diff options
| author | Wedson Almeida Filho <wedsonaf@gmail.com> | 2022-12-28 06:03:42 +0000 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2023-01-16 22:20:24 +0100 |
| commit | f75cb6fce4c91847d3b7cf2c5fc7c8eb4bc2d8f0 (patch) | |
| tree | a10985c0522079bea9c407d05b00b4a2de3c3a15 /rust/kernel/lib.rs | |
| parent | 53528772fb5a174c8606cdf0047ac4899ce05be7 (diff) | |
rust: sync: allow coercion from `Arc<T>` to `Arc<U>`
The coercion is only allowed if `U` is a compatible dynamically-sized
type (DST). For example, if we have some type `X` that implements trait
`Y`, then this allows `Arc<X>` to be coerced into `Arc<dyn Y>`.
Suggested-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust/kernel/lib.rs')
| -rw-r--r-- | rust/kernel/lib.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs index 1a10f7c0ddd9..4bde65e7b06b 100644 --- a/rust/kernel/lib.rs +++ b/rust/kernel/lib.rs @@ -13,8 +13,10 @@ #![no_std] #![feature(allocator_api)] +#![feature(coerce_unsized)] #![feature(core_ffi_c)] #![feature(receiver_trait)] +#![feature(unsize)] // Ensure conditional compilation based on the kernel configuration works; // otherwise we may silently break things like initcall handling. |