remain--
	}

	return *(*string)(unsafe.Pointer(&b))
}

// generate random object name.
func getRandomObjectName() string {
	return randString(16)
}

// generate random bucket name.
func getRandomBucketName() string {
	return randString(60)
}

// construct URL for http requests for bucket operations.

		// Upload objects which modtime as one week ago, supposed to be expired by ILM
		for range upload.expired {
			_, err := obj.PutObject(context.Background(), upload.bucket, randString(32),
				mustGetPutObjReader(t,
					bytes.NewBufferString(objContent),
					int64(len(objContent)),
					hex.EncodeToString(objMd5[:]),
					""),
				ObjectOptions{MTime: oneWeekAgo},
			)