func TestStdcallAndCDeclCallbacks(t *testing.T) {
	if _, err := exec.LookPath("gcc"); err != nil {
		t.Skip("skipping test: gcc is missing")
	}
	tmp := t.TempDir()

	oldRegs := runtime.SetIntArgRegs(abi.IntArgRegs)
	defer runtime.SetIntArgRegs(oldRegs)

	for _, dll := range cbDLLs {
		t.Run(dll.name, func(t *testing.T) {
			dllPath := dll.build(t, tmp)
			dll := syscall.MustLoadDLL(dllPath)
			defer dll.Release()

						// or the input is dead, free the registers. This may make room
						// for other inputs.
						oldregs := s.values[v.Args[i.idx].ID].regs
						if oldregs&^regspec.clobbers == 0 || !s.liveAfterCurrentInstruction(v.Args[i.idx]) {
							s.freeRegs(oldregs &^ mask &^ s.nospill)
							freed = true
						}
					}
				}
				if !freed {
					break
				}
			}

		newRS.Status.AvailableReplicas = int32(test.readyPodsFromNewRS)
		oldRS := rs("foo-old", test.oldReplicas, oldSelector, noTimestamp)
		oldRS.Status.AvailableReplicas = int32(test.readyPodsFromOldRS)
		oldRSs := []*apps.ReplicaSet{oldRS}
		allRSs := []*apps.ReplicaSet{oldRS, newRS}
		maxSurge := intstr.FromInt32(0)

				newRes, newExists := results[key]
				// Find the old O object
				oldRes, oldExists := h.collectionState.outputs[key]
				e := Event[O]{}
				if newExists && oldExists {
					if equal(newRes, oldRes) {
						// NOP change, skip
						continue
					}
					e.Event = controllers.EventUpdate
					e.New = &newRes
					e.Old = &oldRes
					h.collectionState.outputs[key] = newRes
				} else if newExists {

		}
		patchBytes, err := genPatchBytes(oldRes, modRes, typ)
		if err != nil {
			return nil, err
		}
		return c.Istio().SecurityV1beta1().AuthorizationPolicies(orig.Namespace).
			Patch(context.TODO(), orig.Name, typ, patchBytes, metav1.PatchOptions{FieldManager: "pilot-discovery"})
	case gvk.DestinationRule:
		oldRes := &apiistioioapinetworkingv1alpha3.DestinationRule{
			ObjectMeta: origMeta,

		test := tests[i]

		var oldRSs []*apps.ReplicaSet
		var expected []runtime.Object

		for n, size := range test.oldRSSizes {
			rs := newReplicaSet(test.d, fmt.Sprintf("%s-%d", test.d.Name, n), size)
			oldRSs = append(oldRSs, rs)

			rsCopy := rs.DeepCopy()

			zero := int32(0)
			rsCopy.Spec.Replicas = &zero
			expected = append(expected, rsCopy)

	oldRSs, cleanupCount, err := dc.cleanupUnhealthyReplicas(ctx, oldRSs, deployment, maxScaledDown)
	if err != nil {
		return false, nil
	}
	logger.V(4).Info("Cleaned up unhealthy replicas from old RSes", "count", cleanupCount)

	// Scale down old replica sets, need check maxUnavailable to ensure we can scale down
	allRSs = append(oldRSs, newRS)

				return
			}
			if len(test.expectedOld) != len(test.oldRSs) {
				t.Errorf("%s: expected %d old replica sets, got %d", test.name, len(test.expectedOld), len(test.oldRSs))
				return
			}
			for n := range test.oldRSs {
				rs := test.oldRSs[n]
				expected := test.expectedOld[n]
				if *(expected.Spec.Replicas) != nameToSize[rs.Name] {

	newEPS := obj.(*discovery.EndpointSlice)
	oldEPS := old.(*discovery.EndpointSlice)

	// Increment generation if anything other than meta changed
	// This needs to be changed if a status attribute is added to EndpointSlice
	ogNewMeta := newEPS.ObjectMeta
	ogOldMeta := oldEPS.ObjectMeta
	newEPS.ObjectMeta = metav1.ObjectMeta{}
	oldEPS.ObjectMeta = metav1.ObjectMeta{}

	// Don't create a new RS if not already existed, so that we avoid scaling up before scaling down.
	newRS, oldRSs, err := dc.getAllReplicaSetsAndSyncRevision(ctx, d, rsList, false)
	if err != nil {
		return err
	}
	allRSs := append(oldRSs, newRS)
	activeOldRSs := controller.FilterActiveReplicaSets(oldRSs)

	// scale down old replica sets.
	scaledDown, err := dc.scaleDownOldReplicaSetsForRecreate(ctx, activeOldRSs, d)