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Message-ID: <fxg6zacf3cvsjklt5rha6ty2qbxvthwuo352dxtzlmo4upqumu@42j5ziybhe6p>
Date: Tue, 19 Mar 2024 16:37:21 +0000
From: NRK <nrk@...root.org>
To: musl@...ts.openwall.com
Cc: Jāāā Gustedt <jens.gustedt@...ia.fr>,
Aaron Peter Bachmann <aaron_ng@...de.at>
Subject: Re: c23 memset_explicit()
> I'm not sure what the builtin thing was.
IIRC, the idea was that if memset_explicit() is recognized by compilers
then they can make better decision. E.g if the data is held in a
register without any further copy in memory, then compiler can just
clear the register instead of spilling it onto the stack and calling
memset_explicit() on it.
But that's not really relevant for libcs trying to add support for it.
Both of them can co-exist.
- NRK
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