Masanori Ogino 𓀁: "この手のやつだとmemset_explicit（最適化で消え…" - :don:

Masanori Ogino 𓀁 @omasanori@mstdn.maud.io

この手のやつだとmemset_explicit（最適化で消えないmemset。OpenBSDでいうexplicit_bzeroみたいなやつ。ゼロクリア以外もできるけど）がC23に入りますね。

Mar 25, 2023, 11:23 AM·

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Masanori Ogino 𓀁 @omasanori

https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2897.htm

www.open-std.org`memset_explicit`Sensitive data, like passwords or keying data, should be cleared from memory as soon as they are not needed. This requires ensuring the compiler will not optimize the memory overwrite away. This proposal adds a `memset_explicit` function that allows users to express that a memory area needs to be actually cleared.

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