From ca1defc40bdd09850a37acfa828628bdbda719cb Mon Sep 17 00:00:00 2001
From: Zachary S <zasample18+github@gmail.com>
Date: Sat, 14 Feb 2026 22:10:01 -0600
Subject: [PATCH] Update UnsafeUnpin impls for extern types

Also updates the marker_impls macro docs to use PointeeSized bound, as most uses of the macro now do.
---
 library/core/src/marker.rs | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/library/core/src/marker.rs b/library/core/src/marker.rs
index 7187c71799b9..818dad6bce2f 100644
--- a/library/core/src/marker.rs
+++ b/library/core/src/marker.rs
@@ -46,8 +46,8 @@
 /// marker_impls! {
 ///     MarkerTrait for
 ///         u8, i8,
-///         {T: ?Sized} *const T,
-///         {T: ?Sized} *mut T,
+///         {T: PointeeSized} *const T,
+///         {T: PointeeSized} *mut T,
 ///         {T: MarkerTrait} PhantomData<T>,
 ///         u32,
 /// }
@@ -931,15 +931,15 @@ impl<T: PointeeSized> !Freeze for UnsafeCell<T> {}
 pub unsafe auto trait UnsafeUnpin {}
 
 #[unstable(feature = "unsafe_unpin", issue = "125735")]
-impl<T: ?Sized> !UnsafeUnpin for UnsafePinned<T> {}
+impl<T: PointeeSized> !UnsafeUnpin for UnsafePinned<T> {}
 marker_impls! {
 #[unstable(feature = "unsafe_unpin", issue = "125735")]
     unsafe UnsafeUnpin for
-        {T: ?Sized} PhantomData<T>,
-        {T: ?Sized} *const T,
-        {T: ?Sized} *mut T,
-        {T: ?Sized} &T,
-        {T: ?Sized} &mut T,
+        {T: PointeeSized} PhantomData<T>,
+        {T: PointeeSized} *const T,
+        {T: PointeeSized} *mut T,
+        {T: PointeeSized} &T,
+        {T: PointeeSized} &mut T,
 }
 
 /// Types that do not require any pinning guarantees.