1 files changed, 6 insertions, 8 deletions

diff --git a/src/txmempool.h b/src/txmempool.h
index d272114a7c..65586a6e6e 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -45,7 +45,7 @@ struct LockPoints
     // values are still valid even after a reorg.
     CBlockIndex* maxInputBlock;
 
-    LockPoints() : height(0), time(0), maxInputBlock(NULL) { }
+    LockPoints() : height(0), time(0), maxInputBlock(nullptr) { }
 };
 
 class CTxMemPool;
@@ -95,8 +95,6 @@ public:
                     bool spendsCoinbase,
                     int64_t nSigOpsCost, LockPoints lp);
 
-    CTxMemPoolEntry(const CTxMemPoolEntry& other);
-
     const CTransaction& GetTx() const { return *this->tx; }
     CTransactionRef GetSharedTx() const { return this->tx; }
     const CAmount& GetFee() const { return nFee; }
@@ -167,7 +165,7 @@ struct update_ancestor_state
 
 struct update_fee_delta
 {
-    update_fee_delta(int64_t _feeDelta) : feeDelta(_feeDelta) { }
+    explicit update_fee_delta(int64_t _feeDelta) : feeDelta(_feeDelta) { }
 
     void operator() (CTxMemPoolEntry &e) { e.UpdateFeeDelta(feeDelta); }
 
@@ -177,7 +175,7 @@ private:
 
 struct update_lock_points
 {
-    update_lock_points(const LockPoints& _lp) : lp(_lp) { }
+    explicit update_lock_points(const LockPoints& _lp) : lp(_lp) { }
 
     void operator() (CTxMemPoolEntry &e) { e.UpdateLockPoints(lp); }
 
@@ -501,7 +499,7 @@ public:
 
     /** Create a new CTxMemPool.
      */
-    CTxMemPool(CBlockPolicyEstimator* estimator = nullptr);
+    explicit CTxMemPool(CBlockPolicyEstimator* estimator = nullptr);
 
     /**
      * If sanity-checking is turned on, check makes sure the pool is
@@ -592,7 +590,7 @@ public:
       *  pvNoSpendsRemaining, if set, will be populated with the list of outpoints
       *  which are not in mempool which no longer have any spends in this mempool.
       */
-    void TrimToSize(size_t sizelimit, std::vector<COutPoint>* pvNoSpendsRemaining=NULL);
+    void TrimToSize(size_t sizelimit, std::vector<COutPoint>* pvNoSpendsRemaining=nullptr);
 
     /** Expire all transaction (and their dependencies) in the mempool older than time. Return the number of removed transactions. */
     int Expire(int64_t time);
@@ -606,7 +604,7 @@ public:
         return mapTx.size();
     }
 
-    uint64_t GetTotalTxSize()
+    uint64_t GetTotalTxSize() const
     {
         LOCK(cs);
         return totalTxSize;