Re: [PATCH] rust: bitmap: clean Rust 1.92.0 `unused_unsafe` warning

[Alice Ryhl]

On Tue, Oct 14, 2025 at 12:09:09PM -0400, Yury Norov wrote:
> On Mon, Oct 13, 2025 at 09:20:15AM +0000, Alice Ryhl wrote:
> > On Mon, Oct 13, 2025 at 02:14:22AM +0200, Miguel Ojeda wrote:
> > > Starting with Rust 1.92.0 (expected 2025-12-11), Rust allows to safely
> > > take the address of a union field [1][2]:
> > > 
> > >       CLIPPY L rust/kernel.o
> > >     error: unnecessary `unsafe` block
> > >        --> rust/kernel/bitmap.rs:169:13
> > >         |
> > >     169 |             unsafe { core::ptr::addr_of!(self.repr.bitmap) }
> > >         |             ^^^^^^ unnecessary `unsafe` block
> > >         |
> > >         = note: `-D unused-unsafe` implied by `-D warnings`
> > >         = help: to override `-D warnings` add `#[allow(unused_unsafe)]`
> > > 
> > >     error: unnecessary `unsafe` block
> > >        --> rust/kernel/bitmap.rs:185:13
> > >         |
> > >     185 |             unsafe { core::ptr::addr_of_mut!(self.repr.bitmap) }
> > >         |             ^^^^^^ unnecessary `unsafe` block
> > > 
> > > Thus allow both instances to clean the warning in newer compilers.
> > > 
> > > Link: https://github.com/rust-lang/rust/issues/141264 [1]
> > > Link: https://github.com/rust-lang/rust/pull/141469 [2]
> > > Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
> > 
> > Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
> 
> Added in bitmap-for-next.

Is there any possibility of landing this for an -rc of 6.18 instead of
for 6.19-rc1? That way, the warning won't be present when compiling 6.18
with rustc 1.92.0 and newer.

Alice