line1 := "this is line1"
	restData := "this is line2\nthis is line 3\n"
	inbuf := bytes.NewReader([]byte(line1 + "\n" + restData))
	outbuf := new(strings.Builder)
	maxLineLength := len(line1) + len(restData)/2
	l := NewReaderSize(inbuf, maxLineLength)
	line, isPrefix, err := l.ReadLine()
	if isPrefix || err != nil || string(line) != line1 {

		if 0 < b && b < e {
			// list spans multiple lines
			n := 0 // multi-line element count
			line := b
			for _, x := range list {
				xb := p.lineFor(x.Pos())
				xe := p.lineFor(x.End())
				if line < xb {
					// x is not starting on the same
					// line as the previous one ended
					return true
				}
				if xb < xe {
					// x is a multi-line element
					n++
				}
				line = xe

    });

    std::vector<std::string> lines;
    lines.push_back("-------- Quantization Summary --------");
    lines.push_back("Number of quantized layers in the model");
    lines.push_back("--------------------------------");
    lines.push_back(
        absl::StrFormat("%s Count/Total", pad_string("Name", name_col_width)));
    lines.push_back("================================");

	var prefix []byte
	for _, c := range lines[0] {
		if c != '\t' {
			break
		}
		prefix = append(prefix, byte('\t'))
	}
	// Remove prefix from all tabs, fail otherwise.
	for i := range lines {
		line := lines[i]
		// It's OK for the last line to be blank (trailing \n)
		if i == len(lines)-1 && len(line) <= len(prefix) && bytes.TrimSpace(line) == nil {
			lines[i] = []byte{}
			break
		}

	metrics.IPTablesRulesTotal.WithLabelValues(string(utiliptables.TableFilter)).Set(float64(proxier.filterRules.Lines()))
	metrics.IPTablesRulesLastSync.WithLabelValues(string(utiliptables.TableFilter)).Set(float64(proxier.filterRules.Lines()))
	metrics.IPTablesRulesTotal.WithLabelValues(string(utiliptables.TableNAT)).Set(float64(proxier.natRules.Lines() + skippedNatRules.Lines() - deletedChains))

}

var updateResolvConfTests = []struct {
	name    string   // query name
	lines   []string // resolver configuration lines
	servers []string // expected name servers
}{
	{
		name:    "golang.org",
		lines:   []string{"nameserver 8.8.8.8"},
		servers: []string{"8.8.8.8:53"},
	},
	{
		name:    "",
		lines:   nil, // an empty resolv.conf should use defaultNS as name servers
		servers: defaultNS,
	},

	ended := false       // found non-blank, non-// line, so stopped accepting //go:build lines
	inSlashStar := false // in /* */ comment

Lines:
	for len(p) > 0 {
		line := p
		if i := bytes.IndexByte(line, '\n'); i >= 0 {
			line, p = line[:i], p[i+1:]
		} else {
			p = p[len(p):]
		}
		line = bytes.TrimSpace(line)
		if len(line) == 0 && !ended { // Blank line
			// Remember position of most recent blank line.

	// gc error messages continue onto additional lines with leading tabs.
	// Split the output at the beginning of each line that doesn't begin with a tab.
	// <autogenerated> lines are impossible to match so those are filtered out.
	var res []string
	for _, line := range strings.Split(out, "\n") {
		if strings.HasSuffix(line, "\r") { // remove '\r', output by compiler on windows
			line = line[:len(line)-1]
		}

	}

	// For reproducibility, if we are writing a new go line,
	// and we're not explicitly modifying the toolchain line with 'go get toolchain@something',
	// and the go version is one that supports switching toolchains,
	// and the toolchain running right now is newer than the current toolchain line,
	// then update the toolchain line to record the newer toolchain.
	//

  Output b1 =
      ops::Add(root.WithOpName("b1"), sw_1.output_true, sw_0.output_false);

  Output live0 = ops::Add(root.WithOpName("live0"), a0, a1);
  Output live1 = ops::Add(root.WithOpName("live1"), b0, b1);

  Output halfdead0 = ops::Add(root.WithOpName("halfdead0"), a0, b0);
  Output halfdead1 = ops::Add(root.WithOpName("halfdead1"), a1, b1);

  std::unique_ptr<DeadnessAnalysis> result;