br.MustSeek(0, io.SeekStart)

	r.verb(1, "fileView for pod is length %d", len(fileView))

	var mfr *decodemeta.CoverageMetaFileReader
	mfr, err = decodemeta.NewCoverageMetaFileReader(f, fileView)
	if err != nil {
		return r.fatal("decoding meta-file %s: %s", p.MetaFile, err)
	}
	r.vis.VisitMetaDataFile(p.MetaFile, mfr)

	// Read counter data files.
	for k, cdf := range p.CounterDataFiles {
		cf, err := os.Open(cdf)

	m.mm.visitFuncCounterData(data)
}

func (m *mstate) EndCounters() {
}

func (m *mstate) VisitMetaDataFile(mdf string, mfr *decodemeta.CoverageMetaFileReader) {
	m.mm.visitMetaDataFile(mdf, mfr)
}

func (m *mstate) BeginPackage(pd *decodemeta.CoverageMetaDataDecoder, pkgIdx uint32) {
	dbgtrace(3, "VisitPackage(pk=%d path=%s)", pkgIdx, pd.PackagePath())

func (mm *metaMerge) visitMetaDataFile(mdf string, mfr *decodemeta.CoverageMetaFileReader) {
	dbgtrace(2, "visitMetaDataFile(mdf=%s)", mdf)

	// Record meta-data file name.
	mm.pod.mdf = mdf
	// Keep a pointer to the file-level reader.
	mm.pod.mfr = mfr
	// Record file hash.
	mm.pod.fileHash = mfr.FileHash()
	// Counter mode and granularity -- detect and record clashes here.
	newgran := mfr.CounterGranularity()

	}
	defer func() {
		f.Close()
	}()
	var mfr *decodemeta.CoverageMetaFileReader
	mfr, err = decodemeta.NewCoverageMetaFileReader(f, nil)
	if err != nil {
		return fmt.Errorf("error reading meta-data file %s: %v", p.MetaFile, err)
	}
	newmode := mfr.CounterMode()
	if newmode != ts.cmode {

		warn("uint32 overflow during counter merge")
	}
	d.mm[key] = val
}

func (d *dstate) EndCounters() {
}

func (d *dstate) VisitMetaDataFile(mdf string, mfr *decodemeta.CoverageMetaFileReader) {
	newgran := mfr.CounterGranularity()
	newmode := mfr.CounterMode()
	if err := d.cm.SetModeAndGranularity(mdf, newmode, newgran); err != nil {
		fatal("%v", err)
	}
	if d.cmd == debugDumpMode {

				t.Fatalf("seek() on meta-file: %v", err)
			}
		}

		mfr, err := decodemeta.NewCoverageMetaFileReader(inf, fileView)
		if err != nil {
			t.Fatalf("k=%d NewCoverageMetaFileReader failed with: %v", k, err)
		}
		np := mfr.NumPackages()
		if np != 7 {
			t.Fatalf("k=%d wanted 7 packages got %d", k, np)
		}
		md := mfr.CounterMode()
		wmd := coverage.CtrModeAtomic
		if md != wmd {

      for (const auto& field : fields) {
        TF_ASSIGN_OR_RETURN(MutableFieldResult mfr,
                            GetMutableField(merged_message, field));
        merged_message =
            mfr.parent->GetReflection()->MutableMessage(mfr.parent, mfr.field);
      }
      TF_ASSIGN_OR_RETURN(
          std::string chunk,

				if data.Counters[i] == 0 {
					val.Counters[i] = 0
				}
			}
		}
	}
}

func (s *sstate) VisitMetaDataFile(mdf string, mfr *decodemeta.CoverageMetaFileReader) {
	if s.mode == intersectMode {
		s.imm = make(map[pkfunc]struct{})
	}
	s.mm.visitMetaDataFile(mdf, mfr)
}

func (s *sstate) BeginPackage(pd *decodemeta.CoverageMetaDataDecoder, pkgIdx uint32) {
	s.mm.visitPackage(pd, pkgIdx, false)
}

	counterFileCount int
	funcCounterData  int
	metaFuncCount    int
}

func (v *visitor) BeginPod(p pods.Pod) {}
func (v *visitor) EndPod(p pods.Pod)   {}
func (v *visitor) VisitMetaDataFile(mdf string, mfr *decodemeta.CoverageMetaFileReader) {
	v.metaFileCount++
}
func (v *visitor) BeginCounterDataFile(cdf string, cdr *decodecounter.CounterDataReader, dirIdx int) {
	v.counterFileCount++
}

	"⤅":                             "\u2905",
	"М":                             "\u041c",
	" ":                     "\u205f",
	"ℳ":                       "\u2133",
	"𝔐":                             "\U0001d510",
	"∓":                       "\u2213",
	"𝕄":                            "\U0001d544",
	"ℳ":                            "\u2133",