From f5d0ee0ed7a481d918a6c5bb491ce1fafcb26d5a Mon Sep 17 00:00:00 2001
From: Michael Sproul <michael@sigmaprime.io>
Date: Tue, 5 Nov 2019 18:06:41 +1100
Subject: [PATCH] Fix merkle_proof for eth2_hashing refactor (#593)

---
 eth2/utils/merkle_proof/src/lib.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/eth2/utils/merkle_proof/src/lib.rs b/eth2/utils/merkle_proof/src/lib.rs
index 356c668352..bfc9cc26ec 100644
--- a/eth2/utils/merkle_proof/src/lib.rs
+++ b/eth2/utils/merkle_proof/src/lib.rs
@@ -124,7 +124,10 @@ impl MerkleTree {
                     // All other possibilities are invalid MerkleTrees
                     (_, _) => return Err(MerkleTreeError::Invalid),
                 };
-                *hash = hash_concat(left.hash(), right.hash());
+                hash.assign_from_slice(&hash_concat(
+                    left.hash().as_bytes(),
+                    right.hash().as_bytes(),
+                ));
             }
         }