diff options
Diffstat (limited to 'src/libcore')
| -rw-r--r-- | src/libcore/iter/traits/marker.rs | 2 | ||||
| -rw-r--r-- | src/libcore/marker.rs | 7 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/libcore/iter/traits/marker.rs b/src/libcore/iter/traits/marker.rs index 404cc84495c..a9ba3908c38 100644 --- a/src/libcore/iter/traits/marker.rs +++ b/src/libcore/iter/traits/marker.rs @@ -13,6 +13,7 @@ /// [`Iterator::fuse`]: ../../std/iter/trait.Iterator.html#method.fuse /// [`Fuse`]: ../../std/iter/struct.Fuse.html #[stable(feature = "fused", since = "1.26.0")] +#[rustc_unsafe_specialization_marker] pub trait FusedIterator: Iterator {} #[stable(feature = "fused", since = "1.26.0")] @@ -38,6 +39,7 @@ impl<I: FusedIterator + ?Sized> FusedIterator for &mut I {} /// [`usize::MAX`]: ../../std/usize/constant.MAX.html /// [`.size_hint`]: ../../std/iter/trait.Iterator.html#method.size_hint #[unstable(feature = "trusted_len", issue = "37572")] +#[rustc_unsafe_specialization_marker] pub unsafe trait TrustedLen: Iterator {} #[unstable(feature = "trusted_len", issue = "37572")] diff --git a/src/libcore/marker.rs b/src/libcore/marker.rs index 09a8b417e6e..339b07119c6 100644 --- a/src/libcore/marker.rs +++ b/src/libcore/marker.rs @@ -363,6 +363,13 @@ pub trait StructuralEq { /// [impls]: #implementors #[stable(feature = "rust1", since = "1.0.0")] #[lang = "copy"] +// FIXME(matthewjasper) This allows copying a type that doesn't implement +// `Copy` because of unsatisfied lifetime bounds (copying `A<'_>` when only +// `A<'static>: Copy` and `A<'_>: Clone`). +// We have this attribute here for now only because there are quite a few +// existing specializations on `Copy` that already exist in the standard +// library, and there's no way to safely have this behavior right now. +#[rustc_unsafe_specialization_marker] pub trait Copy: Clone { // Empty. } |