Trait rustc_ap_rustc_data_structures::owning_ref::CloneStableAddress

pub unsafe trait CloneStableAddress: StableDeref + Clone { }

An unsafe marker trait for types where clones deref to the same address. This has all the requirements of StableDeref, and additionally requires that after calling clone(), both the old and new value deref to the same address. For example, Rc and Arc implement CloneStableDeref, but Box and Vec do not.

Note that a single type should never implement both DerefMut and CloneStableDeref. If it did, this would let you get two mutable references to the same location, by cloning and then calling deref_mut() on both values.

Implementations on Foreign Types

impl<'a, T> CloneStableDeref for &'a T where
    T: ?Sized, 

impl<T> CloneStableDeref for Arc<T> where
    T: ?Sized, 

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Implementors

impl<O, T: ?Sized> CloneStableDeref for OwningRef<O, T> where
    O: CloneStableAddress, 

impl<T> CloneStableDeref for Rc<T> where
    T: ?Sized, 

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