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Date: Sat, 10 Jan 2026 17:21:32 +0100
Message-Id: <DFL1PC40HZIU.3V030UQ1DWXFG@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <rust-for-linux@vger.kernel.org>
Subject: Re: [PATCH 08/12] rust: pin-init: rewrite the initializer macros
 using `syn`
From: "Benno Lossin" <lossin@kernel.org>
To: "Gary Guo" <gary@garyguo.net>, "Miguel Ojeda" <ojeda@kernel.org>, "Boqun
 Feng" <boqun.feng@gmail.com>, =?utf-8?q?Bj=C3=B6rn_Roy_Baron?=
 <bjorn3_gh@protonmail.com>, "Andreas Hindborg" <a.hindborg@kernel.org>,
 "Alice Ryhl" <aliceryhl@google.com>, "Trevor Gross" <tmgross@umich.edu>,
 "Danilo Krummrich" <dakr@kernel.org>, "Fiona Behrens" <me@kloenk.dev>,
 "Christian Schrefl" <chrisi.schrefl@gmail.com>, "Alban Kurti"
 <kurti@invicto.ai>
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References: <20260108135127.3153925-1-lossin@kernel.org>
 <20260108135127.3153925-9-lossin@kernel.org>
 <DFK3R2EK1JGL.FFW73JGUSGP5@garyguo.net>
 <DFK8F3L2BMS2.3G1BAQSU145IH@kernel.org>
In-Reply-To: <DFK8F3L2BMS2.3G1BAQSU145IH@kernel.org>

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 =3D ::core::mem::zeroed();
>>> +                ::core::ptr::write(slot, #path {
>>> +                    #(
>>> +                        #fields: ::core::panic!(),
>>> +                    )*
>>> +                    ..zeroed
>>
>> Would just ::core::mem::zeroed() here work or does it have same inferenc=
e 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