}
		var cdr *decodecounter.CounterDataReader
		cdr, err = decodecounter.NewCounterDataReader(cdf, mr)
		if err != nil {
			return r.fatal("reading counter data file %s: %s", cdf, err)
		}
		r.vis.BeginCounterDataFile(cdf, cdr, p.Origins[k])
		var data decodecounter.FuncPayload
		for {
			ok, err := cdr.NextFunc(&data)
			if err != nil {

		}
		cdfw = nil

		// Decode the same file.
		var cdr *decodecounter.CounterDataReader
		inf, err := os.Open(cfpath)
		defer func() {
			if err := inf.Close(); err != nil {
				t.Fatalf("close failed with: %v", err)
			}
		}()

		if err != nil {
			t.Fatalf("reopening covcounters file: %v", err)
		}
		if cdr, err = decodecounter.NewCounterDataReader(cfpath, inf); err != nil {

func (m *mstate) EndPod(p pods.Pod) {
	m.mm.endPod(*pcombineflag)
}

func (m *mstate) BeginCounterDataFile(cdf string, cdr *decodecounter.CounterDataReader, dirIdx int) {
	dbgtrace(2, "visit counter data file %s dirIdx %d", cdf, dirIdx)
	m.mm.beginCounterDataFile(cdr)
}

func (m *mstate) EndCounterDataFile(cdf string, cdr *decodecounter.CounterDataReader, dirIdx int) {
}

func (m *mstate) VisitFuncCounterData(data decodecounter.FuncPayload) {

func (v *visitor) VisitMetaDataFile(mdf string, mfr *decodemeta.CoverageMetaFileReader) {
	v.metaFileCount++
}
func (v *visitor) BeginCounterDataFile(cdf string, cdr *decodecounter.CounterDataReader, dirIdx int) {
	v.counterFileCount++
}
func (v *visitor) EndCounterDataFile(cdf string, cdr *decodecounter.CounterDataReader, dirIdx int) {}
func (v *visitor) VisitFuncCounterData(payload decodecounter.FuncPayload)                          { v.funcCounterData++ }

		}
		defer cf.Close()
		var cdr *decodecounter.CounterDataReader
		cdr, err = decodecounter.NewCounterDataReader(cdf, cf)
		if err != nil {
			return fmt.Errorf("reading counter data file %s: %s", cdf, err)
		}
		var data decodecounter.FuncPayload
		for {
			ok, err := cdr.NextFunc(&data)
			if err != nil {

	for _, k := range pkeys {
		if _, found := s.imm[k]; !found {
			delete(s.mm.pod.pmm, k)
		}
	}
	s.imm = nil
}

func (s *sstate) BeginCounterDataFile(cdf string, cdr *decodecounter.CounterDataReader, dirIdx int) {
	dbgtrace(2, "visiting counter data file %s diridx %d", cdf, dirIdx)
	if s.inidx != dirIdx {
		if s.inidx > dirIdx {
			// We're relying on having data files presented in