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CoerceUnsized for PinBox

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boats
2018-03-15 16:10:18 -07:00
parent e3c5f6958f
commit 2f1c24a60d
1 changed files with 3 additions and 0 deletions
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3
src/liballoc/boxed.rs
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@@ -989,3 +989,6 @@ impl<T: ?Sized> fmt::Pointer for PinBox<T> {
fmt::Pointer::fmt(&ptr, f) fmt::Pointer::fmt(&ptr, f)
} }
} }
#[unstable(feature = "pin", issue = "0")]
impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<PinBox<U>> for PinBox<T> {}