linux-kernel - Re: [PATCH 1/2] rust: add BitInt integer wrapping type

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANiq72mg-NntJLf_jbigz++0hK7G3WAxbvejRq1EzOc7GE+doA@mail.gmail.com>
Date: Mon, 3 Nov 2025 15:10:01 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Yury Norov <yury.norov@...il.com>
Cc: Alexandre Courbot <acourbot@...dia.com>, Alice Ryhl <aliceryhl@...gle.com>, 
	Danilo Krummrich <dakr@...nel.org>, Miguel Ojeda <ojeda@...nel.org>, 
	Joel Fernandes <joelagnelf@...dia.com>, Jesung Yang <y.j3ms.n@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Trevor Gross <tmgross@...ch.edu>, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org
Subject: Re: [PATCH 1/2] rust: add BitInt integer wrapping type

On Mon, Nov 3, 2025 at 3:17 AM Yury Norov <yury.norov@...il.com> wrote:
>
> Rust _must_ do the same thing to at least be arithmetically
> compatible to the big brother.

No, Rust doesn't need to do anything of the sort, sorry.

The point here is not to copy what C does, but to improve on it.

In particular, we definitely do not want to have anything like integer
promotions and arithmetic conversions from C.

Cheers,
Miguel