linux-kernel - Re: [PATCH 08/12] rust: pin-init: rewrite the initializer macros using `syn`

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Message-Id: <DFL1PC40HZIU.3V030UQ1DWXFG@kernel.org>
Date: Sat, 10 Jan 2026 17:21:32 +0100
From: "Benno Lossin" <lossin@...nel.org>
To: "Gary Guo" <gary@...yguo.net>, "Miguel Ojeda" <ojeda@...nel.org>, "Boqun
 Feng" <boqun.feng@...il.com>, Björn Roy Baron
 <bjorn3_gh@...tonmail.com>, "Andreas Hindborg" <a.hindborg@...nel.org>,
 "Alice Ryhl" <aliceryhl@...gle.com>, "Trevor Gross" <tmgross@...ch.edu>,
 "Danilo Krummrich" <dakr@...nel.org>, "Fiona Behrens" <me@...enk.dev>,
 "Christian Schrefl" <chrisi.schrefl@...il.com>, "Alban Kurti"
 <kurti@...icto.ai>
Cc: <linux-kernel@...r.kernel.org>, <rust-for-linux@...r.kernel.org>
Subject: Re: [PATCH 08/12] rust: pin-init: rewrite the initializer macros
 using `syn`

On Fri Jan 9, 2026 at 6:24 PM CET, Benno Lossin wrote:
> On Fri Jan 9, 2026 at 2:45 PM CET, Gary Guo wrote:
>> On Thu Jan 8, 2026 at 1:50 PM GMT, Benno Lossin wrote:
>>> +                zeroed = ::core::mem::zeroed();
>>> +                ::core::ptr::write(slot, #path {
>>> +                    #(
>>> +                        #fields: ::core::panic!(),
>>> +                    )*
>>> +                    ..zeroed
>>
>> Would just ::core::mem::zeroed() here work or does it have same inference issue?
>> IIUC the type inference should work here as ..Default::default() works.
>
> I haven't checked this, will do so.

I checked it (also in the kernel) and it does seem to work, so I'll
change it to your suggestion.

Cheers,
Benno