linux-kernel - Re: [PATCH 3/4] rust: macros: replace Self with the concrete type in #[pin

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Message-ID: <9ee86168-f470-23fe-5e1e-47b984ca069e@ryhl.io>
Date:   Wed, 17 May 2023 22:46:39 +0200
From:   Alice Ryhl <alice@...l.io>
To:     Benno Lossin <benno.lossin@...ton.me>
Cc:     rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev, Alice Ryhl <aliceryhl@...gle.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>
Subject: Re: [PATCH 3/4] rust: macros: replace Self with the concrete type in
 #[pin_data]

On 4/24/23 10:11, Benno Lossin wrote:
> When using `#[pin_data]` on a struct that used `Self` in the field
> types, a type error would be emitted when trying to use `pin_init!`.
> Since an internal type would be referenced by `Self` instead of the
> defined struct.
> This patch fixes this issue by replacing all occurrences of `Self` in
> the `#[pin_data]` macro with the concrete type circumventing the issue.
> Since rust allows type definitions inside of blocks, which are
> expressions, the macro also checks for these and emits a compile error
> when it finds `trait`, `enum`, `union`, `struct` or `impl`. These
> keywords allow creating new `Self` contexts, which conflicts with the
> current implementation of replacing every `Self` ident. If these were
> allowed, some `Self` idents would be replaced incorrectly.
> 
> Signed-off-by: Benno Lossin <benno.lossin@...ton.me>
> Reported-by: Alice Ryhl <aliceryhl@...gle.com>

It seems like you're missing a newline in the commit message?

Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>