initRewrite()

	const maxWeight = 2 << 20
	var buf, errBuf strings.Builder
	s := newSequencer(maxWeight, &buf, &errBuf)
	s.Add(fileWeight(fn, info), func(r *reporter) error {
		return processFile(fn, info, nil, r)
	})
	if s.GetExitCode() == 0 {
		t.Fatal("rewrite of read-only file succeeded unexpectedly")
	}
	if errBuf.Len() > 0 {
		t.Log(errBuf)
	}

	info, err = os.Stat(fn)
	if err != nil {
		t.Fatal(err)

func (out *OutBuf) Write16(v uint16) {
	out.arch.ByteOrder.PutUint16(out.encbuf[:], v)
	out.Write(out.encbuf[:2])
}

func (out *OutBuf) Write32(v uint32) {
	out.arch.ByteOrder.PutUint32(out.encbuf[:], v)
	out.Write(out.encbuf[:4])
}

func (out *OutBuf) Write32b(v uint32) {
	binary.BigEndian.PutUint32(out.encbuf[:], v)
	out.Write(out.encbuf[:4])
}

func (out *OutBuf) Write64(v uint64) {

	"fmt"
	"math"
)

type sehbuf struct {
	ctxt *obj.Link
	data []byte
	off  int
}

func newsehbuf(ctxt *obj.Link, nodes uint8) sehbuf {
	// - 8 bytes for the header
	// - 2 bytes for each node
	// - 2 bytes in case nodes is not even
	size := 8 + nodes*2
	if nodes%2 != 0 {
		size += 2
	}
	return sehbuf{ctxt, make([]byte, size), 0}
}

func (b *sehbuf) write8(v uint8) {
	b.data[b.off] = v

			}

			dec := NewDecoder(&buf)
			var decBuf bytes.Buffer
			w := struct{ io.Writer }{&decBuf} // io.Writer only; not io.ReaderFrom
			if _, err := io.CopyBuffer(w, dec, make([]byte, 7)); err != nil || decBuf.Len() != len(input) {
				t.Errorf("decoder.Read(%q*%d) = (%d, %v), want (%d, nil)", test.enc, multiplier, decBuf.Len(), err, len(input))
			}

			if !bytes.Equal(decBuf.Bytes(), input) {

	SYSCALL
	MOVQ	AX, r1+32(FP)
	MOVQ	$0, r2+40(FP)
	CMPL	AX, $-1
	JNE	ok3

	LEAQ	errbuf-128(SP), AX
	MOVQ	AX, sysargs-160(SP)
	MOVQ	$128, sysargs1-152(SP)
	MOVQ	$SYS_ERRSTR, BP
	SYSCALL
	CALL	runtime·exitsyscall(SB) // call via ABI wrapper, ensuring ABIInternal fixed registers are set
	MOVQ	sysargs-160(SP), AX
	MOVQ	AX, errbuf-168(SP)
	CALL	runtime·gostring(SB)
	LEAQ	str-160(SP), SI
	JMP	copyresult3

ok3:

	cmd := exec.Command("go", "run", "-ldflags=-X main.tbd"+sep+"hello -X main.overwrite"+sep+"trumped -X main.nosuchsymbol"+sep+"neverseen", "linkx.go")
	var out, errbuf bytes.Buffer
	cmd.Stdout = &out
	cmd.Stderr = &errbuf
	err := cmd.Run()
	if err != nil {
		fmt.Println(errbuf.String())
		fmt.Println(out.String())
		fmt.Println(err)
		os.Exit(1)
	}

	want := "hello\nhello\nhello\ntrumped\ntrumped\ntrumped\n"

		}
	}

	initParserMode()
	initRewrite()

	const maxWeight = 2 << 20
	var buf, errBuf bytes.Buffer
	s := newSequencer(maxWeight, &buf, &errBuf)
	s.Add(fileWeight(in, info), func(r *reporter) error {
		return processFile(in, info, nil, r)
	})
	if errBuf.Len() > 0 {
		t.Logf("%q", errBuf.Bytes())
	}
	if s.GetExitCode() != 0 {
		t.Fail()
	}

	expected, err := os.ReadFile(out)

 */
func addlibpath(ctxt *Link, srcref, objref, file, pkg, shlib string, fingerprint goobj.FingerprintType) *sym.Library {
	if l := ctxt.LibraryByPkg[pkg]; l != nil {
		return l
	}

	if ctxt.Debugvlog > 1 {
		ctxt.Logf("addlibpath: srcref: %s objref: %s file: %s pkg: %s shlib: %s fingerprint: %x\n", srcref, objref, file, pkg, shlib, fingerprint)
	}

	l := &sym.Library{}
	ctxt.LibraryByPkg[pkg] = l

	tgtCtnt, tgtOk := nextObject(tgtCh)

	var srcEOF, tgtEOF bool

	srcSha256 := sha256.New()
	tgtSha256 := sha256.New()

	for {
		srcSha256.Reset()
		tgtSha256.Reset()

		srcEOF = !srcOk
		tgtEOF = !tgtOk

		// No objects from source AND target: Finish
		if srcEOF && tgtEOF {
			break
		}

		if !srcEOF && srcCtnt.Err != nil {
			log.Fatal(srcCtnt.Err)
		}

// concurrently so the implementation of conn should protect against
// concurrent reads or concurrent writes.
func NewClient(conn io.ReadWriteCloser) *Client {
	encBuf := bufio.NewWriter(conn)
	client := &gobClientCodec{conn, gob.NewDecoder(conn), gob.NewEncoder(encBuf), encBuf}
	return NewClientWithCodec(client)
}

// NewClientWithCodec is like [NewClient] but uses the specified
// codec to encode requests and decode responses.