Fix the bounds on K for the Send impl of IterMut

rust-lang · May 30, 2019 · a4eba4f · a4eba4f
1 parent 1889600
commit a4eba4f
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/map.rs b/src/map.rs
@@ -1119,6 +1119,11 @@ pub struct IterMut<'a, K, V> {
     marker: PhantomData<(&'a K, &'a mut V)>,
 }
 
+// We override the default Send impl which has K: Sync instead of K: Send. Both
+// are correct, but this one is more general since it allows keys which
+// implement Send but not Sync.
+unsafe impl<K: Send, V: Send> Send for IterMut<'_, K, V> {}
+
 impl<K, V> IterMut<'_, K, V> {
     /// Returns a iterator of references over the remaining items.
     #[inline]