GH-45126: [C++][Parquet] Fix undefined behavior in the FormatStatValue #45127
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Component: Parquet
Component: C++
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mapleFU
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Dec 30, 2024
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Rationale for this change
FormatStatValue function in the parquet/types.cc employs reinterpret_cast to cast bytes to specific data types. It is undefined behavior when the bytes are unaligned.
What changes are included in this PR?
Use std::memcpy to replace reinterpret_cast.
Are these changes tested?
Pass CI.
Are there any user-facing changes?
No.