// buffer becomes too large, ReadFrom will panic with [ErrTooLarge].
func (b *Buffer) ReadFrom(r io.Reader) (n int64, err error) {
	b.lastRead = opInvalid
	for {
		i := b.grow(MinRead)
		b.buf = b.buf[:i]
		m, e := r.Read(b.buf[i:cap(b.buf)])
		if m < 0 {
			panic(errNegativeRead)
		}

		b.buf = b.buf[:i+m]
		n += int64(m)
		if e == io.EOF {
			return n, nil // e is EOF, so return nil explicitly
		}
		if e != nil {

// copy object part. This API requires having specific start and end  range values
// e.g. 'bytes=3-10'. Other use cases will be rejected.
func checkCopyPartRangeWithSize(rs *HTTPRangeSpec, resourceSize int64) (err error) {
	if rs == nil {
		return nil
	}
	if rs.IsSuffixLength || rs.Start >= resourceSize || rs.End >= resourceSize {
		return errInvalidRangeSource
	}
	return nil

	}
	return s
}

// Return a function which update the global stats related to tcp connections
func setupReqStatsUpdate(req *http.Request) (*http.Request, func()) {
	var dialStart, dialEnd int64
	start := time.Now()
	trace := &httptrace.ClientTrace{
		GotFirstResponseByte: func() {
			atomic.AddUint64(&globalStats.tcpTimeForFirstByteTotalDur, uint64(time.Since(start)))
		},

func (i storageMetric) String() string {
	if i >= storageMetric(len(_storageMetric_index)-1) {
		return "storageMetric(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _storageMetric_name[_storageMetric_index[i]:_storageMetric_index[i+1]]

		t.Errorf("Should got error with invalid SQL")
	}

	if DB.Where("sdsd.zaaa = ?", "sd;;;aa").Find(&User{}).Error == nil {
		t.Errorf("Should got error with invalid SQL")
	}

	var count1, count2 int64
	DB.Model(&User{}).Count(&count1)
	if count1 <= 0 {
		t.Errorf("Should find some users")
	}

	if DB.Where("name = ?", "jinzhu; delete * from users").First(&User{}).Error == nil {

}

func (rs *rebalanceStats) update(bucket string, fi FileInfo) {
	if fi.IsLatest {
		rs.NumObjects++
	}

	rs.NumVersions++
	onDiskSz := int64(0)
	if !fi.Deleted {
		onDiskSz = fi.Size * int64(fi.Erasure.DataBlocks+fi.Erasure.ParityBlocks) / int64(fi.Erasure.DataBlocks)
	}
	rs.Bytes += uint64(onDiskSz)
	rs.Bucket = bucket
	rs.Object = fi.Name
}

type rstats []*rebalanceStats

	Delete(key string)
}

// defaultMaxSize defines the default maximum capacity of the cache.
// Its value is the maximum value of the int64 type, which means that when the cache size is not specified,
// the cache can theoretically store as many elements as possible.
// (1 << 63) - 1 is the maximum value that an int64 type can represent.
const (
	defaultMaxSize = math.MaxInt
	// defaultTTL defines the default time-to-live (TTL) for each cache entry.

		tx.AddError(rows.Close())
	}

	currentLogger.Trace(tx.Statement.Context, newLogger.BeginAt, func() (string, int64) {
		return newLogger.SQL, tx.RowsAffected
	}, tx.Error)
	tx.Logger = currentLogger
	return
}

// Pluck queries a single column from a model, returning in the slice dest. E.g.:
//
//	var ages []int64
//	db.Model(&users).Pluck("age", &ages)
func (db *DB) Pluck(column string, dest interface{}) (tx *DB) {

		return err
	}
	defer a.CloseRespFn(resp.Body)

	return nil
}

type serviceRTTMinuteStats struct {
	statsTime           time.Time
	rttMsSum, maxRttMs  float64
	successRequestCount int64
	failedRequestCount  int64
}

type metrics struct {
	sync.Mutex
	LastCheckSuccess time.Time
	LastCheckFailure time.Time
	lastFullMinute   serviceRTTMinuteStats
	currentMinute    serviceRTTMinuteStats
}

		t.Errorf("UpdatedAt should be updated")
	}

	var animals []Animal
	DB.Find(&animals)
	if count := DB.Model(Animal{}).Where("1=1").Update("CreatedAt", time.Now().Add(2*time.Hour)).RowsAffected; count != int64(len(animals)) {
		t.Error("RowsAffected should be correct when do batch update")
	}

	animal = Animal{From: "somewhere"}              // No name fields, should be filled with the default value (galeone)