diff options
Diffstat (limited to 'library')
| -rw-r--r-- | library/core/src/ptr/metadata.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/library/core/src/ptr/metadata.rs b/library/core/src/ptr/metadata.rs index 0deac3621e8..dc3ec3fd199 100644 --- a/library/core/src/ptr/metadata.rs +++ b/library/core/src/ptr/metadata.rs @@ -106,6 +106,9 @@ pub const fn metadata<T: PointeeSized>(ptr: *const T) -> <T as Pointee>::Metadat /// For slices, see the documentation of [`slice::from_raw_parts`] for safety requirements. /// For trait objects, the metadata must come from a pointer to the same underlying erased type. /// +/// If you are attempting to deconstruct a DST in a generic context to be reconstructed later, +/// a thin pointer can always be obtained by casting `*const T` to `*const ()`. +/// /// [`slice::from_raw_parts`]: crate::slice::from_raw_parts #[unstable(feature = "ptr_metadata", issue = "81513")] #[inline] |