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@7of9

secureCoding > strncpy()の代わり > strndup() > 標準だけど実装されていない

Last updated at Posted at 2015-04-29

引用: C/C++ セキュアコーディング 第2版 by Robert C. Seacordら

動的メモリ割り当て関数 ISO/IEC TR 24731-2 [ISO/IEC TR 24731-2:2010]は、strncpy()の代替関数として使用可能な関数として、strndup()関数を定義している。

[SO](http://stackoverflow.com/questions/6062822/whats-wrong-with-strndup)

string.hにstrdnup()が見つからないよ、という質問。理由は以下のようだ。

by Mat
strndup is "standard", but that standard is not implemented widely (yet). It's been present in GLIBC as an extension for quite a while. (But +1 anyway, malloc + strcpy is a good workaround.)

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