linux-kernel - Re: [PATCH v2 5/5] rust: enable `clippy::as

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Message-ID: <D8EKVM1OP7O5.1GCGYWTV5RBTX@proton.me>
Date: Wed, 12 Mar 2025 20:42:39 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Tamir Duberstein <tamird@...il.com>
Cc: Masahiro Yamada <masahiroy@...nel.org>, Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas@...sle.eu>, Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>, Brendan Higgins <brendan.higgins@...ux.dev>, David Gow <davidgow@...gle.com>, Rae Moar <rmoar@...gle.com>, Bjorn Helgaas <bhelgaas@...gle.com>, Luis Chamberlain <mcgrof@...nel.org>, Russ Weight <russ.weight@...ux.dev>, Rob Herring <robh@...nel.org>, Saravana Kannan <saravanak@...gle.com>, linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org, linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
	linux-pci@...r.kernel.org, linux-block@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 5/5] rust: enable `clippy::as_underscore` lint

On Wed Mar 12, 2025 at 9:07 PM CET, Tamir Duberstein wrote:
> On Wed, Mar 12, 2025 at 3:43 PM Benno Lossin <benno.lossin@...ton.me> wrote:
>>
>> On Wed Mar 12, 2025 at 8:19 PM CET, Tamir Duberstein wrote:
>> > I tried using the strict provenance lints locally and I think we can't
>> > until we properly bump MSRV due to `clippy::incompatible_msrv`:
>> >
>> > warning: current MSRV (Minimum Supported Rust Version) is `1.78.0` but
>> > this item is stable since `1.84.0`
>> >    --> ../rust/kernel/str.rs:696:22
>> >     |
>> > 696 |             pos: pos.expose_provenance(),
>> >     |                      ^^^^^^^^^^^^^^^^^^^
>> >     |
>> >     = help: for further information visit
>> > https://rust-lang.github.io/rust-clippy/master/index.html#incompatible_msrv
>>
>> Oh this is annoying...
>>
>> > This is with `#![feature(strict_provenance)]`. I can file the issue
>> > but I think it's blocked on MSRV >= 1.84.0. But maybe you know of a
>> > path forward :)
>>
>> I think we should be able to just `allow(clippy::incompatible_msrv)`,
>> since Miguel & other maintainers will test with 1.78 (or at least are
>> supposed to :).
>
> Alright, you've sniped me.

Sorry about that :)

> This is coming in v3.

Thanks a lot!

---
Cheers,
Benno