linux-kernel - Re: [PATCH 1/3] rust: sync: implement `Default` for `LockClassKey`

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Message-ID: <0d6378ce-8099-4e04-b4a2-3663f01b8d9e@proton.me>
Date: Tue, 02 Apr 2024 23:12:45 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Miguel Ojeda <ojeda@...nel.org>, Wedson Almeida Filho <wedsonaf@...il.com>, Alex Gaynor <alex.gaynor@...il.com>
Cc: Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, Andreas Hindborg <a.hindborg@...sung.com>, Alice Ryhl <aliceryhl@...gle.com>, rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, patches@...ts.linux.dev
Subject: Re: [PATCH 1/3] rust: sync: implement `Default` for `LockClassKey`

On 01.04.24 23:23, Miguel Ojeda wrote:
> In the upcoming Rust 1.78.0, Clippy suggests to implement `Default` even
> when `new()` is `const`, since `Default::default()` may call `const`
> functions even if it is not `const` itself [1]:
> 
>      error: you should consider adding a `Default` implementation for `LockClassKey`
>        --> rust/kernel/sync.rs:31:5
>         |
>      31 | /     pub const fn new() -> Self {
>      32 | |         Self(Opaque::uninit())
>      33 | |     }
>         | |_____^
> 
> Thus implement it.
> 
> Link: https://github.com/rust-lang/rust-clippy/pull/10903 [1]
> Signed-off-by: Miguel Ojeda <ojeda@...nel.org>
> ---
>   rust/kernel/sync.rs | 6 ++++++
>   1 file changed, 6 insertions(+)

Reviewed-by: Benno Lossin <benno.lossin@...ton.me>

-- 
Cheers,
Benno