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-rw-r--r--src/libstd/collections/hash/map.rs10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index a51847c92b5..928de29b297 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -2341,6 +2341,11 @@ pub struct OccupiedEntry<'a, K: 'a, V: 'a> {
     elem: FullBucket<K, V, &'a mut RawTable<K, V>>,
 }
 
+#[stable(feature = "rust1", since = "1.0.0")]
+unsafe impl<'a, K: 'a + Send, V: 'a + Send> Send for OccupiedEntry<'a, K, V> {}
+#[stable(feature = "rust1", since = "1.0.0")]
+unsafe impl<'a, K: 'a + Sync, V: 'a + Sync> Sync for OccupiedEntry<'a, K, V> {}
+
 #[stable(feature= "debug_hash_map", since = "1.12.0")]
 impl<K: Debug, V: Debug> Debug for OccupiedEntry<'_, K, V> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
@@ -2362,6 +2367,11 @@ pub struct VacantEntry<'a, K: 'a, V: 'a> {
     elem: VacantEntryState<K, V, &'a mut RawTable<K, V>>,
 }
 
+#[stable(feature = "rust1", since = "1.0.0")]
+unsafe impl<'a, K: 'a + Send, V: 'a + Send> Send for VacantEntry<'a, K, V> {}
+#[stable(feature = "rust1", since = "1.0.0")]
+unsafe impl<'a, K: 'a + Sync, V: 'a + Sync> Sync for VacantEntry<'a, K, V> {}
+
 #[stable(feature= "debug_hash_map", since = "1.12.0")]
 impl<K: Debug, V> Debug for VacantEntry<'_, K, V> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {