Fix Sync and Send markers, add Unpin (#39)

* Fix Sync and Send markers, add Unpin * rustfmt
maciejhirsz · Jan 26, 2021 · 175938a · 175938a
1 parent 8e970aa
commit 175938a
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diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "beef"
-version = "0.4.4"
+version = "0.5.0"
 authors = ["Maciej Hirsz <hello@maciej.codes>"]
 edition = "2018"
 description = "More compact Cow"

diff --git a/src/generic.rs b/src/generic.rs
@@ -528,5 +528,26 @@ where
 }
 
 // Safety: Same bounds as `std::borrow::Cow`.
-unsafe impl<T: Beef + Sync + ?Sized, U: Capacity> Sync for Cow<'_, T, U> {}
-unsafe impl<T: Beef + Send + Sync + ?Sized, U: Capacity> Send for Cow<'_, T, U> {}
+unsafe impl<T, U> Sync for Cow<'_, T, U>
+where
+    U: Capacity,
+    T: Beef + Sync + ?Sized,
+    T::Owned: Sync,
+{
+}
+
+unsafe impl<T, U> Send for Cow<'_, T, U>
+where
+    U: Capacity,
+    T: Beef + Sync + ?Sized,
+    T::Owned: Send,
+{
+}
+
+impl<T, U> Unpin for Cow<'_, T, U>
+where
+    U: Capacity,
+    T: Beef + ?Sized,
+    T::Owned: Unpin,
+{
+}