}

func (t *Tokenizer) File() string {
	return t.base.Filename()
}

func (t *Tokenizer) Base() *src.PosBase {
	return t.base
}

func (t *Tokenizer) SetBase(base *src.PosBase) {
	t.base = base
}

func (t *Tokenizer) Line() int {
	return t.line
}

func (t *Tokenizer) Col() int {
	return t.s.Pos().Column
}

func (t *Tokenizer) Next() ScanToken {
	s := t.s
	for {

	r := NewReader(z)

	c := make(chan error)
	go func() {
		_, err := r.ReadByte()
		c <- err
	}()

	select {
	case err := <-c:
		if err == nil {
			t.Error("error expected")
		} else if err != io.ErrNoProgress {
			t.Error("unexpected error:", err)
		}
	case <-time.After(time.Second):
		t.Error("test timed out (endless loop in ReadByte?)")
	}
}

		case 1:
			t.Go = c.uint8
		case 2:
			t.Go = c.uint16
		case 4:
			t.Go = c.uint32
		case 8:
			t.Go = c.uint64
		case 1 + signedDelta:
			t.Go = c.int8
		case 2 + signedDelta:
			t.Go = c.int16
		case 4 + signedDelta:
			t.Go = c.int32
		case 8 + signedDelta:
			t.Go = c.int64
		}

	case *dwarf.FloatType:
		switch t.Size {

	switch m := fs.FileMode(fi.h.Mode) &^ 07777; m {
	case c_ISDIR:
		mode |= fs.ModeDir
	case c_ISFIFO:
		mode |= fs.ModeNamedPipe
	case c_ISLNK:
		mode |= fs.ModeSymlink
	case c_ISBLK:
		mode |= fs.ModeDevice
	case c_ISCHR:
		mode |= fs.ModeDevice
		mode |= fs.ModeCharDevice
	case c_ISSOCK:
		mode |= fs.ModeSocket
	}

	switch fi.h.Typeflag {
	case TypeSymlink:
		mode |= fs.ModeSymlink

	switch op {
	case loong64.ARDTIMELW, loong64.ARDTIMEHW, loong64.ARDTIMED:
		return true
	}
	return false
}

func loong64RegisterNumber(name string, n int16) (int16, bool) {
	switch name {
	case "F":
		if 0 <= n && n <= 31 {
			return loong64.REG_F0 + n, true
		}
	case "FCSR":
		if 0 <= n && n <= 31 {
			return loong64.REG_FCSR0 + n, true
		}
	case "FCC":
		if 0 <= n && n <= 31 {

	mode := fs.FileMode(m & 0777)
	switch m & s_IFMT {
	case s_IFBLK:
		mode |= fs.ModeDevice
	case s_IFCHR:
		mode |= fs.ModeDevice | fs.ModeCharDevice
	case s_IFDIR:
		mode |= fs.ModeDir
	case s_IFIFO:
		mode |= fs.ModeNamedPipe
	case s_IFLNK:
		mode |= fs.ModeSymlink
	case s_IFREG:
		// nothing to do
	case s_IFSOCK:
		mode |= fs.ModeSocket
	}
	if m&s_ISGID != 0 {

func IsARMCMP(op obj.As) bool {
	switch op {
	case arm.ACMN, arm.ACMP, arm.ATEQ, arm.ATST:
		return true
	}
	return false
}

// IsARMSTREX reports whether the op (as defined by an arm.A* constant) is
// one of the STREX-like instructions that require special handling.
func IsARMSTREX(op obj.As) bool {
	switch op {
	case arm.ASTREX, arm.ASTREXD, arm.ASWPW, arm.ASWPBU:
		return true
	}

	}()
	buf2.ReadFrom(panicReader{panic: true})
}

func TestReadFromNegativeReader(t *testing.T) {
	var b Buffer
	defer func() {
		switch err := recover().(type) {
		case nil:
			t.Fatal("bytes.Buffer.ReadFrom didn't panic")
		case error:
			// this is the error string of errNegativeRead
			wantError := "bytes.Buffer: reader returned negative count from Read"
			if err.Error() != wantError {

	// Set the magic values.
	switch {
	case format.has(formatV7):
		// Do nothing.
	case format.has(FormatGNU):
		copy(b.toGNU().magic(), magicGNU)
		copy(b.toGNU().version(), versionGNU)
	case format.has(formatSTAR):
		copy(b.toSTAR().magic(), magicUSTAR)
		copy(b.toSTAR().version(), versionUSTAR)
		copy(b.toSTAR().trailer(), trailerSTAR)
	case format.has(FormatUSTAR | FormatPAX):

	switch GOARCH {
	case "386":
		return archX86(&x86.Link386)
	case "amd64":
		return archX86(&x86.Linkamd64)
	case "arm":
		return archArm()
	case "arm64":
		return archArm64()
	case "loong64":
		return archLoong64(&loong64.Linkloong64)
	case "mips":
		return archMips(&mips.Linkmips)
	case "mipsle":
		return archMips(&mips.Linkmipsle)
	case "mips64":
		return archMips64(&mips.Linkmips64)