[]Trait rustc_data_structures::owning_ref::CloneStableAddress

pub unsafe trait CloneStableAddress: StableDeref + Clone { }
⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

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

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

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Implementors

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

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

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