// physical frame forward.
	for _, elided := range []int{0, 1, 10} {
		t.Run(fmt.Sprintf("elided=%d", elided), func(t *testing.T) {
			n := elided + runtime.TracebackInnerFrames + runtime.TracebackOuterFrames

			// Start a new goroutine so we have control over the whole stack.
			stackChan := make(chan string)
			go tteStack(n, stackChan)
			stack := <-stackChan

var Memmove = memmove
var MemclrNoHeapPointers = memclrNoHeapPointers

var CgoCheckPointer = cgoCheckPointer

const CrashStackImplemented = crashStackImplemented

const TracebackInnerFrames = tracebackInnerFrames
const TracebackOuterFrames = tracebackOuterFrames

var MapKeys = keys
var MapValues = values

var LockPartialOrder = lockPartialOrder

type TimeTimer = timeTimer

type LockRank lockRank