}
		if (formats != FormatUnknown) && (err != nil) {
			t.Errorf("test %d, unexpected error: %v", i, err)
		}
		if (formats == FormatUnknown) && (err == nil) {
			t.Errorf("test %d, got nil-error, want non-nil error", i)
		}
	}
}

func Benchmark(b *testing.B) {
	type file struct {
		hdr  *Header
		body []byte
	}

	vectors := []struct {

// and indicates whether it is
// and returns the path to the package source relative to $GOROOT (or $GOPATH).
func pkgPath() (importPath string, isStd bool, modPath, modDir string, err error) {
	errorf := func(format string, args ...any) (string, bool, string, string, error) {
		return "", false, "", "", fmt.Errorf(format, args...)
	}
	goTool, err := goTool()
	if err != nil {
		return errorf("%w", err)
	}

pkg net, method (*TCPListener) SyscallConn() (syscall.RawConn, error)
pkg net, method (*UnixListener) SyscallConn() (syscall.RawConn, error)
pkg net/smtp, method (*Client) Noop() error
pkg os, func IsTimeout(error) bool
pkg os, method (*File) SetDeadline(time.Time) error
pkg os, method (*File) SetReadDeadline(time.Time) error
pkg os, method (*File) SetWriteDeadline(time.Time) error
pkg os, method (*PathError) Timeout() bool

			hdr     Header
			wantErr error
		}
		testWrite struct { // Write(str) == (wantCnt, wantErr)
			str     string
			wantCnt int
			wantErr error
		}
		testReadFrom struct { // ReadFrom(testFile{ops}) == (wantCnt, wantErr)
			ops     fileOps
			wantCnt int64
			wantErr error
		}
		testClose struct { // Close() == wantErr
			wantErr error
		}

			return arm64.REG_V0 + n, true
		}
	}
	return 0, false
}

// ARM64RegisterShift constructs an ARM64 register with shift operation.
func ARM64RegisterShift(reg, op, count int16) (int64, error) {
	// the base register of shift operations must be general register.
	if reg > arm64.REG_R31 || reg < arm64.REG_R0 {
		return 0, errors.New("invalid register for shift operation")
	}

var importing apiPackage

// Import implements types.Importer.
func (w *Walker) Import(name string) (*types.Package, error) {
	return w.ImportFrom(name, "", 0)
}

// ImportFrom implements types.ImporterFrom.
func (w *Walker) ImportFrom(fromPath, fromDir string, mode types.ImportMode) (*types.Package, error) {
	pkg, err := w.importFrom(fromPath, fromDir, mode)
	if err != nil {
		return nil, err
	}
	return pkg.Package, nil

	MOVF	F2, 0x00ffffff(F2) // ERROR "illegal base register"
	MOVD	F2, 0x00ffffff(F2) // ERROR "illegal base register"
	MULS.S	R1, R2, R3, R4     // ERROR "invalid .S suffix"
	ADD.P	R1, R2, R3         // ERROR "invalid .P suffix"
	SUB.W	R2, R3             // ERROR "invalid .W suffix"
	BL	4(R4)              // ERROR "non-zero offset"
	ADDF	F0, R1, F2         // ERROR "illegal combination"

	SUBW	R7@>2, R5, R16                                   // ERROR "unsupported shift operator"
	SUBS	R7@>2, R5, R16                                   // ERROR "unsupported shift operator"
	SUBSW	R7@>2, R5, R16                                   // ERROR "unsupported shift operator"
	CMP	R7@>2, R5                                        // ERROR "unsupported shift operator"

pkg crypto/tls, method (*Config) DecryptTicket([]uint8, ConnectionState) (*SessionState, error) #60105
pkg crypto/tls, method (*Config) EncryptTicket(ConnectionState, *SessionState) ([]uint8, error) #60105
pkg crypto/tls, method (*QUICConn) Close() error #44886
pkg crypto/tls, method (*QUICConn) ConnectionState() ConnectionState #44886
pkg crypto/tls, method (*QUICConn) HandleData(QUICEncryptionLevel, []uint8) error #44886

pkg net/http/httptrace, type WroteRequestInfo struct, Err error
pkg net/url, type URL struct, ForceQuery bool
pkg os/exec, func CommandContext(context.Context, string, ...string) *Cmd
pkg os/user, func LookupGroup(string) (*Group, error)
pkg os/user, func LookupGroupId(string) (*Group, error)
pkg os/user, method (*User) GroupIds() ([]string, error)
pkg os/user, method (UnknownGroupError) Error() string