[問題] 關於memcpy的但書
請問一下
假設memcpy的宣告如下:
void * memcpy ( void * destination, const void * source, size_t num );
則memcpy有兩個但書:
1.To avoid overflows,
the size of the arrays pointed by both the destination and source parameters,
shall be at least num bytes,
2.and should not overlap.
第一個但書我們可以控制
但請問我們要如何確定第二個但書
也就是
如何確保這兩塊memory不會重疊到呢?
謝謝
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※ 編輯: timemaker 來自: 59.112.167.196 (07/10 09:10)
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