CoerceUnsized for PinBox

boats · boats · commit 2f1c24a60d17 · 2018-03-15T16:10:18.000-07:00
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
@@ -989,3 +989,6 @@ impl<T: ?Sized> fmt::Pointer for PinBox<T> {
         fmt::Pointer::fmt(&ptr, f)
     }
 }
+
+#[unstable(feature = "pin", issue = "0")]
+impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<PinBox<U>> for PinBox<T> {}

Original file line number	Diff line number	Diff line change
`@@ -989,3 +989,6 @@ impl<T: ?Sized> fmt::Pointer for PinBox<T> {`
`989`	`989`	`fmt::Pointer::fmt(&ptr, f)`
`990`	`990`	`}`
`991`	`991`	`}`
	`992`	`+`
	`993`	`+#[unstable(feature = "pin", issue = "0")]`
	`994`	`+impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<PinBox<U>> for PinBox<T> {}`