for _, op := range operands {
		p.start(op)
		if name, abi, ok := p.funcAddress(); ok {
			fmt.Fprintf(w, "ref %s %s\n", name, abi)
		}
	}
}

func (p *Parser) start(operand []lex.Token) {
	p.input = operand
	p.inputPos = 0
}

// address parses the operand into a link address structure.
func (p *Parser) address(operand []lex.Token) obj.Addr {
	p.start(operand)
	addr := obj.Addr{}

}

func encodePackage(e *encoder, p *rawPackage) {
	e.String(p.error)
	e.String(p.dir)
	e.Int(len(p.sourceFiles))      // number of source files
	sourceFileOffsetPos := e.Pos() // the pos of the start of the source file offsets
	for range p.sourceFiles {
		e.Int(0)
	}
	for i, f := range p.sourceFiles {
		e.IntAt(e.Pos(), sourceFileOffsetPos+4*i)
		encodeFile(e, f)
	}
}

	intersectMode = "intersect"
	subtractMode  = "subtract"
	percentMode   = "percent"
	pkglistMode   = "pkglist"
	textfmtMode   = "textfmt"
	debugDumpMode = "debugdump"
)

func main() {
	telemetry.Start()

	// First argument should be mode/subcommand.
	if len(os.Args) < 2 {
		usage("missing command selector")
	}

	// Select mode
	var op covOperation
	cmd := os.Args[1]
	switch cmd {

	toolCmd := &exec.Cmd{
		Path:   toolPath,
		Args:   args,
		Stdin:  os.Stdin,
		Stdout: os.Stdout,
		Stderr: os.Stderr,
	}
	err = toolCmd.Start()
	if err == nil {
		c := make(chan os.Signal, 100)
		signal.Notify(c)
		go func() {
			for sig := range c {
				toolCmd.Process.Signal(sig)
			}
		}()
		err = toolCmd.Wait()
		signal.Stop(c)

func setlkw(fd uintptr, lt lockType) error {
	for {
		err := syscall.FcntlFlock(fd, syscall.F_SETLKW, &syscall.Flock_t{
			Type:   int16(lt),
			Whence: io.SeekStart,
			Start:  0,
			Len:    0, // All bytes.
		})
		if err != syscall.EINTR {
			return err
		}
	}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This file implements helper functions for scope position computations.

package syntax

// StartPos returns the start position of n.
func StartPos(n Node) Pos {
	// Cases for nodes which don't need a correction are commented out.
	for m := n; ; {
		switch n := m.(type) {
		case nil:
			panic("nil node")

		// packages

	// type checker will initialize this field with a newly created context.
	Context *Context

	// GoVersion describes the accepted Go language version. The string must
	// start with a prefix of the form "go%d.%d" (e.g. "go1.20", "go1.21rc1", or
	// "go1.21.0") or it must be empty; an empty string disables Go language
	// version checks. If the format is invalid, invoking the type checker will

	{path: queryRepo, query: "v0.0.4-0.20180704023347-3ef0cec634e0", vers: "v0.0.4-0.20180704023347-3ef0cec634e0"},

	// Invalid tags are tested in cmd/go/testdata/script/mod_pseudo_invalid.txt.

	{path: queryRepo, query: "start", vers: "v0.0.0-20180704023101-5e9e31667ddf"},
	{path: queryRepo, query: "5e9e31667ddf", vers: "v0.0.0-20180704023101-5e9e31667ddf"},

		}
		buf := make([]byte, 100)
		n, _ := f.Read(buf)
		s := string(buf[:n])
		if i := strings.Index(s, "\n"); i >= 0 {
			s = s[:i]
		}
		i := strings.Index(s, " start")
		if i < 0 {
			log.Fatalf("time log %s does not begin with start line", os.Getenv("GOBUILDTIMELOGFILE"))
		}
		t, err := time.Parse(time.UnixDate, s[:i])
		if err != nil {
			log.Fatalf("cannot parse time log line %q: %v", s, err)
		}

		cmd.Env = append(cmd.Env, "TOOLEXEC_IMPORTPATH="+a.Package.Desc())
	}

	cmd.Env = append(cmd.Env, env...)
	start := time.Now()
	err = cmd.Run()
	if a != nil && a.json != nil {
		aj := a.json
		aj.Cmd = append(aj.Cmd, joinUnambiguously(cmdline))
		aj.CmdReal += time.Since(start)
		if ps := cmd.ProcessState; ps != nil {
			aj.CmdUser += ps.UserTime()
			aj.CmdSys += ps.SystemTime()
		}
	}