// limit.
	SizeError error
}

// Err returns an error if [CheckedFiles] does not describe a valid module zip
// file. [CheckedFiles.SizeError] is returned if that field is set.
// A [FileErrorList] is returned
// if there are one or more invalid files. Other errors may be returned in the
// future.
func (cf CheckedFiles) Err() error {
	if cf.SizeError != nil {
		return cf.SizeError
	}
	if len(cf.Invalid) > 0 {

func IsRegisterShift(r ScanToken) bool {
	return ROT <= r && r <= LSH // Order looks backwards because these are negative.
}

func (t ScanToken) String() string {
	switch t {
	case scanner.EOF:
		return "EOF"
	case scanner.Ident:
		return "identifier"
	case scanner.Int:
		return "integer constant"
	case scanner.Float:
		return "float constant"
	case scanner.Char:
		return "rune constant"
	case scanner.String:

// beginning of the line is returned. The rest of the line will be returned
// from future calls. isPrefix will be false when returning the last fragment
// of the line. The returned buffer is only valid until the next call to
// ReadLine. ReadLine either returns a non-nil line or it returns an error,
// never both.
//
// The text returned from ReadLine does not include the line end ("\r\n" or "\n").

	}
}

func compressor(method uint16) Compressor {
	ci, ok := compressors.Load(method)
	if !ok {
		return nil
	}
	return ci.(Compressor)
}

func decompressor(method uint16) Decompressor {
	di, ok := decompressors.Load(method)
	if !ok {
		return nil
	}
	return di.(Decompressor)

	if v != 3 {
		t.Fatalf("cache.Do(2) did not run f")
	}
	v = cache.Do(1, func() int { n++; return n })
	if v != 2 {
		t.Fatalf("cache.Do(1) did not returned saved value from original cache.Do(1)")
	}

// returned. Otherwise, n is returned, and recorded in the Context for the hash
// h.
func (ctxt *Context) update(h string, orig Type, targs []Type, inst Type) Type {
	assert(inst != nil)

	ctxt.mu.Lock()
	defer ctxt.mu.Unlock()

	for _, e := range ctxt.typeMap[h] {
		if inst == nil || Identical(inst, e.instance) {
			return e.instance
		}
		if debug {

// go command's idea of its own version as returned by Local.
var TestVersion string

// Local returns the local Go version, the one implemented by this go command.
func Local() string {
	v, _ := local()
	return v
}

// LocalToolchain returns the local toolchain name, the one implemented by this go command.
func LocalToolchain() string {
	_, t := local()
	return t
}

func local() (goVers, toolVers string) {

// the MVS algorithms parallelize the traversal to overlap network delays.
type Reqs interface {
	// Required returns the module versions explicitly required by m itself.
	// The caller must not modify the returned list.
	Required(m module.Version) ([]module.Version, error)

	// Max returns the maximum of v1 and v2 (it returns either v1 or v2)
	// in the module with path p.
	//
	// For all versions v, Max(v, "none") must be v,

			if err != nil {
				if !data.expectErr {
					t.Errorf("libname returned an error %q, expected a name", err.Error())
				}
			} else if data.expectErr {
				t.Errorf("libname returned %q, expected an error", computed)
			} else {
				expected := prefix + data.expected + suffix
				if expected != computed {
					t.Errorf("libname returned %q, expected %q", computed, expected)
				}
			}
		}()
	}
}

// then the signature and field are renamed to
//
//	fmt.Sprintf("#rv%d", i+1)`
//
// the newly named object is inserted into the signature's scope,
// and the object and new field name are returned.
//
// The intended use for RenameResult is to allow rangefunc to assign results within a closure.
// This is a hack, as narrowly targeted as possible to discourage abuse.