tidy: modernize-use-equals-default

src/.clang-tidy

@@ -10,6 +10,7 @@ misc-unused-using-decls,
 misc-no-recursion,
 modernize-use-default-member-init,
 modernize-use-emplace,
+modernize-use-equals-default,
 modernize-use-noexcept,
 modernize-use-nullptr,
 performance-*,

src/arith_uint256.h

@@ -240,7 +240,7 @@ class base_uint
 /** 256-bit unsigned big integer. */
 class arith_uint256 : public base_uint<256> {
 public:
-    arith_uint256() {}
+    arith_uint256() = default;
     arith_uint256(const base_uint<256>& b) : base_uint<256>(b) {}
     arith_uint256(uint64_t b) : base_uint<256>(b) {}
 

src/blockencodings.h

@@ -59,7 +59,7 @@ class BlockTransactions {
     uint256 blockhash;
     std::vector<CTransactionRef> txn;
 
-    BlockTransactions() {}
+    BlockTransactions() = default;
     explicit BlockTransactions(const BlockTransactionsRequest& req) :
         blockhash(req.blockhash), txn(req.indexes.size()) {}
 
@@ -109,7 +109,7 @@ class CBlockHeaderAndShortTxIDs {
     /**
      * Dummy for deserialization
      */
-    CBlockHeaderAndShortTxIDs() {}
+    CBlockHeaderAndShortTxIDs() = default;
 
     /**
      * @param[in]  nonce  This should be randomly generated, and is used for the siphash secret key

src/chain.h

@@ -66,7 +66,7 @@ class CBlockFileInfo
         READWRITE(VARINT(obj.nTimeLast));
     }
 
-    CBlockFileInfo() {}
+    CBlockFileInfo() = default;
 
     std::string ToString() const;
 

src/coins.h

@@ -154,7 +154,7 @@ class CCoinsViewCursor
 {
 public:
     CCoinsViewCursor(const uint256 &hashBlockIn): hashBlock(hashBlockIn) {}
-    virtual ~CCoinsViewCursor() {}
+    virtual ~CCoinsViewCursor() = default;
 
     virtual bool GetKey(COutPoint &key) const = 0;
     virtual bool GetValue(Coin &coin) const = 0;
@@ -198,7 +198,7 @@ class CCoinsView
     virtual std::unique_ptr<CCoinsViewCursor> Cursor() const;
 
     //! As we use CCoinsViews polymorphically, have a virtual destructor
-    virtual ~CCoinsView() {}
+    virtual ~CCoinsView() = default;
 
     //! Estimate database size (0 if not implemented)
     virtual size_t EstimateSize() const { return 0; }

src/crypto/muhash.h

@@ -97,7 +97,7 @@ class MuHash3072
 
 public:
     /* The empty set. */
-    MuHash3072() noexcept {};
+    MuHash3072() noexcept = default;
 
     /* A singleton with variable sized data in it. */
     explicit MuHash3072(Span<const unsigned char> in) noexcept;

src/crypto/sha3.h

@@ -32,7 +32,7 @@ class SHA3_256
 public:
     static constexpr size_t OUTPUT_SIZE = 32;
 
-    SHA3_256() {}
+    SHA3_256() = default;
     SHA3_256& Write(Span<const unsigned char> data);
     SHA3_256& Finalize(Span<unsigned char> output);
     SHA3_256& Reset();

src/flatfile.h

@@ -18,7 +18,7 @@ struct FlatFilePos
 
     SERIALIZE_METHODS(FlatFilePos, obj) { READWRITE(VARINT_MODE(obj.nFile, VarIntMode::NONNEGATIVE_SIGNED), VARINT(obj.nPos)); }
 
-    FlatFilePos() {}
+    FlatFilePos() = default;
 
     FlatFilePos(int nFileIn, unsigned int nPosIn) :
         nFile(nFileIn),

src/headerssync.h

@@ -100,7 +100,7 @@ struct CompressedHeader {
 
 class HeadersSyncState {
 public:
-    ~HeadersSyncState() {}
+    ~HeadersSyncState() = default;
 
     enum class State {
         /** PRESYNC means the peer has not yet demonstrated their chain has

src/httpserver.h

@@ -156,7 +156,7 @@ class HTTPClosure
 {
 public:
     virtual void operator()() = 0;
-    virtual ~HTTPClosure() {}
+    virtual ~HTTPClosure() = default;
 };
 
 /** Event class. This can be used either as a cross-thread trigger or as a timer.

src/index/disktxpos.h

@@ -20,7 +20,7 @@ struct CDiskTxPos : public FlatFilePos
     CDiskTxPos(const FlatFilePos &blockIn, unsigned int nTxOffsetIn) : FlatFilePos(blockIn.nFile, blockIn.nPos), nTxOffset(nTxOffsetIn) {
     }
 
-    CDiskTxPos() {}
+    CDiskTxPos() = default;
 };
 
 #endif // BITCOIN_INDEX_DISKTXPOS_H

src/interfaces/chain.h

@@ -123,7 +123,7 @@ struct BlockInfo {
 class Chain
 {
 public:
-    virtual ~Chain() {}
+    virtual ~Chain() = default;
 
     //! Get current chain height, not including genesis block (returns 0 if
     //! chain only contains genesis block, nullopt if chain does not contain
@@ -309,7 +309,7 @@ class Chain
     class Notifications
     {
     public:
-        virtual ~Notifications() {}
+        virtual ~Notifications() = default;
         virtual void transactionAddedToMempool(const CTransactionRef& tx) {}
         virtual void transactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason) {}
         virtual void blockConnected(ChainstateRole role, const BlockInfo& block) {}
@@ -371,7 +371,7 @@ class Chain
 class ChainClient
 {
 public:
-    virtual ~ChainClient() {}
+    virtual ~ChainClient() = default;
 
     //! Register rpcs.
     virtual void registerRpcs() = 0;

src/interfaces/echo.h

@@ -13,7 +13,7 @@ namespace interfaces {
 class Echo
 {
 public:
-    virtual ~Echo() {}
+    virtual ~Echo() = default;
 
     //! Echo provided string.
     virtual std::string echo(const std::string& echo) = 0;

src/interfaces/handler.h

@@ -22,7 +22,7 @@ namespace interfaces {
 class Handler
 {
 public:
-    virtual ~Handler() {}
+    virtual ~Handler() = default;
 
     //! Disconnect the handler.
     virtual void disconnect() = 0;

src/interfaces/mining.h

@@ -26,7 +26,7 @@ namespace interfaces {
 class Mining
 {
 public:
-    virtual ~Mining() {}
+    virtual ~Mining() = default;
 
     //! If this chain is exclusively used for testing
     virtual bool isTestChain() = 0;

src/interfaces/node.h

@@ -59,7 +59,7 @@ struct BlockAndHeaderTipInfo
 class ExternalSigner
 {
 public:
-    virtual ~ExternalSigner() {};
+    virtual ~ExternalSigner() = default;
 
     //! Get signer display name
     virtual std::string getName() = 0;
@@ -69,7 +69,7 @@ class ExternalSigner
 class Node
 {
 public:
-    virtual ~Node() {}
+    virtual ~Node() = default;
 
     //! Init logging.
     virtual void initLogging() = 0;

src/interfaces/wallet.h

@@ -65,7 +65,7 @@ using WalletValueMap = std::map<std::string, std::string>;
 class Wallet
 {
 public:
-    virtual ~Wallet() {}
+    virtual ~Wallet() = default;
 
     //! Encrypt wallet.
     virtual bool encryptWallet(const SecureString& wallet_passphrase) = 0;

src/kernel/chainparams.h

@@ -163,7 +163,7 @@ class CChainParams
     static std::unique_ptr<const CChainParams> TestNet();
 
 protected:
-    CChainParams() {}
+    CChainParams() = default;
 
     Consensus::Params consensus;
     MessageStartChars pchMessageStart;

src/kernel/notifications_interface.h

@@ -35,7 +35,7 @@ bool IsInterrupted(const T& result)
 class Notifications
 {
 public:
-    virtual ~Notifications(){};
+    virtual ~Notifications() = default;
 
     [[nodiscard]] virtual InterruptResult blockTip(SynchronizationState state, CBlockIndex& index) { return {}; }
     virtual void headerTip(SynchronizationState state, int64_t height, int64_t timestamp, bool presync) {}

src/merkleblock.h

@@ -147,7 +147,7 @@ class CMerkleBlock
     // Create from a CBlock, matching the txids in the set
     CMerkleBlock(const CBlock& block, const std::set<Txid>& txids) : CMerkleBlock{block, nullptr, &txids} {}
 
-    CMerkleBlock() {}
+    CMerkleBlock() = default;
 
     SERIALIZE_METHODS(CMerkleBlock, obj) { READWRITE(obj.header, obj.txn); }
 

src/net.h

@@ -250,7 +250,7 @@ class CNetMessage
 /** The Transport converts one connection's sent messages to wire bytes, and received bytes back. */
 class Transport {
 public:
-    virtual ~Transport() {}
+    virtual ~Transport() = default;
 
     struct Info
     {

src/net_processing.h

@@ -76,7 +76,7 @@ class PeerManager : public CValidationInterface, public NetEventsInterface
     static std::unique_ptr<PeerManager> make(CConnman& connman, AddrMan& addrman,
                                              BanMan* banman, ChainstateManager& chainman,
                                              CTxMemPool& pool, node::Warnings& warnings, Options opts);
-    virtual ~PeerManager() { }
+    virtual ~PeerManager() = default;
 
     /**
      * Attempt to manually fetch block from a given peer. We must already have the header.

src/net_types.h

@@ -19,7 +19,7 @@ class CBanEntry
     int64_t nCreateTime{0};
     int64_t nBanUntil{0};
 
-    CBanEntry() {}
+    CBanEntry() = default;
 
     explicit CBanEntry(int64_t nCreateTimeIn)
         : nCreateTime{nCreateTimeIn} {}

src/policy/fees.h

@@ -283,7 +283,7 @@ class CBlockPolicyEstimator : public CValidationInterface
     {
         unsigned int blockHeight{0};
         unsigned int bucketIndex{0};
-        TxStatsInfo() {}
+        TxStatsInfo() = default;
     };
 
     // map of txids to information about that transaction

src/prevector.h

@@ -242,7 +242,7 @@ class prevector {
         fill(item_ptr(0), first, last);
     }
 
-    prevector() {}
+    prevector() = default;
 
     explicit prevector(size_type n) {
         resize(n);

src/primitives/block.h

@@ -133,7 +133,7 @@ struct CBlockLocator
 
     std::vector<uint256> vHave;
 
-    CBlockLocator() {}
+    CBlockLocator() = default;
 
     explicit CBlockLocator(std::vector<uint256>&& have) : vHave(std::move(have)) {}
 

src/psbt.h

@@ -225,7 +225,7 @@ struct PSBTInput
     void FillSignatureData(SignatureData& sigdata) const;
     void FromSignatureData(const SignatureData& sigdata);
     void Merge(const PSBTInput& input);
-    PSBTInput() {}
+    PSBTInput() = default;
 
     template <typename Stream>
     inline void Serialize(Stream& s) const {
@@ -726,7 +726,7 @@ struct PSBTOutput
     void FillSignatureData(SignatureData& sigdata) const;
     void FromSignatureData(const SignatureData& sigdata);
     void Merge(const PSBTOutput& output);
-    PSBTOutput() {}
+    PSBTOutput() = default;
 
     template <typename Stream>
     inline void Serialize(Stream& s) const {
@@ -967,7 +967,7 @@ struct PartiallySignedTransaction
     [[nodiscard]] bool Merge(const PartiallySignedTransaction& psbt);
     bool AddInput(const CTxIn& txin, PSBTInput& psbtin);
     bool AddOutput(const CTxOut& txout, const PSBTOutput& psbtout);
-    PartiallySignedTransaction() {}
+    PartiallySignedTransaction() = default;
     explicit PartiallySignedTransaction(const CMutableTransaction& tx);
     /**
      * Finds the UTXO for a given input index

src/qt/transactiondesc.h

@@ -29,7 +29,7 @@ class TransactionDesc: public QObject
     static QString toHTML(interfaces::Node& node, interfaces::Wallet& wallet, TransactionRecord* rec, BitcoinUnit unit);
 
 private:
-    TransactionDesc() {}
+    TransactionDesc() = default;
 
     static QString FormatTxStatus(const interfaces::WalletTxStatus& status, bool inMempool);
 };

src/rpc/server.h

@@ -48,7 +48,7 @@ bool RPCIsInWarmup(std::string *outStatus);
 class RPCTimerBase
 {
 public:
-    virtual ~RPCTimerBase() {}
+    virtual ~RPCTimerBase() = default;
 };
 
 /**
@@ -57,7 +57,7 @@ class RPCTimerBase
 class RPCTimerInterface
 {
 public:
-    virtual ~RPCTimerInterface() {}
+    virtual ~RPCTimerInterface() = default;
     /** Implementation name */
     virtual const char *Name() = 0;
     /** Factory function for timers.

src/script/interpreter.h

@@ -265,7 +265,7 @@ class BaseSignatureChecker
          return false;
     }
 
-    virtual ~BaseSignatureChecker() {}
+    virtual ~BaseSignatureChecker() = default;
 };
 
 /** Enum to specify what *TransactionSignatureChecker's behavior should be

src/script/miniscript.h

@@ -305,7 +305,7 @@ struct InputStack {
     //! Data elements.
     std::vector<std::vector<unsigned char>> stack;
     //! Construct an empty stack (valid).
-    InputStack() {}
+    InputStack() = default;
     //! Construct a valid single-element stack (with an element up to 75 bytes).
     InputStack(std::vector<unsigned char> in) : size(in.size() + 1), stack(Vector(std::move(in))) {}
     //! Change availability

src/script/script.h

@@ -430,7 +430,7 @@ class CScript : public CScriptBase
         return *this;
     }
 public:
-    CScript() { }
+    CScript() = default;
     CScript(const_iterator pbegin, const_iterator pend) : CScriptBase(pbegin, pend) { }
     CScript(std::vector<unsigned char>::const_iterator pbegin, std::vector<unsigned char>::const_iterator pend) : CScriptBase(pbegin, pend) { }
     CScript(const unsigned char* pbegin, const unsigned char* pend) : CScriptBase(pbegin, pend) { }
@@ -569,7 +569,7 @@ struct CScriptWitness
     std::vector<std::vector<unsigned char> > stack;
 
     // Some compilers complain without a default constructor
-    CScriptWitness() { }
+    CScriptWitness() = default;
 
     bool IsNull() const { return stack.empty(); }
 

src/script/sign.h

@@ -27,7 +27,7 @@ struct CMutableTransaction;
 /** Interface for signature creators. */
 class BaseSignatureCreator {
 public:
-    virtual ~BaseSignatureCreator() {}
+    virtual ~BaseSignatureCreator() = default;
     virtual const BaseSignatureChecker& Checker() const =0;
 
     /** Create a singular (non-script) signature. */
@@ -89,7 +89,7 @@ struct SignatureData {
     std::map<std::vector<uint8_t>, std::vector<uint8_t>> ripemd160_preimages; ///< Mapping from a RIPEMD160 hash to its preimage provided to solve a Script
     std::map<std::vector<uint8_t>, std::vector<uint8_t>> hash160_preimages; ///< Mapping from a HASH160 hash to its preimage provided to solve a Script
 
-    SignatureData() {}
+    SignatureData() = default;
     explicit SignatureData(const CScript& script) : scriptSig(script) {}
     void MergeSignatureData(SignatureData sigdata);
 };

src/script/signingprovider.h

@@ -150,7 +150,7 @@ std::optional<std::vector<std::tuple<int, std::vector<unsigned char>, int>>> Inf
 class SigningProvider
 {
 public:
-    virtual ~SigningProvider() {}
+    virtual ~SigningProvider() = default;
     virtual bool GetCScript(const CScriptID &scriptid, CScript& script) const { return false; }
     virtual bool HaveCScript(const CScriptID &scriptid) const { return false; }
     virtual bool GetPubKey(const CKeyID &address, CPubKey& pubkey) const { return false; }