From bd129849f0b634bddf64a195097b15d585e8f2bd Mon Sep 17 00:00:00 2001
From: Lee Clagett <code@leeclagett.com>
Date: Thu, 28 Jan 2021 23:42:40 -0500
Subject: Remove copies from foreach loops (thanks to Clang)

---
 src/blockchain_utilities/blockchain_ancestry.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/blockchain_utilities/blockchain_ancestry.cpp')

diff --git a/src/blockchain_utilities/blockchain_ancestry.cpp b/src/blockchain_utilities/blockchain_ancestry.cpp
index 89b932e4f..89c18bbc3 100644
--- a/src/blockchain_utilities/blockchain_ancestry.cpp
+++ b/src/blockchain_utilities/blockchain_ancestry.cpp
@@ -149,7 +149,7 @@ struct ancestry_state_t
     {
       std::unordered_map<crypto::hash, cryptonote::transaction> old_tx_cache;
       a & old_tx_cache;
-      for (const auto i: old_tx_cache)
+      for (const auto& i: old_tx_cache)
         tx_cache.insert(std::make_pair(i.first, ::tx_data_t(i.second)));
     }
     else
@@ -161,7 +161,7 @@ struct ancestry_state_t
       std::unordered_map<uint64_t, cryptonote::block> old_block_cache;
       a & old_block_cache;
       block_cache.resize(old_block_cache.size());
-      for (const auto i: old_block_cache)
+      for (const auto& i: old_block_cache)
         block_cache[i.first] = i.second;
     }
     else
-- 
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