Trait std::pin::PinCoerceUnsized
source ยท pub unsafe trait PinCoerceUnsized { }
๐ฌThis is a nightly-only experimental API. (
pin_coerce_unsized_trait
#123430)Expand description
Trait that indicates that this is a pointer or a wrapper for one, where unsizing can be performed on the pointee when it is pinned.
ยงSafety
If this type implements Deref
, then the concrete type returned by deref
and deref_mut
must not change without a modification. The following
operations are not considered modifications:
- Moving the pointer.
- Performing unsizing coercions on the pointer.
- Performing dynamic dispatch with the pointer.
- Calling
deref
orderef_mut
on the pointer.
The concrete type of a trait object is the type that the vtable corresponds to. The concrete type of a slice is an array of the same element type and the length specified in the metadata. The concrete type of a sized type is the type itself.