compilation issue in Windows(Visual studio) due to memcpy_s

[jagaKarthi22]

Hi,
memset_s function is introduced in below commit.
30170d6

But memset_s is not available in windows API. This causes compilation in Visual studio to break.

The previous implementation to securely zero out memory(Volatile pointer with memset) will do the same as memset_s function. ie.) Compiler won't optimize operations made on volatile data.

Can we revert back to memset (with volatile pointer) ?

[BillyDonahue]

I have no really opinion on memset or memset_s right now, but the volatile was worthless and should not be restored.
See PR #1228.

"I think we want the C11 memset_s on platforms on which it's available."

It sounds like we just need better detection logic for determining those platforms.
Maybe Meson knows how to check for it autoconf style. I don't know Meson though.