}
			total += uint64(v.lp.last - v.lp.first)
			if maxfile < v.f {
				maxfile = v.f
			}
			if minline > v.lp.first {
				minline = v.lp.first
			}
			if maxline < v.lp.last {
				maxline = v.lp.last
			}
		}
		f.LogStat("SUM_LINE_RANGE", total, "MAXMIN_LINE_RANGE", maxline-minline, "MAXFILE", maxfile, "NFILES", len(entries))
	}

	return info, nil
}

func (r *vcsRepo) Latest(ctx context.Context) (*RevInfo, error) {
	return r.Stat(ctx, "latest")
}

func (r *vcsRepo) ReadFile(ctx context.Context, rev, file string, maxSize int64) ([]byte, error) {
	if rev == "latest" {
		rev = r.cmd.latest
	}
	_, err := r.Stat(ctx, rev) // download rev into local repo
	if err != nil {
		return nil, err
	}

}

func BenchmarkEqualBothUnaligned(b *testing.B) {
	sizes := []int{64, 4 << 10}
	if !isRaceBuilder {
		sizes = append(sizes, []int{4 << 20, 64 << 20}...)
	}
	maxSize := 2 * (sizes[len(sizes)-1] + 8)
	if len(bmbuf) < maxSize {
		bmbuf = make([]byte, maxSize)
	}

	for _, n := range sizes {
		for _, off := range []int{0, 1, 4, 7} {
			buf1 := bmbuf[off : off+n]
			buf2Start := (len(bmbuf) / 2) + off

		return false, nil
	}
	return false, err
}

func (r *gitRepo) ReadZip(ctx context.Context, rev, subdir string, maxSize int64) (zip io.ReadCloser, err error) {
	// TODO: Use maxSize or drop it.
	args := []string{}
	if subdir != "" {
		args = append(args, "--", subdir)
	}
	info, err := r.Stat(ctx, rev) // download rev into local git repo
	if err != nil {

		if ok1 || ok2 {
			return ok1 && ok2
		}
		return x == y
	}
	for _, v := range vectors {
		t.Run(path.Base(v.file), func(t *testing.T) {
			const maxSize = 10 << 10 // 10KiB
			buf := new(bytes.Buffer)
			tw := NewWriter(iotest.TruncateWriter(buf, maxSize))

			for i, tf := range v.tests {
				switch tf := tf.(type) {
				case testHeader:
					err := tw.WriteHeader(&tf.hdr)
					if !equalError(err, tf.wantErr) {

	// ReadFile reads the given file in the file tree corresponding to revision rev.
	// It should refuse to read more than maxSize bytes.
	//
	// If the requested file does not exist it should return an error for which
	// os.IsNotExist(err) returns true.
	ReadFile(ctx context.Context, rev, file string, maxSize int64) (data []byte, err error)

	// ReadZip downloads a zip file for the subdir subdirectory

		return err
	}
	defer os.Remove(f.Name())
	defer f.Close()
	maxSize := int64(codehost.MaxZipFile)
	lr := &io.LimitedReader{R: dl, N: maxSize + 1}
	if _, err := io.Copy(f, lr); err != nil {
		dl.Close()
		return err
	}
	dl.Close()
	if lr.N <= 0 {
		return fmt.Errorf("downloaded zip file too large")
	}
	size := (maxSize + 1) - lr.N
	if _, err := f.Seek(0, 0); err != nil {
		return err
	}