linux-kernel - Re: [PATCH v7 20/26] rust: error: check for config `test` in `Error::name`

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Message-ID: <20240928203050.55ffd293.gary@garyguo.net>
Date: Sat, 28 Sep 2024 20:30:50 +0100
From: Gary Guo <gary@...yguo.net>
To: Danilo Krummrich <dakr@...nel.org>
Cc: ojeda@...nel.org, alex.gaynor@...il.com, wedsonaf@...il.com,
 boqun.feng@...il.com, bjorn3_gh@...tonmail.com, benno.lossin@...ton.me,
 a.hindborg@...sung.com, aliceryhl@...gle.com, akpm@...ux-foundation.org,
 daniel.almeida@...labora.com, faith.ekstrand@...labora.com,
 boris.brezillon@...labora.com, lina@...hilina.net, mcanal@...lia.com,
 zhiw@...dia.com, cjia@...dia.com, jhubbard@...dia.com, airlied@...hat.com,
 ajanulgu@...hat.com, lyude@...hat.com, linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v7 20/26] rust: error: check for config `test` in
 `Error::name`

On Thu, 12 Sep 2024 00:52:56 +0200
Danilo Krummrich <dakr@...nel.org> wrote:

> Additional to `testlib` also check for `test` in `Error::name`. This is
> required by a subsequent patch that (indirectly) uses `Error` in test
> cases.
> 
> Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>
> Reviewed-by: Benno Lossin <benno.lossin@...ton.me>
> Signed-off-by: Danilo Krummrich <dakr@...nel.org>

Reviewed-by: Gary Guo <gary@...yguo.net>

> ---
>  rust/kernel/error.rs | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
> index 81b4fc5cf21e..b71fdd0f54c2 100644
> --- a/rust/kernel/error.rs
> +++ b/rust/kernel/error.rs
> @@ -143,7 +143,7 @@ pub(crate) fn to_ptr<T>(self) -> *mut T {
>      }
>  
>      /// Returns a string representing the error, if one exists.
> -    #[cfg(not(testlib))]
> +    #[cfg(not(any(test, testlib)))]
>      pub fn name(&self) -> Option<&'static CStr> {
>          // SAFETY: Just an FFI call, there are no extra safety requirements.
>          let ptr = unsafe { bindings::errname(-self.0) };
> @@ -160,7 +160,7 @@ pub fn name(&self) -> Option<&'static CStr> {
>      /// When `testlib` is configured, this always returns `None` to avoid the dependency on a
>      /// kernel function so that tests that use this (e.g., by calling [`Result::unwrap`]) can still
>      /// run in userspace.
> -    #[cfg(testlib)]
> +    #[cfg(any(test, testlib))]
>      pub fn name(&self) -> Option<&'static CStr> {
>          None
>      }