impl Hasher for {&mut Hasher, Box<Hasher>}

1 files changed, 10 insertions, 0 deletions

diff --git a/src/libcore/tests/hash/mod.rs b/src/libcore/tests/hash/mod.rs
index 53ac17c052f..49e41f02428 100644
--- a/src/libcore/tests/hash/mod.rs
+++ b/src/libcore/tests/hash/mod.rs
@@ -109,3 +109,13 @@ fn test_custom_state() {
 
     assert_eq!(hash(&Custom { hash: 5 }), 5);
 }
+
+#[test]
+fn test_indirect_hasher() {
+    let mut hasher = MyHasher { hash: 0 };
+    {
+        let mut indirect_hasher: &mut Hasher = &mut hasher;
+        5u32.hash(&mut indirect_hasher);
+    }
+    assert_eq!(hasher.hash, 5);
+}