Benno Lossin 22eed6068d rust: macros: allow generic parameter default values in #[pin_data] ... Add support for generic parameters defaults in `#[pin_data]` by using the newly introduced `decl_generics` instead of the `impl_generics`. Before this would not compile: #[pin_data] struct Foo<const N: usize = 0> { // ... } because it would be expanded to this: struct Foo<const N: usize = 0> { // ... } const _: () = { struct __ThePinData<const N: usize = 0> { __phantom: ::core::marker::PhantomData<fn(Foo<N>) -> Foo<N>>, } impl<const N: usize = 0> ::core::clone::Clone for __ThePinData<N> { fn clone(&self) -> Self { *self } } // [...] rest of expansion omitted }; The problem is with the `impl<const N: usize = 0>`, since that is invalid Rust syntax. It should not mention the default value at all, since default values only make sense on type definitions. The new `impl_generics` do not contain the default values, thus generating correct Rust code. This is used by the next commit that puts `#[pin_data]` on `kernel::workqueue::Work`. Signed-off-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Tested-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20240309155243.482334-2-benno.lossin@proton.me Signed-off-by: Miguel Ojeda <ojeda@kernel.org>		2024-04-07 22:03:42 +02:00
..
concat_idents.rs	rust: macros: add concat_idents! proc macro	2022-12-04 01:59:04 +01:00
helpers.rs	rust: macros: allow generic parameter default values in #[pin_data]	2024-04-07 22:03:42 +02:00
lib.rs	rust: support srctree-relative links	2023-12-21 20:54:17 +01:00
module.rs	rust: module: place generated init_module() function in .init.text	2024-02-25 19:17:31 +01:00
paste.rs	rust: macros: update 'paste!' macro to accept string literals	2023-12-14 20:14:01 +01:00
pin_data.rs	rust: macros: allow generic parameter default values in #[pin_data]	2024-04-07 22:03:42 +02:00
pinned_drop.rs	rust: init: add PinnedDrop trait and macros	2023-04-12 18:41:05 +02:00
quote.rs	rust: add derive macro for Zeroable	2023-08-21 14:31:48 +02:00
vtable.rs	rust: macros: vtable: fix HAS_* redefinition (gen_const_name)	2023-08-09 21:15:07 +02:00
zeroable.rs	rust: macros: add decl_generics to parse_generics()	2024-04-07 22:03:42 +02:00