1 files changed, 6 insertions, 6 deletions

diff --git a/src/miner.cpp b/src/miner.cpp
index 6ad63207cc..2b65cbc65e 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -134,7 +134,7 @@ std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(const CScript& sc
     pblock = &pblocktemplate->block; // pointer for convenience
 
     // Add dummy coinbase tx as first transaction
-    pblock->vtx.push_back(CTransaction());
+    pblock->vtx.emplace_back();
     pblocktemplate->vTxFees.push_back(-1); // updated at end
     pblocktemplate->vTxSigOpsCost.push_back(-1); // updated at end
 
@@ -178,7 +178,7 @@ std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(const CScript& sc
     coinbaseTx.vout[0].scriptPubKey = scriptPubKeyIn;
     coinbaseTx.vout[0].nValue = nFees + GetBlockSubsidy(nHeight, chainparams.GetConsensus());
     coinbaseTx.vin[0].scriptSig = CScript() << nHeight << OP_0;
-    pblock->vtx[0] = coinbaseTx;
+    pblock->vtx[0] = std::make_shared<const CTransaction>(std::move(coinbaseTx));
     pblocktemplate->vchCoinbaseCommitment = GenerateCoinbaseCommitment(*pblock, pindexPrev, chainparams.GetConsensus());
     pblocktemplate->vTxFees[0] = -nFees;
 
@@ -190,7 +190,7 @@ std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(const CScript& sc
     UpdateTime(pblock, chainparams.GetConsensus(), pindexPrev);
     pblock->nBits          = GetNextWorkRequired(pindexPrev, pblock, chainparams.GetConsensus());
     pblock->nNonce         = 0;
-    pblocktemplate->vTxSigOpsCost[0] = WITNESS_SCALE_FACTOR * GetLegacySigOpCount(pblock->vtx[0]);
+    pblocktemplate->vTxSigOpsCost[0] = WITNESS_SCALE_FACTOR * GetLegacySigOpCount(*pblock->vtx[0]);
 
     CValidationState state;
     if (!TestBlockValidity(state, chainparams, *pblock, pindexPrev, false, false)) {
@@ -312,7 +312,7 @@ bool BlockAssembler::TestForBlock(CTxMemPool::txiter iter)
 
 void BlockAssembler::AddToBlock(CTxMemPool::txiter iter)
 {
-    pblock->vtx.push_back(iter->GetTx());
+    pblock->vtx.emplace_back(iter->GetSharedTx());
     pblocktemplate->vTxFees.push_back(iter->GetFee());
     pblocktemplate->vTxSigOpsCost.push_back(iter->GetSigOpCost());
     if (fNeedSizeAccounting) {
@@ -601,10 +601,10 @@ void IncrementExtraNonce(CBlock* pblock, const CBlockIndex* pindexPrev, unsigned
     }
     ++nExtraNonce;
     unsigned int nHeight = pindexPrev->nHeight+1; // Height first in coinbase required for block.version=2
-    CMutableTransaction txCoinbase(pblock->vtx[0]);
+    CMutableTransaction txCoinbase(*pblock->vtx[0]);
     txCoinbase.vin[0].scriptSig = (CScript() << nHeight << CScriptNum(nExtraNonce)) + COINBASE_FLAGS;
     assert(txCoinbase.vin[0].scriptSig.size() <= 100);
 
-    pblock->vtx[0] = txCoinbase;
+    pblock->vtx[0] = std::make_shared<const CTransaction>(std::move(txCoinbase));
     pblock->hashMerkleRoot = BlockMerkleRoot(*pblock);
 }