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fix bug in WriteBufferFromVector
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@ -36,8 +36,10 @@ private:
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throw Exception("WriteBufferFromVector is finished", ErrorCodes::CANNOT_WRITE_AFTER_END_OF_BUFFER);
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size_t old_size = vector.size();
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/// pos may not be equal to vector.data() + old_size, because WriteBuffer::next() can be used to flush data
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size_t pos_offset = pos - reinterpret_cast<Position>(vector.data());
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vector.resize(old_size * size_multiplier);
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internal_buffer = Buffer(reinterpret_cast<Position>(vector.data() + old_size), reinterpret_cast<Position>(vector.data() + vector.size()));
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internal_buffer = Buffer(reinterpret_cast<Position>(vector.data() + pos_offset), reinterpret_cast<Position>(vector.data() + vector.size()));
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working_buffer = internal_buffer;
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}
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