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In type-coercions.md
, the following is really not clear:
* TyCtor(`T`) to TyCtor(`U`), where TyCtor(`T`) is one of
- `&T`
- `&mut T`
- `*const T`
- `*mut T`
- `Box<T>`
and where `U` can be obtained from `T` by [unsized coercion](#unsized-coercions).
<!--In the future, coerce_inner will be recursively extended to tuples and
structs. In addition, coercions from subtraits to supertraits will be
added. See [RFC 401] for more details.-->
Ideally, the text should not require deciphering. It seems to be redundantly stating that &T
can be coerced to &U
. However, is it merely stating that &
, &mut
, *const
, *mut
, and Box
have special permissibility when unsized coercions exists for their argument types.
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