Re: [PATCH v2] rust: bindings: allow any number of params

[Paolo Bonzini <pbonzini@redhat.com>]

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Il mar 15 lug 2025, 08:20 Michael S. Tsirkin <mst@redhat.com> ha scritto:

> We are going to be adding more parameters, and this makes
> rust unhappy:
>     Functions with lots of parameters are considered bad style and reduce
>     readability (“what does the 5th parameter mean?”). Consider grouping
>     some parameters into a new type.
>
> Specifically:
>
> error: this function has too many arguments (8/7)
>     -->
> /builds/mstredhat/qemu/build/rust/qemu-api/rust-qemu-api-tests.p/structured/bindings.inc.rs:3840
> :5
>

Acked-by: Paolo Bonzini <pbonzini@redhat.com>


     |
> 3840 | /     pub fn new_bitfield_1(
> 3841 | |         secure: std::os::raw::c_uint,
> 3842 | |         space: std::os::raw::c_uint,
> 3843 | |         user: std::os::raw::c_uint,
> ...    |
> 3848 | |         address_type: std::os::raw::c_uint,
> 3849 | |     ) -> __BindgenBitfieldUnit<[u8; 4usize]> {
>      | |____________________________________________^
>      |
>      = help: for further information visit
> https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments
>      = note: `-D clippy::too-many-arguments` implied by `-D warnings`
>      = help: to override `-D warnings` add
> `#[allow(clippy::too_many_arguments)]`
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
>  rust/qemu-api/src/bindings.rs | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/rust/qemu-api/src/bindings.rs b/rust/qemu-api/src/bindings.rs
> index 057de4b646..c4f1f755ce 100644
> --- a/rust/qemu-api/src/bindings.rs
> +++ b/rust/qemu-api/src/bindings.rs
> @@ -13,7 +13,8 @@
>      clippy::missing_const_for_fn,
>      clippy::ptr_offset_with_cast,
>      clippy::useless_transmute,
> -    clippy::missing_safety_doc
> +    clippy::missing_safety_doc,
> +    clippy::too_many_arguments
>  )]
>
>  //! `bindgen`-generated declarations.
> --
> MST
>
>
>

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