Merge bitcoin#9283: A few more CTransactionRef optimizations

laanwj · laanwj · commit 869781c51cc1 · 2017-01-04T12:23:10.000+01:00
91335ba Remove unused MakeTransactionRef overloads (Pieter Wuille) 6713f0f Make FillBlock consume txn_available to avoid shared_ptr copies (Pieter Wuille) 62607d7 Convert COrphanTx to keep a CTransactionRef (Pieter Wuille) c44e4c4 Make AcceptToMemoryPool take CTransactionRef (Pieter Wuille)
diff --git a/src/bench/mempool_eviction.cpp b/src/bench/mempool_eviction.cpp
@@ -18,7 +18,7 @@ static void AddTx(const CTransaction& tx, const CAmount& nFee, CTxMemPool& pool)
     unsigned int sigOpCost = 4;
     LockPoints lp;
     pool.addUnchecked(tx.GetHash(), CTxMemPoolEntry(
-                                        tx, nFee, nTime, dPriority, nHeight, pool.HasNoInputsOf(tx),
+                                        MakeTransactionRef(tx), nFee, nTime, dPriority, nHeight, pool.HasNoInputsOf(tx),
                                         tx.GetValueOut(), spendsCoinbase, sigOpCost, lp));
 }
 
diff --git a/src/blockencodings.cpp b/src/blockencodings.cpp
@@ -142,8 +142,9 @@ bool PartiallyDownloadedBlock::IsTxAvailable(size_t index) const {
     return txn_available[index] ? true : false;
 }
 
-ReadStatus PartiallyDownloadedBlock::FillBlock(CBlock& block, const std::vector<CTransactionRef>& vtx_missing) const {
+ReadStatus PartiallyDownloadedBlock::FillBlock(CBlock& block, const std::vector<CTransactionRef>& vtx_missing) {
     assert(!header.IsNull());
+    uint256 hash = header.GetHash();
     block = header;
     block.vtx.resize(txn_available.size());
 
@@ -154,8 +155,13 @@ ReadStatus PartiallyDownloadedBlock::FillBlock(CBlock& block, const std::vector<
                 return READ_STATUS_INVALID;
             block.vtx[i] = vtx_missing[tx_missing_offset++];
         } else
-            block.vtx[i] = txn_available[i];
+            block.vtx[i] = std::move(txn_available[i]);
     }
+
+    // Make sure we can't call FillBlock again.
+    header.SetNull();
+    txn_available.clear();
+
     if (vtx_missing.size() != tx_missing_offset)
         return READ_STATUS_INVALID;
 
@@ -170,10 +176,10 @@ ReadStatus PartiallyDownloadedBlock::FillBlock(CBlock& block, const std::vector<
         return READ_STATUS_CHECKBLOCK_FAILED;
     }
 
-    LogPrint("cmpctblock", "Successfully reconstructed block %s with %lu txn prefilled, %lu txn from mempool and %lu txn requested\n", header.GetHash().ToString(), prefilled_count, mempool_count, vtx_missing.size());
+    LogPrint("cmpctblock", "Successfully reconstructed block %s with %lu txn prefilled, %lu txn from mempool and %lu txn requested\n", hash.ToString(), prefilled_count, mempool_count, vtx_missing.size());
     if (vtx_missing.size() < 5) {
         for (const auto& tx : vtx_missing)
-            LogPrint("cmpctblock", "Reconstructed block %s required tx %s\n", header.GetHash().ToString(), tx->GetHash().ToString());
+            LogPrint("cmpctblock", "Reconstructed block %s required tx %s\n", hash.ToString(), tx->GetHash().ToString());
     }
 
     return READ_STATUS_OK;
diff --git a/src/blockencodings.h b/src/blockencodings.h
@@ -202,7 +202,7 @@ class PartiallyDownloadedBlock {
 
     ReadStatus InitData(const CBlockHeaderAndShortTxIDs& cmpctblock);
     bool IsTxAvailable(size_t index) const;
-    ReadStatus FillBlock(CBlock& block, const std::vector<CTransactionRef>& vtx_missing) const;
+    ReadStatus FillBlock(CBlock& block, const std::vector<CTransactionRef>& vtx_missing);
 };
 
 #endif
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
@@ -51,7 +51,7 @@ struct IteratorComparator
 
 struct COrphanTx {
     // When modifying, adapt the copy of this definition in tests/DoS_tests.
-    CTransaction tx;
+    CTransactionRef tx;
     NodeId fromPeer;
     int64_t nTimeExpire;
 };
@@ -586,9 +586,9 @@ void UnregisterNodeSignals(CNodeSignals& nodeSignals)
 // mapOrphanTransactions
 //
 
-bool AddOrphanTx(const CTransaction& tx, NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
+bool AddOrphanTx(const CTransactionRef& tx, NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 {
-    uint256 hash = tx.GetHash();
+    const uint256& hash = tx->GetHash();
     if (mapOrphanTransactions.count(hash))
         return false;
 
@@ -599,7 +599,7 @@ bool AddOrphanTx(const CTransaction& tx, NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(c
     // have been mined or received.
     // 100 orphans, each of which is at most 99,999 bytes big is
     // at most 10 megabytes of orphans and somewhat more byprev index (in the worst case):
-    unsigned int sz = GetTransactionWeight(tx);
+    unsigned int sz = GetTransactionWeight(*tx);
     if (sz >= MAX_STANDARD_TX_WEIGHT)
     {
         LogPrint("mempool", "ignoring large orphan tx (size: %u, hash: %s)\n", sz, hash.ToString());
@@ -608,7 +608,7 @@ bool AddOrphanTx(const CTransaction& tx, NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(c
 
     auto ret = mapOrphanTransactions.emplace(hash, COrphanTx{tx, peer, GetTime() + ORPHAN_TX_EXPIRE_TIME});
     assert(ret.second);
-    BOOST_FOREACH(const CTxIn& txin, tx.vin) {
+    BOOST_FOREACH(const CTxIn& txin, tx->vin) {
         mapOrphanTransactionsByPrev[txin.prevout].insert(ret.first);
     }
 
@@ -622,7 +622,7 @@ int static EraseOrphanTx(uint256 hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
     map<uint256, COrphanTx>::iterator it = mapOrphanTransactions.find(hash);
     if (it == mapOrphanTransactions.end())
         return 0;
-    BOOST_FOREACH(const CTxIn& txin, it->second.tx.vin)
+    BOOST_FOREACH(const CTxIn& txin, it->second.tx->vin)
     {
         auto itPrev = mapOrphanTransactionsByPrev.find(txin.prevout);
         if (itPrev == mapOrphanTransactionsByPrev.end())
@@ -644,7 +644,7 @@ void EraseOrphansFor(NodeId peer)
         map<uint256, COrphanTx>::iterator maybeErase = iter++; // increment to avoid iterator becoming invalid
         if (maybeErase->second.fromPeer == peer)
         {
-            nErased += EraseOrphanTx(maybeErase->second.tx.GetHash());
+            nErased += EraseOrphanTx(maybeErase->second.tx->GetHash());
         }
     }
     if (nErased > 0) LogPrint("mempool", "Erased %d orphan tx from peer %d\n", nErased, peer);
@@ -665,7 +665,7 @@ unsigned int LimitOrphanTxSize(unsigned int nMaxOrphans) EXCLUSIVE_LOCKS_REQUIRE
         {
             map<uint256, COrphanTx>::iterator maybeErase = iter++;
             if (maybeErase->second.nTimeExpire <= nNow) {
-                nErased += EraseOrphanTx(maybeErase->second.tx.GetHash());
+                nErased += EraseOrphanTx(maybeErase->second.tx->GetHash());
             } else {
                 nMinExpTime = std::min(maybeErase->second.nTimeExpire, nMinExpTime);
             }
@@ -736,7 +736,7 @@ void PeerLogicValidation::SyncTransaction(const CTransaction& tx, const CBlockIn
         auto itByPrev = mapOrphanTransactionsByPrev.find(tx.vin[j].prevout);
         if (itByPrev == mapOrphanTransactionsByPrev.end()) continue;
         for (auto mi = itByPrev->second.begin(); mi != itByPrev->second.end(); ++mi) {
-            const CTransaction& orphanTx = (*mi)->second.tx;
+            const CTransaction& orphanTx = *(*mi)->second.tx;
             const uint256& orphanHash = orphanTx.GetHash();
             vOrphanErase.push_back(orphanHash);
         }
@@ -1600,7 +1600,9 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
 
         deque<COutPoint> vWorkQueue;
         vector<uint256> vEraseQueue;
-        CTransaction tx(deserialize, vRecv);
+        CTransactionRef ptx;
+        vRecv >> ptx;
+        const CTransaction& tx = *ptx;
 
         CInv inv(MSG_TX, tx.GetHash());
         pfrom->AddInventoryKnown(inv);
@@ -1613,7 +1615,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
         pfrom->setAskFor.erase(inv.hash);
         mapAlreadyAskedFor.erase(inv.hash);
 
-        if (!AlreadyHave(inv) && AcceptToMemoryPool(mempool, state, tx, true, &fMissingInputs)) {
+        if (!AlreadyHave(inv) && AcceptToMemoryPool(mempool, state, ptx, true, &fMissingInputs)) {
             mempool.check(pcoinsTip);
             RelayTransaction(tx, connman);
             for (unsigned int i = 0; i < tx.vout.size(); i++) {
@@ -1638,7 +1640,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
                      mi != itByPrev->second.end();
                      ++mi)
                 {
-                    const CTransaction& orphanTx = (*mi)->second.tx;
+                    const CTransactionRef& porphanTx = (*mi)->second.tx;
+                    const CTransaction& orphanTx = *porphanTx;
                     const uint256& orphanHash = orphanTx.GetHash();
                     NodeId fromPeer = (*mi)->second.fromPeer;
                     bool fMissingInputs2 = false;
@@ -1650,7 +1653,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
 
                     if (setMisbehaving.count(fromPeer))
                         continue;
-                    if (AcceptToMemoryPool(mempool, stateDummy, orphanTx, true, &fMissingInputs2)) {
+                    if (AcceptToMemoryPool(mempool, stateDummy, porphanTx, true, &fMissingInputs2)) {
                         LogPrint("mempool", "   accepted orphan tx %s\n", orphanHash.ToString());
                         RelayTransaction(orphanTx, connman);
                         for (unsigned int i = 0; i < orphanTx.vout.size(); i++) {
@@ -1703,7 +1706,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
                     pfrom->AddInventoryKnown(_inv);
                     if (!AlreadyHave(_inv)) pfrom->AskFor(_inv);
                 }
-                AddOrphanTx(tx, pfrom->GetId());
+                AddOrphanTx(ptx, pfrom->GetId());
 
                 // DoS prevention: do not allow mapOrphanTransactions to grow unbounded
                 unsigned int nMaxOrphanTx = (unsigned int)std::max((int64_t)0, GetArg("-maxorphantx", DEFAULT_MAX_ORPHAN_TRANSACTIONS));
diff --git a/src/primitives/transaction.h b/src/primitives/transaction.h
@@ -453,8 +453,6 @@ struct CMutableTransaction
 typedef std::shared_ptr<const CTransaction> CTransactionRef;
 static inline CTransactionRef MakeTransactionRef() { return std::make_shared<const CTransaction>(); }
 template <typename Tx> static inline CTransactionRef MakeTransactionRef(Tx&& txIn) { return std::make_shared<const CTransaction>(std::forward<Tx>(txIn)); }
-static inline CTransactionRef MakeTransactionRef(const CTransactionRef& txIn) { return txIn; }
-static inline CTransactionRef MakeTransactionRef(CTransactionRef&& txIn) { return std::move(txIn); }
 
 /** Compute the weight of a transaction, as defined by BIP 141 */
 int64_t GetTransactionWeight(const CTransaction &tx);
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
@@ -883,8 +883,8 @@ UniValue sendrawtransaction(const JSONRPCRequest& request)
     CMutableTransaction mtx;
     if (!DecodeHexTx(mtx, request.params[0].get_str()))
         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
-    CTransaction tx(std::move(mtx));
-    uint256 hashTx = tx.GetHash();
+    CTransactionRef tx(MakeTransactionRef(std::move(mtx)));
+    const uint256& hashTx = tx->GetHash();
 
     bool fLimitFree = false;
     CAmount nMaxRawTxFee = maxTxFee;
@@ -899,7 +899,7 @@ UniValue sendrawtransaction(const JSONRPCRequest& request)
         // push to local node and sync with wallets
         CValidationState state;
         bool fMissingInputs;
-        if (!AcceptToMemoryPool(mempool, state, tx, fLimitFree, &fMissingInputs, false, nMaxRawTxFee)) {
+        if (!AcceptToMemoryPool(mempool, state, std::move(tx), fLimitFree, &fMissingInputs, false, nMaxRawTxFee)) {
             if (state.IsInvalid()) {
                 throw JSONRPCError(RPC_TRANSACTION_REJECTED, strprintf("%i: %s", state.GetRejectCode(), state.GetRejectReason()));
             } else {
diff --git a/src/test/DoS_tests.cpp b/src/test/DoS_tests.cpp
@@ -24,11 +24,11 @@
 #include <boost/test/unit_test.hpp>
 
 // Tests this internal-to-main.cpp method:
-extern bool AddOrphanTx(const CTransaction& tx, NodeId peer);
+extern bool AddOrphanTx(const CTransactionRef& tx, NodeId peer);
 extern void EraseOrphansFor(NodeId peer);
 extern unsigned int LimitOrphanTxSize(unsigned int nMaxOrphans);
 struct COrphanTx {
-    CTransaction tx;
+    CTransactionRef tx;
     NodeId fromPeer;
     int64_t nTimeExpire;
 };
@@ -122,7 +122,7 @@ BOOST_AUTO_TEST_CASE(DoS_bantime)
     BOOST_CHECK(!connman->IsBanned(addr));
 }
 
-CTransaction RandomOrphan()
+CTransactionRef RandomOrphan()
 {
     std::map<uint256, COrphanTx>::iterator it;
     it = mapOrphanTransactions.lower_bound(GetRandHash());
@@ -150,30 +150,30 @@ BOOST_AUTO_TEST_CASE(DoS_mapOrphans)
         tx.vout[0].nValue = 1*CENT;
         tx.vout[0].scriptPubKey = GetScriptForDestination(key.GetPubKey().GetID());
 
-        AddOrphanTx(tx, i);
+        AddOrphanTx(MakeTransactionRef(tx), i);
     }
 
     // ... and 50 that depend on other orphans:
     for (int i = 0; i < 50; i++)
     {
-        CTransaction txPrev = RandomOrphan();
+        CTransactionRef txPrev = RandomOrphan();
 
         CMutableTransaction tx;
         tx.vin.resize(1);
         tx.vin[0].prevout.n = 0;
-        tx.vin[0].prevout.hash = txPrev.GetHash();
+        tx.vin[0].prevout.hash = txPrev->GetHash();
         tx.vout.resize(1);
         tx.vout[0].nValue = 1*CENT;
         tx.vout[0].scriptPubKey = GetScriptForDestination(key.GetPubKey().GetID());
-        SignSignature(keystore, txPrev, tx, 0, SIGHASH_ALL);
+        SignSignature(keystore, *txPrev, tx, 0, SIGHASH_ALL);
 
-        AddOrphanTx(tx, i);
+        AddOrphanTx(MakeTransactionRef(tx), i);
     }
 
     // This really-big orphan should be ignored:
     for (int i = 0; i < 10; i++)
     {
-        CTransaction txPrev = RandomOrphan();
+        CTransactionRef txPrev = RandomOrphan();
 
         CMutableTransaction tx;
         tx.vout.resize(1);
@@ -183,15 +183,15 @@ BOOST_AUTO_TEST_CASE(DoS_mapOrphans)
         for (unsigned int j = 0; j < tx.vin.size(); j++)
         {
             tx.vin[j].prevout.n = j;
-            tx.vin[j].prevout.hash = txPrev.GetHash();
+            tx.vin[j].prevout.hash = txPrev->GetHash();
         }
-        SignSignature(keystore, txPrev, tx, 0, SIGHASH_ALL);
+        SignSignature(keystore, *txPrev, tx, 0, SIGHASH_ALL);
         // Re-use same signature for other inputs
         // (they don't have to be valid for this test)
         for (unsigned int j = 1; j < tx.vin.size(); j++)
             tx.vin[j].scriptSig = tx.vin[0].scriptSig;
 
-        BOOST_CHECK(!AddOrphanTx(tx, i));
+        BOOST_CHECK(!AddOrphanTx(MakeTransactionRef(tx), i));
     }
 
     // Test EraseOrphansFor:
diff --git a/src/test/blockencodings_tests.cpp b/src/test/blockencodings_tests.cpp
@@ -85,17 +85,23 @@ BOOST_AUTO_TEST_CASE(SimpleRoundTripTest)
         BOOST_CHECK_EQUAL(pool.size(), poolSize - 1);
 
         CBlock block2;
-        std::vector<CTransactionRef> vtx_missing;
-        BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == READ_STATUS_INVALID); // No transactions
+        {
+            PartiallyDownloadedBlock tmp = partialBlock;
+            BOOST_CHECK(partialBlock.FillBlock(block2, {}) == READ_STATUS_INVALID); // No transactions
+            partialBlock = tmp;
+        }
 
-        vtx_missing.push_back(block.vtx[2]); // Wrong transaction
-        partialBlock.FillBlock(block2, vtx_missing); // Current implementation doesn't check txn here, but don't require that
+        // Wrong transaction
+        {
+            PartiallyDownloadedBlock tmp = partialBlock;
+            partialBlock.FillBlock(block2, {block.vtx[2]}); // Current implementation doesn't check txn here, but don't require that
+            partialBlock = tmp;
+        }
         bool mutated;
         BOOST_CHECK(block.hashMerkleRoot != BlockMerkleRoot(block2, &mutated));
 
-        vtx_missing[0] = block.vtx[1];
         CBlock block3;
-        BOOST_CHECK(partialBlock.FillBlock(block3, vtx_missing) == READ_STATUS_OK);
+        BOOST_CHECK(partialBlock.FillBlock(block3, {block.vtx[1]}) == READ_STATUS_OK);
         BOOST_CHECK_EQUAL(block.GetHash().ToString(), block3.GetHash().ToString());
         BOOST_CHECK_EQUAL(block.hashMerkleRoot.ToString(), BlockMerkleRoot(block3, &mutated).ToString());
         BOOST_CHECK(!mutated);
@@ -181,17 +187,24 @@ BOOST_AUTO_TEST_CASE(NonCoinbasePreforwardRTTest)
         BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
 
         CBlock block2;
-        std::vector<CTransactionRef> vtx_missing;
-        BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == READ_STATUS_INVALID); // No transactions
+        {
+            PartiallyDownloadedBlock tmp = partialBlock;
+            BOOST_CHECK(partialBlock.FillBlock(block2, {}) == READ_STATUS_INVALID); // No transactions
+            partialBlock = tmp;
+        }
 
-        vtx_missing.push_back(block.vtx[1]); // Wrong transaction
-        partialBlock.FillBlock(block2, vtx_missing); // Current implementation doesn't check txn here, but don't require that
+        // Wrong transaction
+        {
+            PartiallyDownloadedBlock tmp = partialBlock;
+            partialBlock.FillBlock(block2, {block.vtx[1]}); // Current implementation doesn't check txn here, but don't require that
+            partialBlock = tmp;
+        }
         bool mutated;
         BOOST_CHECK(block.hashMerkleRoot != BlockMerkleRoot(block2, &mutated));
 
-        vtx_missing[0] = block.vtx[0];
         CBlock block3;
-        BOOST_CHECK(partialBlock.FillBlock(block3, vtx_missing) == READ_STATUS_OK);
+        PartiallyDownloadedBlock partialBlockCopy = partialBlock;
+        BOOST_CHECK(partialBlock.FillBlock(block3, {block.vtx[0]}) == READ_STATUS_OK);
         BOOST_CHECK_EQUAL(block.GetHash().ToString(), block3.GetHash().ToString());
         BOOST_CHECK_EQUAL(block.hashMerkleRoot.ToString(), BlockMerkleRoot(block3, &mutated).ToString());
         BOOST_CHECK(!mutated);
@@ -200,7 +213,7 @@ BOOST_AUTO_TEST_CASE(NonCoinbasePreforwardRTTest)
         block.vtx.clear();
         block2.vtx.clear();
         block3.vtx.clear();
-        BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
+        BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1); // + 1 because of partialBlockCopy.
     }
     BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
 }
@@ -240,8 +253,8 @@ BOOST_AUTO_TEST_CASE(SufficientPreforwardRTTest)
         BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[1]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
 
         CBlock block2;
-        std::vector<CTransactionRef> vtx_missing;
-        BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == READ_STATUS_OK);
+        PartiallyDownloadedBlock partialBlockCopy = partialBlock;
+        BOOST_CHECK(partialBlock.FillBlock(block2, {}) == READ_STATUS_OK);
         BOOST_CHECK_EQUAL(block.GetHash().ToString(), block2.GetHash().ToString());
         bool mutated;
         BOOST_CHECK_EQUAL(block.hashMerkleRoot.ToString(), BlockMerkleRoot(block2, &mutated).ToString());
@@ -250,7 +263,7 @@ BOOST_AUTO_TEST_CASE(SufficientPreforwardRTTest)
         txhash = block.vtx[1]->GetHash();
         block.vtx.clear();
         block2.vtx.clear();
-        BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
+        BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1); // + 1 because of partialBlockCopy.
     }
     BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
 }
diff --git a/src/test/test_bitcoin.cpp b/src/test/test_bitcoin.cpp
@@ -151,7 +151,7 @@ CTxMemPoolEntry TestMemPoolEntryHelper::FromTx(const CTransaction &txn, CTxMemPo
     // Hack to assume either its completely dependent on other mempool txs or not at all
     CAmount inChainValue = hasNoDependencies ? txn.GetValueOut() : 0;
 
-    return CTxMemPoolEntry(txn, nFee, nTime, dPriority, nHeight,
+    return CTxMemPoolEntry(MakeTransactionRef(txn), nFee, nTime, dPriority, nHeight,
                            hasNoDependencies, inChainValue, spendsCoinbase, sigOpCost, lp);
 }
 
diff --git a/src/test/txvalidationcache_tests.cpp b/src/test/txvalidationcache_tests.cpp
@@ -23,7 +23,7 @@ ToMemPool(CMutableTransaction& tx)
     LOCK(cs_main);
 
     CValidationState state;
-    return AcceptToMemoryPool(mempool, state, tx, false, NULL, true, 0);
+    return AcceptToMemoryPool(mempool, state, MakeTransactionRef(tx), false, NULL, true, 0);
 }
 
 BOOST_FIXTURE_TEST_CASE(tx_mempool_block_doublespend, TestChain100Setup)
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
diff --git a/src/txmempool.h b/src/txmempool.h
diff --git a/src/validation.cpp b/src/validation.cpp
diff --git a/src/validation.h b/src/validation.h
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp

Original file line number	Diff line number	Diff line change
`@@ -18,7 +18,7 @@ static void AddTx(const CTransaction& tx, const CAmount& nFee, CTxMemPool& pool)`
`18`	`18`	`unsigned int sigOpCost = 4;`
`19`	`19`	`LockPoints lp;`
`20`	`20`	`pool.addUnchecked(tx.GetHash(), CTxMemPoolEntry(`
`21`		`- tx, nFee, nTime, dPriority, nHeight, pool.HasNoInputsOf(tx),`
	`21`	`+ MakeTransactionRef(tx), nFee, nTime, dPriority, nHeight, pool.HasNoInputsOf(tx),`
`22`	`22`	`tx.GetValueOut(), spendsCoinbase, sigOpCost, lp));`
`23`	`23`	`}`
`24`	`24`
Original file line number	Diff line number	Diff line change
`@@ -151,7 +151,7 @@ CTxMemPoolEntry TestMemPoolEntryHelper::FromTx(const CTransaction &txn, CTxMemPo`
`151`	`151`	`// Hack to assume either its completely dependent on other mempool txs or not at all`
`152`	`152`	`CAmount inChainValue = hasNoDependencies ? txn.GetValueOut() : 0;`
`153`	`153`
`154`		`- return CTxMemPoolEntry(txn, nFee, nTime, dPriority, nHeight,`
	`154`	`+ return CTxMemPoolEntry(MakeTransactionRef(txn), nFee, nTime, dPriority, nHeight,`
`155`	`155`	`hasNoDependencies, inChainValue, spendsCoinbase, sigOpCost, lp);`
`156`	`156`	`}`
`157`	`157`
Original file line number	Diff line number	Diff line change
`@@ -23,7 +23,7 @@ ToMemPool(CMutableTransaction& tx)`
`23`	`23`	`LOCK(cs_main);`
`24`	`24`
`25`	`25`	`CValidationState state;`
`26`		`- return AcceptToMemoryPool(mempool, state, tx, false, NULL, true, 0);`
	`26`	`+ return AcceptToMemoryPool(mempool, state, MakeTransactionRef(tx), false, NULL, true, 0);`
`27`	`27`	`}`
`28`	`28`
`29`	`29`	`BOOST_FIXTURE_TEST_CASE(tx_mempool_block_doublespend, TestChain100Setup)`