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stabilize {Rc, Arc}::is_unique #163458

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stabilize {Rc, Arc}::is_unique #163458

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6 changes: 1 addition & 5 deletions library/alloc/src/rcs/arc.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2870,8 +2870,6 @@ impl<T: ?Sized, A: Allocator> Arc<T, A> {
/// # Examples
///
/// ```
/// #![feature(arc_is_unique)]
///
/// use std::sync::Arc;
///
/// let x = Arc::new(3);
Expand All @@ -2894,8 +2892,6 @@ impl<T: ?Sized, A: Allocator> Arc<T, A> {
/// following code is valid, even though it would be UB if it used `Arc::get_mut`:
///
/// ```
/// #![feature(arc_is_unique)]
///
/// use std::sync::Arc;
///
/// let arc = Arc::new(5);
Expand All @@ -2915,7 +2911,7 @@ impl<T: ?Sized, A: Allocator> Arc<T, A> {
///
/// [`get_mut_unchecked`]: Self::get_mut_unchecked
#[inline]
#[unstable(feature = "arc_is_unique", issue = "138938")]
#[stable(feature = "arc_is_unique", since = "CURRENT_RUSTC_VERSION")]
pub fn is_unique(this: &Self) -> bool {
// lock the weak pointer count if we appear to be the sole weak pointer
// holder.
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6 changes: 1 addition & 5 deletions library/alloc/src/rcs/rc.rs
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Expand Up @@ -1996,8 +1996,6 @@ impl<T: ?Sized, A: Allocator> Rc<T, A> {
/// # Examples
///
/// ```
/// #![feature(arc_is_unique)]
///
/// use std::rc::Rc;
///
/// let x = Rc::new(3);
Expand All @@ -2020,8 +2018,6 @@ impl<T: ?Sized, A: Allocator> Rc<T, A> {
/// following code is valid, even though it would be UB if it used `Rc::get_mut`:
///
/// ```
/// #![feature(arc_is_unique)]
///
/// use std::rc::Rc;
///
/// let rc = Rc::new(5);
Expand All @@ -2032,7 +2028,7 @@ impl<T: ?Sized, A: Allocator> Rc<T, A> {
///
/// [`get_mut_unchecked`]: Self::get_mut_unchecked
#[inline]
#[unstable(feature = "arc_is_unique", issue = "138938")]
#[stable(feature = "arc_is_unique", since = "CURRENT_RUSTC_VERSION")]
pub fn is_unique(this: &Self) -> bool {
Rc::weak_count(this) == 0 && Rc::strong_count(this) == 1
}
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