func pidfdFind(_ int) (uintptr, error) {
	return 0, syscall.ENOSYS
}

func (p *Process) pidfdRelease() {}

func (_ *Process) pidfdWait() (*ProcessState, error) {
	panic("unreachable")
}

func (_ *Process) pidfdSendSignal(_ syscall.Signal) error {
	panic("unreachable")

		case f.result <- Event{Added, obj}:
			return
		default:
			panic(fmt.Errorf("channel full"))
		}
	}
}

// Modify sends a modify event.
func (f *RaceFreeFakeWatcher) Modify(obj runtime.Object) {
	f.Lock()
	defer f.Unlock()
	if !f.Stopped {
		select {
		case f.result <- Event{Modified, obj}:
			return
		default:
			panic(fmt.Errorf("channel full"))
		}
	}
}

	if p.mode != modeHandle {
		panic("handleTransientRelease called in invalid mode")
	}

	for {
		state := p.state.Load()
		refs := state &^ processStatusMask
		status := processStatus(state & processStatusMask)
		if refs == 0 {
			// This should never happen because
			// handleTransientRelease is always paired with
			// handleTransientAcquire.
			panic("release of handle with refcount 0")
		}

[short] skip # runs go build
! go build file.go
! stderr 'panic:'
! stderr 'runtime error'
stderr 'file.go:2:1: repeated //go:debug for panicnil'

-- file.go --
//go:debug panicnil=1
//go:debug panicnil=1

package main

func main() {

		t.Errorf("Tick(-1) = %v; want nil", got)
	}
}

// Test that NewTicker panics when given a duration less than zero.
func TestNewTickerLtZeroDuration(t *testing.T) {
	defer func() {
		if err := recover(); err == nil {
			t.Errorf("NewTicker(-1) should have panicked")
		}
	}()
	NewTicker(-1)
}

// Test that Ticker.Reset panics when given a duration less than zero.
func TestTickerResetLtZeroDuration(t *testing.T) {

	}.DecMode()
	if err != nil {
		panic(err)
	}
	return decode
}()

// DecodeLax is derived from Decode, but does not complain about unknown fields in the input.
var DecodeLax cbor.DecMode = func() cbor.DecMode {
	opts := Decode.DecOptions()
	opts.ExtraReturnErrors &^= cbor.ExtraDecErrorUnknownField // clear bit
	dm, err := opts.DecMode()
	if err != nil {
		panic(err)
	}
	return dm

	// Which type of Process do we have?
	switch p.mode {
	case modeHandle:
		// pidfd
		return p.pidfdWait()
	case modePID:
		// Regular PID
		return p.pidWait()
	default:
		panic("unreachable")
	}
}

func (p *Process) pidWait() (*ProcessState, error) {
	// TODO(go.dev/issue/67642): When there are concurrent Wait calls, one
	// may wait on the wrong process if the PID is reused after the

	fl := funcLine{f: fn, base: pos.Base(), line: pos.Line()}
	bPanic := s.panics[fl]
	if bPanic == nil {
		bPanic = s.f.NewBlock(ssa.BlockPlain)
		s.panics[fl] = bPanic
		s.startBlock(bPanic)
		// The panic call takes/returns memory to ensure that the right
		// memory state is observed if the panic happens.
		s.rtcall(fn, false, nil)
	}
	b.AddEdgeTo(bNext)
	b.AddEdgeTo(bPanic)

package syntax

// StartPos returns the start position of n.
func StartPos(n Node) Pos {
	// Cases for nodes which don't need a correction are commented out.
	for m := n; ; {
		switch n := m.(type) {
		case nil:
			panic("nil node")

		// packages
		case *File:
			// file block starts at the beginning of the file
			return MakePos(n.Pos().Base(), 1, 1)

		// declarations
		// case *ImportDecl:
		// case *ConstDecl:

		}
	}
	return loggingOptions
}

// CmdAdd is called for ADD requests
func CmdAdd(args *skel.CmdArgs) (err error) {
	// Defer a panic recover, so that in case if panic we can still return
	// a proper error to the runtime.
	defer func() {
		if e := recover(); e != nil {
			msg := fmt.Sprintf("istio-cni panicked during cmdAdd: %v\n%v", e, string(debug.Stack()))