Make CoinControl a required argument to CreateTransaction

src/qt/sendcoinsdialog.cpp

@@ -281,7 +281,7 @@ void SendCoinsDialog::on_sendButton_clicked()
 
     ctrl.signalRbf = ui->optInRBF->isChecked();
 
-    prepareStatus = model->prepareTransaction(currentTransaction, &ctrl);
+    prepareStatus = model->prepareTransaction(currentTransaction, ctrl);
 
     // process prepareStatus and on error generate message shown to user
     processSendCoinsReturn(prepareStatus,

src/qt/walletmodel.cpp

@@ -191,7 +191,7 @@ bool WalletModel::validateAddress(const QString &address)
     return addressParsed.IsValid();
 }
 
-WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransaction &transaction, const CCoinControl *coinControl)
+WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransaction &transaction, const CCoinControl& coinControl)
 {
     CAmount total = 0;
     bool fSubtractFeeFromAmount = false;
@@ -258,7 +258,7 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
         return DuplicateAddress;
     }
 
-    CAmount nBalance = getBalance(coinControl);
+    CAmount nBalance = getBalance(&coinControl);
 
     if(total > nBalance)
     {

src/qt/walletmodel.h

@@ -154,7 +154,7 @@ public:
     };
 
     // prepare transaction for getting txfee before sending coins
-    SendCoinsReturn prepareTransaction(WalletModelTransaction &transaction, const CCoinControl *coinControl = NULL);
+    SendCoinsReturn prepareTransaction(WalletModelTransaction &transaction, const CCoinControl& coinControl);
 
     // Send coins to a list of recipients
     SendCoinsReturn sendCoins(WalletModelTransaction &transaction);

src/wallet/rpcwallet.cpp

@@ -356,7 +356,7 @@ UniValue getaddressesbyaccount(const JSONRPCRequest& request)
     return ret;
 }
 
-static void SendMoney(CWallet * const pwallet, const CTxDestination &address, CAmount nValue, bool fSubtractFeeFromAmount, CWalletTx& wtxNew, CCoinControl *coin_control = nullptr)
+static void SendMoney(CWallet * const pwallet, const CTxDestination &address, CAmount nValue, bool fSubtractFeeFromAmount, CWalletTx& wtxNew, const CCoinControl& coin_control)
 {
     CAmount curBalance = pwallet->GetBalance();
 
@@ -472,7 +472,7 @@ UniValue sendtoaddress(const JSONRPCRequest& request)
 
     EnsureWalletIsUnlocked(pwallet);
 
-    SendMoney(pwallet, address.Get(), nAmount, fSubtractFeeFromAmount, wtx, &coin_control);
+    SendMoney(pwallet, address.Get(), nAmount, fSubtractFeeFromAmount, wtx, coin_control);
 
     return wtx.GetHash().GetHex();
 }
@@ -898,7 +898,8 @@ UniValue sendfrom(const JSONRPCRequest& request)
     if (nAmount > nBalance)
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Account has insufficient funds");
 
-    SendMoney(pwallet, address.Get(), nAmount, false, wtx);
+    CCoinControl no_coin_control; // This is a deprecated API
+    SendMoney(pwallet, address.Get(), nAmount, false, wtx, no_coin_control);
 
     return wtx.GetHash().GetHex();
 }
@@ -1033,7 +1034,7 @@ UniValue sendmany(const JSONRPCRequest& request)
     CAmount nFeeRequired = 0;
     int nChangePosRet = -1;
     std::string strFailReason;
-    bool fCreated = pwallet->CreateTransaction(vecSend, wtx, keyChange, nFeeRequired, nChangePosRet, strFailReason, &coin_control);
+    bool fCreated = pwallet->CreateTransaction(vecSend, wtx, keyChange, nFeeRequired, nChangePosRet, strFailReason, coin_control);
     if (!fCreated)
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, strFailReason);
     CValidationState state;

src/wallet/test/wallet_tests.cpp

@@ -13,6 +13,7 @@
 #include "rpc/server.h"
 #include "test/test_bitcoin.h"
 #include "validation.h"
+#include "wallet/coincontrol.h"
 #include "wallet/test/wallet_test_fixture.h"
 
 #include <boost/test/unit_test.hpp>
@@ -617,7 +618,8 @@ public:
         CAmount fee;
         int changePos = -1;
         std::string error;
-        BOOST_CHECK(wallet->CreateTransaction({recipient}, wtx, reservekey, fee, changePos, error));
+        CCoinControl dummy;
+        BOOST_CHECK(wallet->CreateTransaction({recipient}, wtx, reservekey, fee, changePos, error, dummy));
         CValidationState state;
         BOOST_CHECK(wallet->CommitTransaction(wtx, reservekey, nullptr, state));
         auto it = wallet->mapWallet.find(wtx.GetHash());

src/wallet/wallet.cpp

@@ -2469,9 +2469,9 @@ bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nC
 
     CReserveKey reservekey(this);
     CWalletTx wtx;
-    if (!CreateTransaction(vecSend, wtx, reservekey, nFeeRet, nChangePosInOut, strFailReason, &coinControl, false))
+    if (!CreateTransaction(vecSend, wtx, reservekey, nFeeRet, nChangePosInOut, strFailReason, coinControl, false)) {
         return false;
-
+    }
     if (nChangePosInOut != -1)
         tx.vout.insert(tx.vout.begin() + nChangePosInOut, wtx.tx->vout[nChangePosInOut]);
 
@@ -2502,7 +2502,7 @@ bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nC
 }
 
 bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, CAmount& nFeeRet,
-                                int& nChangePosInOut, std::string& strFailReason, const CCoinControl* coinControl, bool sign)
+                                int& nChangePosInOut, std::string& strFailReason, const CCoinControl& coin_control, bool sign)
 {
     CAmount nValue = 0;
     int nChangePosRequest = nChangePosInOut;
@@ -2567,7 +2567,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
         LOCK2(cs_main, cs_wallet);
         {
             std::vector<COutput> vAvailableCoins;
-            AvailableCoins(vAvailableCoins, true, coinControl);
+            AvailableCoins(vAvailableCoins, true, &coin_control);
 
             // Create change script that will be used if we need change
             // TODO: pass in scriptChange instead of reservekey so
@@ -2575,12 +2575,9 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
             CScript scriptChange;
 
             // coin control: send change to custom address
-            if (coinControl && !boost::get<CNoDestination>(&coinControl->destChange))
-                scriptChange = GetScriptForDestination(coinControl->destChange);
-
-            // no coin control: send change to newly generated address
-            else
-            {
+            if (!boost::get<CNoDestination>(&coin_control.destChange)) {
+                scriptChange = GetScriptForDestination(coin_control.destChange);
+            } else { // no coin control: send change to newly generated address
                 // Note: We use a new key here to keep it from being obvious which side is the change.
                 //  The drawback is that by not reusing a previous key, the change may be lost if a
                 //  backup is restored, if the backup doesn't have the new private key for the change.
@@ -2654,7 +2651,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
                 if (pick_new_inputs) {
                     nValueIn = 0;
                     setCoins.clear();
-                    if (!SelectCoins(vAvailableCoins, nValueToSelect, setCoins, nValueIn, coinControl))
+                    if (!SelectCoins(vAvailableCoins, nValueToSelect, setCoins, nValueIn, &coin_control))
                     {
                         strFailReason = _("Insufficient funds");
                         return false;
@@ -2705,8 +2702,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
                 // to avoid conflicting with other possible uses of nSequence,
                 // and in the spirit of "smallest possible change from prior
                 // behavior."
-                bool rbf = coinControl ? coinControl->signalRbf : fWalletRbf;
-                const uint32_t nSequence = rbf ? MAX_BIP125_RBF_SEQUENCE : (std::numeric_limits<unsigned int>::max() - 1);
+                const uint32_t nSequence = coin_control.signalRbf ? MAX_BIP125_RBF_SEQUENCE : (std::numeric_limits<unsigned int>::max() - 1);
                 for (const auto& coin : setCoins)
                     txNew.vin.push_back(CTxIn(coin.outpoint,CScript(),
                                               nSequence));
@@ -2727,15 +2723,15 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
 
                 // Allow to override the default confirmation target over the CoinControl instance
                 int currentConfirmationTarget = nTxConfirmTarget;
-                if (coinControl && coinControl->nConfirmTarget > 0)
-                    currentConfirmationTarget = coinControl->nConfirmTarget;
+                if (coin_control.nConfirmTarget > 0)
+                    currentConfirmationTarget = coin_control.nConfirmTarget;
 
                 // Allow to override the default fee estimate mode over the CoinControl instance
-                bool conservative_estimate = CalculateEstimateType(coinControl ? coinControl->m_fee_mode : FeeEstimateMode::UNSET, rbf);
+                bool conservative_estimate = CalculateEstimateType(coin_control.m_fee_mode, coin_control.signalRbf);
 
                 CAmount nFeeNeeded = GetMinimumFee(nBytes, currentConfirmationTarget, ::mempool, ::feeEstimator, &feeCalc, false /* ignoreGlobalPayTxFee */, conservative_estimate);
-                if (coinControl && coinControl->fOverrideFeeRate)
-                    nFeeNeeded = coinControl->nFeeRate.GetFee(nBytes);
+                if (coin_control.fOverrideFeeRate)
+                    nFeeNeeded = coin_control.nFeeRate.GetFee(nBytes);
 
                 // If we made it here and we aren't even able to meet the relay fee on the next pass, give up
                 // because we must be at the maximum allowed fee.

src/wallet/wallet.h

@@ -949,7 +949,7 @@ public:
      * @note passing nChangePosInOut as -1 will result in setting a random position
      */
     bool CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, CAmount& nFeeRet, int& nChangePosInOut,
-                           std::string& strFailReason, const CCoinControl *coinControl = NULL, bool sign = true);
+                           std::string& strFailReason, const CCoinControl& coin_control, bool sign = true);
     bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey, CConnman* connman, CValidationState& state);
 
     void ListAccountCreditDebit(const std::string& strAccount, std::list<CAccountingEntry>& entries);