diff options
Diffstat (limited to 'library/core/src/marker.rs')
| -rw-r--r-- | library/core/src/marker.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/library/core/src/marker.rs b/library/core/src/marker.rs index ae4ebf444..42c342801 100644 --- a/library/core/src/marker.rs +++ b/library/core/src/marker.rs @@ -96,6 +96,7 @@ unsafe impl<T: Sync + ?Sized> Send for &T {} )] #[fundamental] // for Default, for example, which requires that `[T]: !Default` be evaluatable #[rustc_specialization_trait] +#[cfg_attr(not(bootstrap), rustc_deny_explicit_impl)] pub trait Sized { // Empty. } @@ -127,6 +128,7 @@ pub trait Sized { /// [nomicon-coerce]: ../../nomicon/coercions.html #[unstable(feature = "unsize", issue = "27732")] #[lang = "unsize"] +#[cfg_attr(not(bootstrap), rustc_deny_explicit_impl)] pub trait Unsize<T: ?Sized> { // Empty. } @@ -693,6 +695,7 @@ impl<T: ?Sized> StructuralEq for PhantomData<T> {} reason = "this trait is unlikely to ever be stabilized, use `mem::discriminant` instead" )] #[lang = "discriminant_kind"] +#[cfg_attr(not(bootstrap), rustc_deny_explicit_impl)] pub trait DiscriminantKind { /// The type of the discriminant, which must satisfy the trait /// bounds required by `mem::Discriminant`. @@ -793,6 +796,7 @@ impl<T: ?Sized> Unpin for *mut T {} #[lang = "destruct"] #[rustc_on_unimplemented(message = "can't drop `{Self}`", append_const_msg)] #[const_trait] +#[cfg_attr(not(bootstrap), rustc_deny_explicit_impl)] pub trait Destruct {} /// A marker for tuple types. @@ -802,8 +806,18 @@ pub trait Destruct {} #[unstable(feature = "tuple_trait", issue = "none")] #[lang = "tuple_trait"] #[rustc_on_unimplemented(message = "`{Self}` is not a tuple")] +#[cfg_attr(not(bootstrap), rustc_deny_explicit_impl)] pub trait Tuple {} +/// A marker for things +#[unstable(feature = "pointer_sized_trait", issue = "none")] +#[cfg_attr(not(bootstrap), lang = "pointer_sized")] +#[rustc_on_unimplemented( + message = "`{Self}` needs to be a pointer-sized type", + label = "`{Self}` needs to be a pointer-sized type" +)] +pub trait PointerSized {} + /// Implementations of `Copy` for primitive types. /// /// Implementations that cannot be described in Rust |