[問題] C 語言的 Bit fields
關於 C 的 Bit fields 有一個段落不太瞭解，想請教各位一下
在 Cppreference 網頁中提到
http://en.cppreference.com/w/c/language/bit_field
The following properties of bit fields are implementation-defined:
‧...(省略)...
‧Whether a bit field can straddle an allocation unit boundary
請問上文中提到 "straddle" 與 "allocation unit boundary"是什麼意思？
感謝！
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