case go122.EvGoStatus, go122.EvGoStatusStack:
		// N.B. ordering.advance populates e.base.extra.
		s = goStateTransition(GoID(e.base.args[0]), GoState(e.base.extra(version.Go122)[0]), go122GoStatus2GoState[e.base.args[2]])
	default:
		panic(fmt.Sprintf("internal error: unexpected event type for StateTransition kind: %s", go122.EventString(e.base.typ)))
	}
	return s
}

	gid := GoID(ev.args[0])
	mid := ThreadID(ev.args[1])
	status := go122.GoStatus(ev.args[2])

	if int(status) >= len(go122GoStatus2GoState) {
		return curCtx, false, fmt.Errorf("invalid status for goroutine %d: %d", gid, status)
	}
	oldState := go122GoStatus2GoState[status]
	if s, ok := o.gStates[gid]; ok {
		if s.status != status {