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09808839c7
`feature(raw_ref_op)` became stable in Rust 1.82.0 which is the current
MSRV of pin-init with no default features. Earlier Rust versions will
now need to enable `raw_ref_op` to continue to work with pin-init.
This reduces visual complexity and improves consistency with existing
reference syntax.
Suggested-by: Benno Lossin <lossin@kernel.org>
Link: https://github.com/Rust-for-Linux/linux/issues/1148
Closes: https://github.com/Rust-for-Linux/pin-init/issues/99
Signed-off-by: Antonio Hickey <contact@antoniohickey.com>
Link: e27763004e
[ Reworded commit message. - Benno ]
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260319093542.3756606-6-lossin@kernel.org
Signed-off-by: Benno Lossin <lossin@kernel.org>
47 lines
1.0 KiB
Rust
47 lines
1.0 KiB
Rust
// SPDX-License-Identifier: Apache-2.0 OR MIT
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#![cfg_attr(USE_RUSTC_FEATURES, feature(lint_reasons))]
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#![cfg_attr(USE_RUSTC_FEATURES, feature(raw_ref_op))]
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use pin_init::*;
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// Struct with size over 1GiB
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#[derive(Debug)]
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#[allow(dead_code)]
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pub struct BigStruct {
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buf: [u8; 1024 * 1024 * 1024],
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a: u64,
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b: u64,
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c: u64,
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d: u64,
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managed_buf: ManagedBuf,
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}
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#[derive(Debug)]
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pub struct ManagedBuf {
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buf: [u8; 1024 * 1024],
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}
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impl ManagedBuf {
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pub fn new() -> impl Init<Self> {
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init!(ManagedBuf { buf <- init_zeroed() })
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}
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}
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fn main() {
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#[cfg(any(feature = "std", feature = "alloc"))]
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{
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// we want to initialize the struct in-place, otherwise we would get a stackoverflow
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let buf: Box<BigStruct> = Box::init(init!(BigStruct {
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buf <- init_zeroed(),
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a: 7,
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b: 186,
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c: 7789,
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d: 34,
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managed_buf <- ManagedBuf::new(),
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}))
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.unwrap();
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println!("{}", core::mem::size_of_val(&*buf));
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}
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}
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