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stabilize const_cell #137928

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stabilize const_cell #137928

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stabilize const_cell
@RalfJung
RalfJung committed Mar 3, 2025
commit e31bb45e47d78798f6b6d31316f525316bfcaecf
10 changes: 5 additions & 5 deletions library/core/src/cell.rs
View file
Original file line number Diff line number Diff line change
@@ -495,7 +495,7 @@ impl<T> Cell<T> {
/// ```
#[inline]
#[stable(feature = "move_cell", since = "1.17.0")]
#[rustc_const_unstable(feature = "const_cell", issue = "131283")]
#[rustc_const_stable(feature = "const_cell", since = "CURRENT_RUSTC_VERSION")]
#[rustc_confusables("swap")]
pub const fn replace(&self, val: T) -> T {
// SAFETY: This can cause data races if called from a separate thread,
@@ -537,7 +537,7 @@ impl<T: Copy> Cell<T> {
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature = "const_cell", issue = "131283")]
#[rustc_const_stable(feature = "const_cell", since = "CURRENT_RUSTC_VERSION")]
pub const fn get(&self) -> T {
// SAFETY: This can cause data races if called from a separate thread,
// but `Cell` is `!Sync` so this won't happen.
@@ -617,7 +617,7 @@ impl<T: ?Sized> Cell<T> {
/// ```
#[inline]
#[stable(feature = "cell_get_mut", since = "1.11.0")]
#[rustc_const_unstable(feature = "const_cell", issue = "131283")]
#[rustc_const_stable(feature = "const_cell", since = "CURRENT_RUSTC_VERSION")]
pub const fn get_mut(&mut self) -> &mut T {
self.value.get_mut()
}
@@ -637,7 +637,7 @@ impl<T: ?Sized> Cell<T> {
/// ```
#[inline]
#[stable(feature = "as_cell", since = "1.37.0")]
#[rustc_const_unstable(feature = "const_cell", issue = "131283")]
#[rustc_const_stable(feature = "const_cell", since = "CURRENT_RUSTC_VERSION")]
pub const fn from_mut(t: &mut T) -> &Cell<T> {
// SAFETY: `&mut` ensures unique access.
unsafe { &*(t as *mut T as *const Cell<T>) }
@@ -695,7 +695,7 @@ impl<T> Cell<[T]> {
/// assert_eq!(slice_cell.len(), 3);
/// ```
#[stable(feature = "as_cell", since = "1.37.0")]
#[rustc_const_unstable(feature = "const_cell", issue = "131283")]
#[rustc_const_stable(feature = "const_cell", since = "CURRENT_RUSTC_VERSION")]
pub const fn as_slice_of_cells(&self) -> &[Cell<T>] {
// SAFETY: `Cell<T>` has the same memory layout as `T`.
unsafe { &*(self as *const Cell<[T]> as *const [Cell<T>]) }
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