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-rw-r--r--src/rpc/blockchain.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index b8ef758661..56018caf24 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -486,7 +486,10 @@ UniValue MempoolToJSON(const CTxMemPool& pool, bool verbose)
const uint256& hash = e.GetTx().GetHash();
UniValue info(UniValue::VOBJ);
entryToJSON(pool, info, e);
- o.pushKV(hash.ToString(), info);
+ // Mempool has unique entries so there is no advantage in using
+ // UniValue::pushKV, which checks if the key already exists in O(N).
+ // UniValue::__pushKV is used instead which currently is O(1).
+ o.__pushKV(hash.ToString(), info);
}
return o;
} else {