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Fixed UB #3926

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This commit is contained in:
Alexey Milovidov 2018-12-26 07:12:14 +03:00
parent 3d3385139b
commit fc39ce8673
1 changed files with 5 additions and 2 deletions
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7
dbms/src/AggregateFunctions/AggregateFunctionGroupArray.h
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@ -121,8 +121,11 @@ public:
offsets_to.push_back(offsets_to.back() + size);
typename ColumnVector<T>::Container & data_to = static_cast<ColumnVector<T> &>(arr_to.getData()).getData();
data_to.insert(this->data(place).value.begin(), this->data(place).value.end());
if (size)
{
typename ColumnVector<T>::Container & data_to = static_cast<ColumnVector<T> &>(arr_to.getData()).getData();
data_to.insert(this->data(place).value.begin(), this->data(place).value.end());
}
}
bool allocatesMemoryInArena() const override