return curCtx, false, err
	}
	// If we have a goroutine, it must be running.
	if state, ok := o.gStates[curCtx.G]; ok && state.status != go122.GoRunning {
		return curCtx, false, fmt.Errorf("%s event for goroutine that's not %s", go122.EventString(ev.typ), GoRunning)
	}
	// This goroutine created another. Add a state for it.
	newgid := GoID(ev.args[0])
	if _, ok := o.gStates[newgid]; ok {