diff options
Diffstat (limited to 'library/alloc/src/rc.rs')
| -rw-r--r-- | library/alloc/src/rc.rs | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs index 5018ff4ad71..529b583cdd2 100644 --- a/library/alloc/src/rc.rs +++ b/library/alloc/src/rc.rs @@ -2357,7 +2357,7 @@ impl<T: Default> Default for Rc<T> { /// assert_eq!(*x, 0); /// ``` #[inline] - fn default() -> Rc<T> { + fn default() -> Self { unsafe { Self::from_inner( Box::leak(Box::write( @@ -2373,7 +2373,7 @@ impl<T: Default> Default for Rc<T> { #[cfg(not(no_global_oom_handling))] #[stable(feature = "more_rc_default_impls", since = "1.80.0")] impl Default for Rc<str> { - /// Creates an empty str inside an Rc + /// Creates an empty `str` inside an `Rc`. /// /// This may or may not share an allocation with other Rcs on the same thread. #[inline] @@ -2387,7 +2387,7 @@ impl Default for Rc<str> { #[cfg(not(no_global_oom_handling))] #[stable(feature = "more_rc_default_impls", since = "1.80.0")] impl<T> Default for Rc<[T]> { - /// Creates an empty `[T]` inside an Rc + /// Creates an empty `[T]` inside an `Rc`. /// /// This may or may not share an allocation with other Rcs on the same thread. #[inline] @@ -2397,6 +2397,19 @@ impl<T> Default for Rc<[T]> { } } +#[cfg(not(no_global_oom_handling))] +#[stable(feature = "pin_default_impls", since = "CURRENT_RUSTC_VERSION")] +impl<T> Default for Pin<Rc<T>> +where + T: ?Sized, + Rc<T>: Default, +{ + #[inline] + fn default() -> Self { + unsafe { Pin::new_unchecked(Rc::<T>::default()) } + } +} + #[stable(feature = "rust1", since = "1.0.0")] trait RcEqIdent<T: ?Sized + PartialEq, A: Allocator> { fn eq(&self, other: &Rc<T, A>) -> bool; |