecovered panic.
var panicking atomic.Uint32

// paniclk is held while printing the panic information and stack trace,
// so that two concurrent panics don't overlap their output.
var paniclk mutex

	f, exact = quotToFloat64(x.a.abs, b)
	if x.a.neg {
		f = -f
	}
	return
}

// SetFrac sets z to a/b and returns z.
// If b == 0, SetFrac panics.
func (z *Rat) SetFrac(a, b *Int) *Rat {
	z.a.neg = a.neg != b.neg
	babs := b.abs
	if len(babs) == 0 {
		panic("division by zero")
	}
	if &z.a == b || alias(z.a.abs, babs) {
		babs = nat(nil).set(babs) // make a copy
	}
	z.a.abs = z.a.abs.set(a.abs)

// or panics if the parse fails.
func mustParseEtcdVersionPair(s string) *EtcdVersionPair {
	pair, err := ParseEtcdVersionPair(s)
	if err != nil {
		panic(err)
	}
	return pair
}

// mustParseSupportedVersions parses a comma separated list of etcd versions or panics if the parse fails.
func mustParseSupportedVersions(list []string) SupportedVersions {

		fn(ctx, r)
	}
	if ReallyCrash {
		// Actually proceed to panic.
		panic(r)
	}
}

// logPanic logs the caller tree when a panic occurs (except in the special case of http.ErrAbortHandler).
func logPanic(ctx context.Context, r interface{}) {
	if r == http.ErrAbortHandler {
		// honor the http.ErrAbortHandler sentinel panic value:
		//   ErrAbortHandler is a sentinel panic value to abort a handler.