https://clickhouse-test-reports.s3.yandex.net/17375/99073c26ee2692f8efe2ab14b2d8ae0fd813b80e/fuzzer/fuzzer.log

```
SELECT
    k,
    topK(v)
FROM 
(
    SELECT
        number % 7 AS k,
        arrayMap(x -> arrayMap(x -> if(x = 0, NULL, toString(x)), range(x)), range(intDiv(number, 1))) AS v
    FROM system.numbers
    LIMIT 257
)
GROUP BY k
ORDER BY k ASC
```
{
        Cell::State::read(rb);
        destroyElements();
        this->clearHasZero();
        m_size = 0;
        size_t new_size = 0;
        DB::readVarUInt(new_size, rb);
        free();
        Grower new_grower = grower;
        new_grower.set(new_size);
        alloc(new_grower);
        for (size_t i = 0; i < new_size; ++i)
        {
            Cell x;
            x.read(rb);
            insert(x.getValue());
        }
    }
    void readText(DB::ReadBuffer & rb)