Struct SyncNoinit 

pub struct SyncNoinit<T>(pub UnsafeCell<MaybeUninit<T>>);

A Sync wrapper around UnsafeCell<MaybeUninit<T>> for use with #[link_section = ".uninit"] statics.

Rust 2024 made &mut static_mut a hard error (static_mut_refs lint). UnsafeCell is the correct escape hatch: it opts into interior mutability, so a raw pointer obtained via UnsafeCell::get() is not a reference to a mutable static. The unsafe impl Sync is sound on a single-core target where no thread can race on the cell.

Tuple Fields

0: UnsafeCell<MaybeUninit<T>>

Implementations

impl<T> SyncNoinit<T>

pub const fn uninit() -> Self

pub unsafe fn as_bytes_mut(&self) -> &'static mut [u8]

Return a &'static mut [u8] slice over the inner value.

Safety

The caller must ensure no other live reference to this cell exists.

Trait Implementations

impl<T> Sync for SyncNoinit<T>