When I builded doris be with ubsan enabled and enabled vectorization,
be core dump at doris::DecimalV2Value::operator long(). It cored
because accessing on a non-aligned address by sse.
With ubsan enabled, compile generates different assemble code including
sse instruction.
A sender serializes tuples to a contiguous memory area, while a receiver
just copy it. So we should align each tuple offset to 16 bytes.
For compatibility, we should use a config to control it.
BTW: with tools like ubsan, asan, tsan we can find bugs more easily,
e.g. #8815. It is difficult to find the bug without ubsan.
Anyway, we should use modern tools to be more productive.
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