Merge commit '5ed08c473' into merge/geth-v1.11.3

eth/api.go

@@ -267,20 +267,24 @@ func (api *DebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error) {
 		_, stateDb := api.eth.miner.Pending()
 		return stateDb.RawDump(opts), nil
 	}
-	var block *types.Block
+	var header *types.Header
 	if blockNr == rpc.LatestBlockNumber {
-		block = api.eth.blockchain.CurrentBlock()
+		header = api.eth.blockchain.CurrentBlock()
 	} else if blockNr == rpc.FinalizedBlockNumber {
-		block = api.eth.blockchain.CurrentFinalizedBlock()
+		header = api.eth.blockchain.CurrentFinalBlock()
 	} else if blockNr == rpc.SafeBlockNumber {
-		block = api.eth.blockchain.CurrentSafeBlock()
+		header = api.eth.blockchain.CurrentSafeBlock()
 	} else {
-		block = api.eth.blockchain.GetBlockByNumber(uint64(blockNr))
+		block := api.eth.blockchain.GetBlockByNumber(uint64(blockNr))
+		if block == nil {
+			return state.Dump{}, fmt.Errorf("block #%d not found", blockNr)
+		}
+		header = block.Header()
 	}
-	if block == nil {
+	if header == nil {
 		return state.Dump{}, fmt.Errorf("block #%d not found", blockNr)
 	}
-	stateDb, err := api.eth.BlockChain().StateAt(block.Root())
+	stateDb, err := api.eth.BlockChain().StateAt(header.Root)
 	if err != nil {
 		return state.Dump{}, err
 	}
@@ -347,20 +351,24 @@ func (api *DebugAPI) AccountRange(blockNrOrHash rpc.BlockNumberOrHash, start hex
 			// the miner and operate on those
 			_, stateDb = api.eth.miner.Pending()
 		} else {
-			var block *types.Block
+			var header *types.Header
 			if number == rpc.LatestBlockNumber {
-				block = api.eth.blockchain.CurrentBlock()
+				header = api.eth.blockchain.CurrentBlock()
 			} else if number == rpc.FinalizedBlockNumber {
-				block = api.eth.blockchain.CurrentFinalizedBlock()
+				header = api.eth.blockchain.CurrentFinalBlock()
 			} else if number == rpc.SafeBlockNumber {
-				block = api.eth.blockchain.CurrentSafeBlock()
+				header = api.eth.blockchain.CurrentSafeBlock()
 			} else {
-				block = api.eth.blockchain.GetBlockByNumber(uint64(number))
+				block := api.eth.blockchain.GetBlockByNumber(uint64(number))
+				if block == nil {
+					return state.IteratorDump{}, fmt.Errorf("block #%d not found", number)
+				}
+				header = block.Header()
 			}
-			if block == nil {
+			if header == nil {
 				return state.IteratorDump{}, fmt.Errorf("block #%d not found", number)
 			}
-			stateDb, err = api.eth.BlockChain().StateAt(block.Root())
+			stateDb, err = api.eth.BlockChain().StateAt(header.Root)
 			if err != nil {
 				return state.IteratorDump{}, err
 			}
@@ -552,7 +560,7 @@ func (api *DebugAPI) GetAccessibleState(from, to rpc.BlockNumber) (uint64, error
 			if block == nil {
 				return 0, fmt.Errorf("current block missing")
 			}
-			return block.NumberU64(), nil
+			return block.Number.Uint64(), nil
 		}
 		return uint64(num.Int64()), nil
 	}

eth/api_backend.go

@@ -55,7 +55,7 @@ func (b *EthAPIBackend) ChainConfig() *params.ChainConfig {
 	return b.eth.blockchain.Config()
 }
 
-func (b *EthAPIBackend) CurrentBlock() *types.Block {
+func (b *EthAPIBackend) CurrentBlock() *types.Header {
 	return b.eth.blockchain.CurrentBlock()
 }
 
@@ -72,19 +72,19 @@ func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumb
 	}
 	// Otherwise resolve and return the block
 	if number == rpc.LatestBlockNumber {
-		return b.eth.blockchain.CurrentBlock().Header(), nil
+		return b.eth.blockchain.CurrentBlock(), nil
 	}
 	if number == rpc.FinalizedBlockNumber {
-		block := b.eth.blockchain.CurrentFinalizedBlock()
+		block := b.eth.blockchain.CurrentFinalBlock()
 		if block != nil {
-			return block.Header(), nil
+			return block, nil
 		}
 		return nil, errors.New("finalized block not found")
 	}
 	if number == rpc.SafeBlockNumber {
 		block := b.eth.blockchain.CurrentSafeBlock()
 		if block != nil {
-			return block.Header(), nil
+			return block, nil
 		}
 		return nil, errors.New("safe block not found")
 	}
@@ -120,13 +120,16 @@ func (b *EthAPIBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumbe
 	}
 	// Otherwise resolve and return the block
 	if number == rpc.LatestBlockNumber {
-		return b.eth.blockchain.CurrentBlock(), nil
+		header := b.eth.blockchain.CurrentBlock()
+		return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
 	}
 	if number == rpc.FinalizedBlockNumber {
-		return b.eth.blockchain.CurrentFinalizedBlock(), nil
+		header := b.eth.blockchain.CurrentFinalBlock()
+		return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
 	}
 	if number == rpc.SafeBlockNumber {
-		return b.eth.blockchain.CurrentSafeBlock(), nil
+		header := b.eth.blockchain.CurrentSafeBlock()
+		return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
 	}
 	return b.eth.blockchain.GetBlockByNumber(uint64(number)), nil
 }

eth/catalyst/api.go

@@ -237,6 +237,10 @@ func (api *ConsensusAPI) forkchoiceUpdated(update engine.ForkchoiceStateV1, payl
 			log.Warn("Forkchoice requested unknown head", "hash", update.HeadBlockHash)
 			return engine.STATUS_SYNCING, nil
 		}
+		// If the finalized hash is known, we can direct the downloader to move
+		// potentially more data to the freezer from the get go.
+		finalized := api.remoteBlocks.get(update.FinalizedBlockHash)
+
 		// Header advertised via a past newPayload request. Start syncing to it.
 		// Before we do however, make sure any legacy sync in switched off so we
 		// don't accidentally have 2 cycles running.
@@ -244,8 +248,16 @@ func (api *ConsensusAPI) forkchoiceUpdated(update engine.ForkchoiceStateV1, payl
 			merger.ReachTTD()
 			api.eth.Downloader().Cancel()
 		}
-		log.Info("Forkchoice requested sync to new head", "number", header.Number, "hash", header.Hash())
-		if err := api.eth.Downloader().BeaconSync(api.eth.SyncMode(), header); err != nil {
+		context := []interface{}{"number", header.Number, "hash", header.Hash()}
+		if update.FinalizedBlockHash != (common.Hash{}) {
+			if finalized == nil {
+				context = append(context, []interface{}{"finalized", "unknown"}...)
+			} else {
+				context = append(context, []interface{}{"finalized", finalized.Number}...)
+			}
+		}
+		log.Info("Forkchoice requested sync to new head", context...)
+		if err := api.eth.Downloader().BeaconSync(api.eth.SyncMode(), header, finalized); err != nil {
 			return engine.STATUS_SYNCING, err
 		}
 		return engine.STATUS_SYNCING, nil
@@ -289,7 +301,7 @@ func (api *ConsensusAPI) forkchoiceUpdated(update engine.ForkchoiceStateV1, payl
 	} else {
 		// If the head block is already in our canonical chain, the beacon client is
 		// probably resyncing. Ignore the update.
-		log.Info("Ignoring beacon update to old head", "number", block.NumberU64(), "hash", update.HeadBlockHash, "age", common.PrettyAge(time.Unix(int64(block.Time()), 0)), "have", api.eth.BlockChain().CurrentBlock().NumberU64())
+		log.Info("Ignoring beacon update to old head", "number", block.NumberU64(), "hash", update.HeadBlockHash, "age", common.PrettyAge(time.Unix(int64(block.Time()), 0)), "have", api.eth.BlockChain().CurrentBlock().Number)
 		return valid(nil), nil
 	}
 	api.eth.SetSynced()
@@ -310,7 +322,7 @@ func (api *ConsensusAPI) forkchoiceUpdated(update engine.ForkchoiceStateV1, payl
 			return engine.STATUS_INVALID, engine.InvalidForkChoiceState.With(errors.New("final block not in canonical chain"))
 		}
 		// Set the finalized block
-		api.eth.BlockChain().SetFinalized(finalBlock)
+		api.eth.BlockChain().SetFinalized(finalBlock.Header())
 	}
 	// Check if the safe block hash is in our canonical tree, if not somethings wrong
 	if update.SafeBlockHash != (common.Hash{}) {
@@ -324,7 +336,7 @@ func (api *ConsensusAPI) forkchoiceUpdated(update engine.ForkchoiceStateV1, payl
 			return engine.STATUS_INVALID, engine.InvalidForkChoiceState.With(errors.New("safe block not in canonical chain"))
 		}
 		// Set the safe block
-		api.eth.BlockChain().SetSafe(safeBlock)
+		api.eth.BlockChain().SetSafe(safeBlock.Header())
 	}
 	// If payload generation was requested, create a new block to be potentially
 	// sealed by the beacon client. The payload will be requested later, and we
@@ -792,7 +804,7 @@ func (api *ConsensusAPI) GetPayloadBodiesByRangeV1(start, count hexutil.Uint64)
 		return nil, engine.TooLargeRequest.With(fmt.Errorf("requested count too large: %v", count))
 	}
 	// limit count up until current
-	current := api.eth.BlockChain().CurrentBlock().NumberU64()
+	current := api.eth.BlockChain().CurrentBlock().Number.Uint64()
 	last := uint64(start) + uint64(count) - 1
 	if last > current {
 		last = current

eth/catalyst/api_test.go

@@ -19,8 +19,11 @@ package catalyst
 import (
 	"bytes"
 	"context"
+	crand "crypto/rand"
 	"fmt"
 	"math/big"
+	"math/rand"
+	"reflect"
 	"sync"
 	"testing"
 	"time"
@@ -41,7 +44,6 @@ import (
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/params"
-	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/trie"
 )
@@ -248,8 +250,8 @@ func TestInvalidPayloadTimestamp(t *testing.T) {
 		shouldErr bool
 	}{
 		{0, true},
-		{parent.Time(), true},
-		{parent.Time() - 1, true},
+		{parent.Time, true},
+		{parent.Time - 1, true},
 
 		// TODO (MariusVanDerWijden) following tests are currently broken,
 		// fixed in upcoming merge-kiln-v2 pr
@@ -262,7 +264,7 @@ func TestInvalidPayloadTimestamp(t *testing.T) {
 			params := engine.PayloadAttributes{
 				Timestamp:             test.time,
 				Random:                crypto.Keccak256Hash([]byte{byte(123)}),
-				SuggestedFeeRecipient: parent.Coinbase(),
+				SuggestedFeeRecipient: parent.Coinbase,
 			}
 			fcState := engine.ForkchoiceStateV1{
 				HeadBlockHash:      parent.Hash(),
@@ -319,7 +321,7 @@ func TestEth2NewBlock(t *testing.T) {
 			t.Fatalf("Failed to insert block: %v", err)
 		case newResp.Status != "VALID":
 			t.Fatalf("Failed to insert block: %v", newResp.Status)
-		case ethservice.BlockChain().CurrentBlock().NumberU64() != block.NumberU64()-1:
+		case ethservice.BlockChain().CurrentBlock().Number.Uint64() != block.NumberU64()-1:
 			t.Fatalf("Chain head shouldn't be updated")
 		}
 		checkLogEvents(t, newLogCh, rmLogsCh, 0, 0)
@@ -331,7 +333,7 @@ func TestEth2NewBlock(t *testing.T) {
 		if _, err := api.ForkchoiceUpdatedV1(fcState, nil); err != nil {
 			t.Fatalf("Failed to insert block: %v", err)
 		}
-		if have, want := ethservice.BlockChain().CurrentBlock().NumberU64(), block.NumberU64(); have != want {
+		if have, want := ethservice.BlockChain().CurrentBlock().Number.Uint64(), block.NumberU64(); have != want {
 			t.Fatalf("Chain head should be updated, have %d want %d", have, want)
 		}
 		checkLogEvents(t, newLogCh, rmLogsCh, 1, 0)
@@ -341,7 +343,7 @@ func TestEth2NewBlock(t *testing.T) {
 
 	// Introduce fork chain
 	var (
-		head = ethservice.BlockChain().CurrentBlock().NumberU64()
+		head = ethservice.BlockChain().CurrentBlock().Number.Uint64()
 	)
 	parent = preMergeBlocks[len(preMergeBlocks)-1]
 	for i := 0; i < 10; i++ {
@@ -359,7 +361,7 @@ func TestEth2NewBlock(t *testing.T) {
 		if err != nil || newResp.Status != "VALID" {
 			t.Fatalf("Failed to insert block: %v", err)
 		}
-		if ethservice.BlockChain().CurrentBlock().NumberU64() != head {
+		if ethservice.BlockChain().CurrentBlock().Number.Uint64() != head {
 			t.Fatalf("Chain head shouldn't be updated")
 		}
 
@@ -371,7 +373,7 @@ func TestEth2NewBlock(t *testing.T) {
 		if _, err := api.ForkchoiceUpdatedV1(fcState, nil); err != nil {
 			t.Fatalf("Failed to insert block: %v", err)
 		}
-		if ethservice.BlockChain().CurrentBlock().NumberU64() != block.NumberU64() {
+		if ethservice.BlockChain().CurrentBlock().Number.Uint64() != block.NumberU64() {
 			t.Fatalf("Chain head should be updated")
 		}
 		parent, head = block, block.NumberU64()
@@ -389,7 +391,7 @@ func TestEth2DeepReorg(t *testing.T) {
 		var (
 			api    = NewConsensusAPI(ethservice, nil)
 			parent = preMergeBlocks[len(preMergeBlocks)-core.TriesInMemory-1]
-			head   = ethservice.BlockChain().CurrentBlock().NumberU64()
+			head   = ethservice.BlockChain().CurrentBlock().Number.Uint64()()
 		)
 		if ethservice.BlockChain().HasBlockAndState(parent.Hash(), parent.NumberU64()) {
 			t.Errorf("Block %d not pruned", parent.NumberU64())
@@ -410,13 +412,13 @@ func TestEth2DeepReorg(t *testing.T) {
 			if err != nil || newResp.Status != "VALID" {
 				t.Fatalf("Failed to insert block: %v", err)
 			}
-			if ethservice.BlockChain().CurrentBlock().NumberU64() != head {
+			if ethservice.BlockChain().CurrentBlock().Number.Uint64()() != head {
 				t.Fatalf("Chain head shouldn't be updated")
 			}
 			if err := api.setHead(block.Hash()); err != nil {
 				t.Fatalf("Failed to set head: %v", err)
 			}
-			if ethservice.BlockChain().CurrentBlock().NumberU64() != block.NumberU64() {
+			if ethservice.BlockChain().CurrentBlock().Number.Uint64()() != block.NumberU64() {
 				t.Fatalf("Chain head should be updated")
 			}
 			parent, head = block, block.NumberU64()
@@ -466,25 +468,28 @@ func TestFullAPI(t *testing.T) {
 		logCode = common.Hex2Bytes("60606040525b7f24ec1d3ff24c2f6ff210738839dbc339cd45a5294d85c79361016243157aae7b60405180905060405180910390a15b600a8060416000396000f360606040526008565b00")
 	)
 
-	callback := func(parent *types.Block) {
-		statedb, _ := ethservice.BlockChain().StateAt(parent.Root())
+	callback := func(parent *types.Header) {
+		statedb, _ := ethservice.BlockChain().StateAt(parent.Root)
 		nonce := statedb.GetNonce(testAddr)
 		tx, _ := types.SignTx(types.NewContractCreation(nonce, new(big.Int), 1000000, big.NewInt(2*params.InitialBaseFee), logCode), types.LatestSigner(ethservice.BlockChain().Config()), testKey)
 		ethservice.TxPool().AddLocal(tx)
 	}
 
-	setupBlocks(t, ethservice, 10, parent, callback)
+	setupBlocks(t, ethservice, 10, parent, callback, nil)
 }
 
-func setupBlocks(t *testing.T, ethservice *eth.Ethereum, n int, parent *types.Block, callback func(parent *types.Block)) []*types.Block {
+func setupBlocks(t *testing.T, ethservice *eth.Ethereum, n int, parent *types.Header, callback func(parent *types.Header), withdrawals [][]*types.Withdrawal) []*types.Header {
 	api := NewConsensusAPI(ethservice)
-	var blocks []*types.Block
+	var blocks []*types.Header
 	for i := 0; i < n; i++ {
 		callback(parent)
+		var w []*types.Withdrawal
+		if withdrawals != nil {
+			w = withdrawals[i]
+		}
 
-		payload := getNewPayload(t, api, parent)
-
-		execResp, err := api.NewPayloadV1(*payload)
+		payload := getNewPayload(t, api, parent, w)
+		execResp, err := api.NewPayloadV2(*payload)
 		if err != nil {
 			t.Fatalf("can't execute payload: %v", err)
 		}
@@ -499,10 +504,10 @@ func setupBlocks(t *testing.T, ethservice *eth.Ethereum, n int, parent *types.Bl
 		if _, err := api.ForkchoiceUpdatedV1(fcState, nil); err != nil {
 			t.Fatalf("Failed to insert block: %v", err)
 		}
-		if ethservice.BlockChain().CurrentBlock().NumberU64() != payload.Number {
+		if ethservice.BlockChain().CurrentBlock().Number.Uint64() != payload.Number {
 			t.Fatal("Chain head should be updated")
 		}
-		if ethservice.BlockChain().CurrentFinalizedBlock().NumberU64() != payload.Number-1 {
+		if ethservice.BlockChain().CurrentFinalBlock().Number.Uint64() != payload.Number-1 {
 			t.Fatal("Finalized block should be updated")
 		}
 		parent = ethservice.BlockChain().CurrentBlock()
@@ -585,7 +590,7 @@ func TestNewPayloadOnInvalidChain(t *testing.T) {
 		logCode = common.Hex2Bytes("60606040525b7f24ec1d3ff24c2f6ff210738839dbc339cd45a5294d85c79361016243157aae7b60405180905060405180910390a15b600a8060416000396000f360606040526008565b00")
 	)
 	for i := 0; i < 10; i++ {
-		statedb, _ := ethservice.BlockChain().StateAt(parent.Root())
+		statedb, _ := ethservice.BlockChain().StateAt(parent.Root)
 		tx := types.MustSignNewTx(testKey, signer, &types.LegacyTx{
 			Nonce:    statedb.GetNonce(testAddr),
 			Value:    new(big.Int),
@@ -596,9 +601,9 @@ func TestNewPayloadOnInvalidChain(t *testing.T) {
 		ethservice.TxPool().AddRemotesSync([]*types.Transaction{tx})
 		var (
 			params = engine.PayloadAttributes{
-				Timestamp:             parent.Time() + 1,
+				Timestamp:             parent.Time + 1,
 				Random:                crypto.Keccak256Hash([]byte{byte(i)}),
-				SuggestedFeeRecipient: parent.Coinbase(),
+				SuggestedFeeRecipient: parent.Coinbase,
 			}
 			fcState = engine.ForkchoiceStateV1{
 				HeadBlockHash:      parent.Hash(),
@@ -645,7 +650,7 @@ func TestNewPayloadOnInvalidChain(t *testing.T) {
 		if _, err := api.ForkchoiceUpdatedV1(fcState, nil); err != nil {
 			t.Fatalf("Failed to insert block: %v", err)
 		}
-		if ethservice.BlockChain().CurrentBlock().NumberU64() != payload.Number {
+		if ethservice.BlockChain().CurrentBlock().Number.Uint64() != payload.Number {
 			t.Fatalf("Chain head should be updated")
 		}
 		parent = ethservice.BlockChain().CurrentBlock()
@@ -676,10 +681,10 @@ func TestEmptyBlocks(t *testing.T) {
 	api := NewConsensusAPI(ethservice)
 
 	// Setup 10 blocks on the canonical chain
-	setupBlocks(t, ethservice, 10, commonAncestor, func(parent *types.Block) {})
+	setupBlocks(t, ethservice, 10, commonAncestor, func(parent *types.Header) {}, nil)
 
 	// (1) check LatestValidHash by sending a normal payload (P1'')
-	payload := getNewPayload(t, api, commonAncestor)
+	payload := getNewPayload(t, api, commonAncestor, nil)
 
 	status, err := api.NewPayloadV1(*payload)
 	if err != nil {
@@ -693,7 +698,7 @@ func TestEmptyBlocks(t *testing.T) {
 	}
 
 	// (2) Now send P1' which is invalid
-	payload = getNewPayload(t, api, commonAncestor)
+	payload = getNewPayload(t, api, commonAncestor, nil)
 	payload.GasUsed += 1
 	payload = setBlockhash(payload)
 	// Now latestValidHash should be the common ancestor
@@ -711,7 +716,7 @@ func TestEmptyBlocks(t *testing.T) {
 	}
 
 	// (3) Now send a payload with unknown parent
-	payload = getNewPayload(t, api, commonAncestor)
+	payload = getNewPayload(t, api, commonAncestor, nil)
 	payload.ParentHash = common.Hash{1}
 	payload = setBlockhash(payload)
 	// Now latestValidHash should be the common ancestor
@@ -727,11 +732,12 @@ func TestEmptyBlocks(t *testing.T) {
 	}
 }
 
-func getNewPayload(t *testing.T, api *ConsensusAPI, parent *types.Block) *engine.ExecutableData {
+func getNewPayload(t *testing.T, api *ConsensusAPI, parent *types.Header, withdrawals []*types.Withdrawal) *engine.ExecutableData {
 	params := engine.PayloadAttributes{
-		Timestamp:             parent.Time() + 1,
+		Timestamp:             parent.Time + 1,
 		Random:                crypto.Keccak256Hash([]byte{byte(1)}),
-		SuggestedFeeRecipient: parent.Coinbase(),
+		SuggestedFeeRecipient: parent.Coinbase,
+		Withdrawals:           withdrawals,
 	}
 
 	payload, err := assembleBlock(api, parent.Hash(), &params)
@@ -799,7 +805,7 @@ func TestTrickRemoteBlockCache(t *testing.T) {
 	commonAncestor := ethserviceA.BlockChain().CurrentBlock()
 
 	// Setup 10 blocks on the canonical chain
-	setupBlocks(t, ethserviceA, 10, commonAncestor, func(parent *types.Block) {})
+	setupBlocks(t, ethserviceA, 10, commonAncestor, func(parent *types.Header) {}, nil)
 	commonAncestor = ethserviceA.BlockChain().CurrentBlock()
 
 	var invalidChain []*engine.ExecutableData
@@ -808,7 +814,7 @@ func TestTrickRemoteBlockCache(t *testing.T) {
 	//invalidChain = append(invalidChain, payload1)
 
 	// create an invalid payload2 (P2)
-	payload2 := getNewPayload(t, apiA, commonAncestor)
+	payload2 := getNewPayload(t, apiA, commonAncestor, nil)
 	//payload2.ParentHash = payload1.BlockHash
 	payload2.GasUsed += 1
 	payload2 = setBlockhash(payload2)
@@ -817,7 +823,7 @@ func TestTrickRemoteBlockCache(t *testing.T) {
 	head := payload2
 	// create some valid payloads on top
 	for i := 0; i < 10; i++ {
-		payload := getNewPayload(t, apiA, commonAncestor)
+		payload := getNewPayload(t, apiA, commonAncestor, nil)
 		payload.ParentHash = head.BlockHash
 		payload = setBlockhash(payload)
 		invalidChain = append(invalidChain, payload)
@@ -855,10 +861,10 @@ func TestInvalidBloom(t *testing.T) {
 	api := NewConsensusAPI(ethservice)
 
 	// Setup 10 blocks on the canonical chain
-	setupBlocks(t, ethservice, 10, commonAncestor, func(parent *types.Block) {})
+	setupBlocks(t, ethservice, 10, commonAncestor, func(parent *types.Header) {}, nil)
 
 	// (1) check LatestValidHash by sending a normal payload (P1'')
-	payload := getNewPayload(t, api, commonAncestor)
+	payload := getNewPayload(t, api, commonAncestor, nil)
 	payload.LogsBloom = append(payload.LogsBloom, byte(1))
 	status, err := api.NewPayloadV1(*payload)
 	if err != nil {
@@ -874,7 +880,7 @@ func TestNewPayloadOnInvalidTerminalBlock(t *testing.T) {
 	n, ethservice := startEthService(t, genesis, preMergeBlocks)
 	defer n.Close()
 
-	genesis.Config.TerminalTotalDifficulty = preMergeBlocks[0].Difficulty() //.Sub(genesis.Config.TerminalTotalDifficulty, preMergeBlocks[len(preMergeBlocks)-1].Difficulty())
+	ethservice.BlockChain().Config().TerminalTotalDifficulty = preMergeBlocks[0].Difficulty() //.Sub(genesis.Config.TerminalTotalDifficulty, preMergeBlocks[len(preMergeBlocks)-1].Difficulty())
 
 	var (
 		api    = NewConsensusAPI(ethservice)
@@ -966,7 +972,7 @@ func TestSimultaneousNewBlock(t *testing.T) {
 		if err != nil {
 			t.Fatalf("Failed to convert executable data to block %v", err)
 		}
-		if ethservice.BlockChain().CurrentBlock().NumberU64() != block.NumberU64()-1 {
+		if ethservice.BlockChain().CurrentBlock().Number.Uint64() != block.NumberU64()-1 {
 			t.Fatalf("Chain head shouldn't be updated")
 		}
 		fcState := engine.ForkchoiceStateV1{
@@ -997,7 +1003,7 @@ func TestSimultaneousNewBlock(t *testing.T) {
 				t.Fatal(testErr)
 			}
 		}
-		if have, want := ethservice.BlockChain().CurrentBlock().NumberU64(), block.NumberU64(); have != want {
+		if have, want := ethservice.BlockChain().CurrentBlock().Number.Uint64(), block.NumberU64(); have != want {
 			t.Fatalf("Chain head should be updated, have %d want %d", have, want)
 		}
 		parent = block
@@ -1233,8 +1239,10 @@ func TestNilWithdrawals(t *testing.T) {
 }
 
 func setupBodies(t *testing.T) (*node.Node, *eth.Ethereum, []*types.Block) {
-	genesis, preMergeBlocks := generateMergeChain(10, false)
-	n, ethservice := startEthService(t, genesis, preMergeBlocks)
+	genesis, blocks := generateMergeChain(10, true)
+	n, ethservice := startEthService(t, genesis, blocks)
+	// enable shanghai on the last block
+	ethservice.BlockChain().Config().ShanghaiTime = &blocks[len(blocks)-1].Header().Time
 
 	var (
 		parent = ethservice.BlockChain().CurrentBlock()
@@ -1242,15 +1250,45 @@ func setupBodies(t *testing.T) (*node.Node, *eth.Ethereum, []*types.Block) {
 		logCode = common.Hex2Bytes("60606040525b7f24ec1d3ff24c2f6ff210738839dbc339cd45a5294d85c79361016243157aae7b60405180905060405180910390a15b600a8060416000396000f360606040526008565b00")
 	)
 
-	callback := func(parent *types.Block) {
-		statedb, _ := ethservice.BlockChain().StateAt(parent.Root())
+	callback := func(parent *types.Header) {
+		statedb, _ := ethservice.BlockChain().StateAt(parent.Root)
 		nonce := statedb.GetNonce(testAddr)
 		tx, _ := types.SignTx(types.NewContractCreation(nonce, new(big.Int), 1000000, big.NewInt(2*params.InitialBaseFee), logCode), types.LatestSigner(ethservice.BlockChain().Config()), testKey)
 		ethservice.TxPool().AddLocal(tx)
 	}
 
-	postMergeBlocks := setupBlocks(t, ethservice, 10, parent, callback)
-	return n, ethservice, append(preMergeBlocks, postMergeBlocks...)
+	withdrawals := make([][]*types.Withdrawal, 10)
+	withdrawals[0] = nil // should be filtered out by miner
+	withdrawals[1] = make([]*types.Withdrawal, 0)
+	for i := 2; i < len(withdrawals); i++ {
+		addr := make([]byte, 20)
+		crand.Read(addr)
+		withdrawals[i] = []*types.Withdrawal{
+			{Index: rand.Uint64(), Validator: rand.Uint64(), Amount: rand.Uint64(), Address: common.BytesToAddress(addr)},
+		}
+	}
+
+	postShanghaiHeaders := setupBlocks(t, ethservice, 10, parent, callback, withdrawals)
+	postShanghaiBlocks := make([]*types.Block, len(postShanghaiHeaders))
+	for i, header := range postShanghaiHeaders {
+		postShanghaiBlocks[i] = ethservice.BlockChain().GetBlock(header.Hash(), header.Number.Uint64())
+	}
+	return n, ethservice, append(blocks, postShanghaiBlocks...)
+}
+
+func allHashes(blocks []*types.Block) []common.Hash {
+	var hashes []common.Hash
+	for _, b := range blocks {
+		hashes = append(hashes, b.Hash())
+	}
+	return hashes
+}
+func allBodies(blocks []*types.Block) []*types.Body {
+	var bodies []*types.Body
+	for _, b := range blocks {
+		bodies = append(bodies, b.Body())
+	}
+	return bodies
 }
 
 func TestGetBlockBodiesByHash(t *testing.T) {
@@ -1292,6 +1330,11 @@ func TestGetBlockBodiesByHash(t *testing.T) {
 			results: []*types.Body{blocks[0].Body(), nil, blocks[0].Body(), blocks[0].Body()},
 			hashes:  []common.Hash{blocks[0].Hash(), {1, 2}, blocks[0].Hash(), blocks[0].Hash()},
 		},
+		// all blocks
+		{
+			results: allBodies(blocks),
+			hashes:  allHashes(blocks),
+		},
 	}
 
 	for k, test := range tests {
@@ -1360,6 +1403,12 @@ func TestGetBlockBodiesByRange(t *testing.T) {
 			start:   22,
 			count:   2,
 		},
+		// allBlocks
+		{
+			results: allBodies(blocks),
+			start:   1,
+			count:   hexutil.Uint64(len(blocks)),
+		},
 	}
 
 	for k, test := range tests {
@@ -1430,15 +1479,14 @@ func equalBody(a *types.Body, b *engine.ExecutionPayloadBodyV1) bool {
 	} else if a == nil || b == nil {
 		return false
 	}
-	var want []hexutil.Bytes
-	for _, tx := range a.Transactions {
-		data, _ := tx.MarshalBinary()
-		want = append(want, hexutil.Bytes(data))
-	}
-	aBytes, errA := rlp.EncodeToBytes(want)
-	bBytes, errB := rlp.EncodeToBytes(b.TransactionData)
-	if errA != errB {
+	if len(a.Transactions) != len(b.TransactionData) {
 		return false
 	}
-	return bytes.Equal(aBytes, bBytes)
+	for i, tx := range a.Transactions {
+		data, _ := tx.MarshalBinary()
+		if !bytes.Equal(data, b.TransactionData[i]) {
+			return false
+		}
+	}
+	return reflect.DeepEqual(a.Withdrawals, b.Withdrawals)
 }

eth/catalyst/queue.go

@@ -31,9 +31,12 @@ import (
 const maxTrackedPayloads = 10
 
 // maxTrackedHeaders is the maximum number of executed payloads the execution
-// engine tracks before evicting old ones. Ideally we should only ever track the
-// latest one; but have a slight wiggle room for non-ideal conditions.
-const maxTrackedHeaders = 10
+// engine tracks before evicting old ones. These are tracked outside the chain
+// during initial sync to allow ForkchoiceUpdate to reference past blocks via
+// hashes only. For the sync target it would be enough to track only the latest
+// header, but snap sync also needs the latest finalized height for the ancient
+// limit.
+const maxTrackedHeaders = 96
 
 // payloadQueueItem represents an id->payload tuple to store until it's retrieved
 // or evicted.

eth/catalyst/tester.go

@@ -75,7 +75,7 @@ func (tester *FullSyncTester) Start() error {
 				}
 				// Trigger beacon sync with the provided block header as
 				// trusted chain head.
-				err := tester.api.eth.Downloader().BeaconSync(downloader.FullSync, tester.block.Header())
+				err := tester.api.eth.Downloader().BeaconSync(downloader.FullSync, tester.block.Header(), nil)
 				if err != nil {
 					log.Info("Failed to beacon sync", "err", err)
 				}

eth/downloader/beaconsync.go

@@ -76,7 +76,7 @@ func (b *beaconBackfiller) suspend() *types.Header {
 
 	// Sync cycle was just terminated, retrieve and return the last filled header.
 	// Can't use `filled` as that contains a stale value from before cancellation.
-	return b.downloader.blockchain.CurrentFastBlock().Header()
+	return b.downloader.blockchain.CurrentSnapBlock()
 }
 
 // resume starts the downloader threads for backfilling state and chain data.
@@ -101,7 +101,7 @@ func (b *beaconBackfiller) resume() {
 		defer func() {
 			b.lock.Lock()
 			b.filling = false
-			b.filled = b.downloader.blockchain.CurrentFastBlock().Header()
+			b.filled = b.downloader.blockchain.CurrentSnapBlock()
 			b.lock.Unlock()
 		}()
 		// If the downloader fails, report an error as in beacon chain mode there
@@ -151,8 +151,8 @@ func (d *Downloader) SetBadBlockCallback(onBadBlock badBlockFn) {
 //
 // Internally backfilling and state sync is done the same way, but the header
 // retrieval and scheduling is replaced.
-func (d *Downloader) BeaconSync(mode SyncMode, head *types.Header) error {
-	return d.beaconSync(mode, head, true)
+func (d *Downloader) BeaconSync(mode SyncMode, head *types.Header, final *types.Header) error {
+	return d.beaconSync(mode, head, final, true)
 }
 
 // BeaconExtend is an optimistic version of BeaconSync, where an attempt is made
@@ -162,7 +162,7 @@ func (d *Downloader) BeaconSync(mode SyncMode, head *types.Header) error {
 // This is useful if a beacon client is feeding us large chunks of payloads to run,
 // but is not setting the head after each.
 func (d *Downloader) BeaconExtend(mode SyncMode, head *types.Header) error {
-	return d.beaconSync(mode, head, false)
+	return d.beaconSync(mode, head, nil, false)
 }
 
 // beaconSync is the post-merge version of the chain synchronization, where the
@@ -171,7 +171,7 @@ func (d *Downloader) BeaconExtend(mode SyncMode, head *types.Header) error {
 //
 // Internally backfilling and state sync is done the same way, but the header
 // retrieval and scheduling is replaced.
-func (d *Downloader) beaconSync(mode SyncMode, head *types.Header, force bool) error {
+func (d *Downloader) beaconSync(mode SyncMode, head *types.Header, final *types.Header, force bool) error {
 	// When the downloader starts a sync cycle, it needs to be aware of the sync
 	// mode to use (full, snap). To keep the skeleton chain oblivious, inject the
 	// mode into the backfiller directly.
@@ -181,7 +181,7 @@ func (d *Downloader) beaconSync(mode SyncMode, head *types.Header, force bool) e
 	d.skeleton.filler.(*beaconBackfiller).setMode(mode)
 
 	// Signal the skeleton sync to switch to a new head, however it wants
-	if err := d.skeleton.Sync(head, force); err != nil {
+	if err := d.skeleton.Sync(head, final, force); err != nil {
 		return err
 	}
 	return nil
@@ -198,16 +198,16 @@ func (d *Downloader) findBeaconAncestor() (uint64, error) {
 
 	switch d.getMode() {
 	case FullSync:
-		chainHead = d.blockchain.CurrentBlock().Header()
+		chainHead = d.blockchain.CurrentBlock()
 	case SnapSync:
-		chainHead = d.blockchain.CurrentFastBlock().Header()
+		chainHead = d.blockchain.CurrentSnapBlock()
 	default:
 		chainHead = d.lightchain.CurrentHeader()
 	}
 	number := chainHead.Number.Uint64()
 
 	// Retrieve the skeleton bounds and ensure they are linked to the local chain
-	beaconHead, beaconTail, err := d.skeleton.Bounds()
+	beaconHead, beaconTail, _, err := d.skeleton.Bounds()
 	if err != nil {
 		// This is a programming error. The chain backfiller was called with an
 		// invalid beacon sync state. Ideally we would panic here, but erroring
@@ -272,7 +272,7 @@ func (d *Downloader) findBeaconAncestor() (uint64, error) {
 // until sync errors or is finished.
 func (d *Downloader) fetchBeaconHeaders(from uint64) error {
 	var head *types.Header
-	_, tail, err := d.skeleton.Bounds()
+	_, tail, _, err := d.skeleton.Bounds()
 	if err != nil {
 		return err
 	}
@@ -292,7 +292,7 @@ func (d *Downloader) fetchBeaconHeaders(from uint64) error {
 	for {
 		// Some beacon headers might have appeared since the last cycle, make
 		// sure we're always syncing to all available ones
-		head, _, err = d.skeleton.Bounds()
+		head, _, _, err = d.skeleton.Bounds()
 		if err != nil {
 			return err
 		}

eth/downloader/downloader.go

@@ -196,10 +196,10 @@ type BlockChain interface {
 	GetBlockByHash(common.Hash) *types.Block
 
 	// CurrentBlock retrieves the head block from the local chain.
-	CurrentBlock() *types.Block
+	CurrentBlock() *types.Header
 
-	// CurrentFastBlock retrieves the head snap block from the local chain.
-	CurrentFastBlock() *types.Block
+	// CurrentSnapBlock retrieves the head snap block from the local chain.
+	CurrentSnapBlock() *types.Header
 
 	// SnapSyncCommitHead directly commits the head block to a certain entity.
 	SnapSyncCommitHead(common.Hash) error
@@ -236,7 +236,7 @@ func New(checkpoint uint64, stateDb ethdb.Database, mux *event.TypeMux, chain Bl
 		quitCh:         make(chan struct{}),
 		SnapSyncer:     snap.NewSyncer(stateDb, chain.TrieDB().Scheme()),
 		stateSyncStart: make(chan *stateSync),
-		syncStartBlock: chain.CurrentFastBlock().NumberU64(),
+		syncStartBlock: chain.CurrentSnapBlock().Number.Uint64(),
 	}
 	// Create the post-merge skeleton syncer and start the process
 	dl.skeleton = newSkeleton(stateDb, dl.peers, dropPeer, newBeaconBackfiller(dl, success))
@@ -261,9 +261,9 @@ func (d *Downloader) Progress() ethereum.SyncProgress {
 	mode := d.getMode()
 	switch {
 	case d.blockchain != nil && mode == FullSync:
-		current = d.blockchain.CurrentBlock().NumberU64()
+		current = d.blockchain.CurrentBlock().Number.Uint64()
 	case d.blockchain != nil && mode == SnapSync:
-		current = d.blockchain.CurrentFastBlock().NumberU64()
+		current = d.blockchain.CurrentSnapBlock().Number.Uint64()
 	case d.lightchain != nil:
 		current = d.lightchain.CurrentHeader().Number.Uint64()
 	default:
@@ -480,7 +480,7 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, td, ttd *
 	}(time.Now())
 
 	// Look up the sync boundaries: the common ancestor and the target block
-	var latest, pivot *types.Header
+	var latest, pivot, final *types.Header
 	if !beaconMode {
 		// In legacy mode, use the master peer to retrieve the headers from
 		latest, pivot, err = d.fetchHead(p)
@@ -489,7 +489,7 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, td, ttd *
 		}
 	} else {
 		// In beacon mode, use the skeleton chain to retrieve the headers from
-		latest, _, err = d.skeleton.Bounds()
+		latest, _, final, err = d.skeleton.Bounds()
 		if err != nil {
 			return err
 		}
@@ -499,7 +499,7 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, td, ttd *
 			// Retrieve the pivot header from the skeleton chain segment but
 			// fallback to local chain if it's not found in skeleton space.
 			if pivot = d.skeleton.Header(number); pivot == nil {
-				_, oldest, _ := d.skeleton.Bounds() // error is already checked
+				_, oldest, _, _ := d.skeleton.Bounds() // error is already checked
 				if number < oldest.Number.Uint64() {
 					count := int(oldest.Number.Uint64() - number) // it's capped by fsMinFullBlocks
 					headers := d.readHeaderRange(oldest, count)
@@ -523,7 +523,7 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, td, ttd *
 	// anyway, but still need a valid pivot block to avoid some code hitting
 	// nil panics on access.
 	if mode == SnapSync && pivot == nil {
-		pivot = d.blockchain.CurrentBlock().Header()
+		pivot = d.blockchain.CurrentBlock()
 	}
 	height := latest.Number.Uint64()
 
@@ -567,26 +567,41 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, td, ttd *
 		d.committed = 0
 	}
 	if mode == SnapSync {
-		// Set the ancient data limitation.
-		// If we are running snap sync, all block data older than ancientLimit will be
-		// written to the ancient store. More recent data will be written to the active
-		// database and will wait for the freezer to migrate.
+		// Set the ancient data limitation. If we are running snap sync, all block
+		// data older than ancientLimit will be written to the ancient store. More
+		// recent data will be written to the active database and will wait for the
+		// freezer to migrate.
 		//
-		// If there is a checkpoint available, then calculate the ancientLimit through
-		// that. Otherwise calculate the ancient limit through the advertised height
-		// of the remote peer.
+		// If the network is post-merge, use either the last announced finalized
+		// block as the ancient limit, or if we haven't yet received one, the head-
+		// a max fork ancestry limit. One quirky case if we've already passed the
+		// finalized block, in which case the skeleton.Bounds will return nil and
+		// we'll revert to head - 90K. That's fine, we're finishing sync anyway.
 		//
-		// The reason for picking checkpoint first is that a malicious peer can give us
-		// a fake (very high) height, forcing the ancient limit to also be very high.
-		// The peer would start to feed us valid blocks until head, resulting in all of
-		// the blocks might be written into the ancient store. A following mini-reorg
-		// could cause issues.
-		if d.checkpoint != 0 && d.checkpoint > fullMaxForkAncestry+1 {
-			d.ancientLimit = d.checkpoint
-		} else if height > fullMaxForkAncestry+1 {
-			d.ancientLimit = height - fullMaxForkAncestry - 1
+		// For non-merged networks, if there is a checkpoint available, then calculate
+		// the ancientLimit through that. Otherwise calculate the ancient limit through
+		// the advertised height of the remote peer. This most is mostly a fallback for
+		// legacy networks, but should eventually be droppped. TODO(karalabe).
+		if beaconMode {
+			// Beacon sync, use the latest finalized block as the ancient limit
+			// or a reasonable height if no finalized block is yet announced.
+			if final != nil {
+				d.ancientLimit = final.Number.Uint64()
+			} else if height > fullMaxForkAncestry+1 {
+				d.ancientLimit = height - fullMaxForkAncestry - 1
+			} else {
+				d.ancientLimit = 0
+			}
 		} else {
-			d.ancientLimit = 0
+			// Legacy sync, use any hardcoded checkpoints or the best announcement
+			// we have from the remote peer. TODO(karalabe): Drop this pathway.
+			if d.checkpoint != 0 && d.checkpoint > fullMaxForkAncestry+1 {
+				d.ancientLimit = d.checkpoint
+			} else if height > fullMaxForkAncestry+1 {
+				d.ancientLimit = height - fullMaxForkAncestry - 1
+			} else {
+				d.ancientLimit = 0
+			}
 		}
 		frozen, _ := d.stateDB.Ancients() // Ignore the error here since light client can also hit here.
 
@@ -819,9 +834,9 @@ func (d *Downloader) findAncestor(p *peerConnection, remoteHeader *types.Header)
 	mode := d.getMode()
 	switch mode {
 	case FullSync:
-		localHeight = d.blockchain.CurrentBlock().NumberU64()
+		localHeight = d.blockchain.CurrentBlock().Number.Uint64()
 	case SnapSync:
-		localHeight = d.blockchain.CurrentFastBlock().NumberU64()
+		localHeight = d.blockchain.CurrentSnapBlock().Number.Uint64()
 	default:
 		localHeight = d.lightchain.CurrentHeader().Number.Uint64()
 	}
@@ -1159,8 +1174,8 @@ func (d *Downloader) fetchHeaders(p *peerConnection, from uint64, head uint64) e
 				if mode == LightSync {
 					head = d.lightchain.CurrentHeader().Number.Uint64()
 				} else {
-					head = d.blockchain.CurrentFastBlock().NumberU64()
-					if full := d.blockchain.CurrentBlock().NumberU64(); head < full {
+					head = d.blockchain.CurrentSnapBlock().Number.Uint64()
+					if full := d.blockchain.CurrentBlock().Number.Uint64(); head < full {
 						head = full
 					}
 				}
@@ -1274,8 +1289,8 @@ func (d *Downloader) processHeaders(origin uint64, td, ttd *big.Int, beaconMode
 		if rollback > 0 {
 			lastHeader, lastFastBlock, lastBlock := d.lightchain.CurrentHeader().Number, common.Big0, common.Big0
 			if mode != LightSync {
-				lastFastBlock = d.blockchain.CurrentFastBlock().Number()
-				lastBlock = d.blockchain.CurrentBlock().Number()
+				lastFastBlock = d.blockchain.CurrentSnapBlock().Number
+				lastBlock = d.blockchain.CurrentBlock().Number
 			}
 			if err := d.lightchain.SetHead(rollback - 1); err != nil { // -1 to target the parent of the first uncertain block
 				// We're already unwinding the stack, only print the error to make it more visible
@@ -1283,8 +1298,8 @@ func (d *Downloader) processHeaders(origin uint64, td, ttd *big.Int, beaconMode
 			}
 			curFastBlock, curBlock := common.Big0, common.Big0
 			if mode != LightSync {
-				curFastBlock = d.blockchain.CurrentFastBlock().Number()
-				curBlock = d.blockchain.CurrentBlock().Number()
+				curFastBlock = d.blockchain.CurrentSnapBlock().Number
+				curBlock = d.blockchain.CurrentBlock().Number
 			}
 			log.Warn("Rolled back chain segment",
 				"header", fmt.Sprintf("%d->%d", lastHeader, d.lightchain.CurrentHeader().Number),
@@ -1329,7 +1344,7 @@ func (d *Downloader) processHeaders(origin uint64, td, ttd *big.Int, beaconMode
 					// R: Nothing to give
 					if mode != LightSync {
 						head := d.blockchain.CurrentBlock()
-						if !gotHeaders && td.Cmp(d.blockchain.GetTd(head.Hash(), head.NumberU64())) > 0 {
+						if !gotHeaders && td.Cmp(d.blockchain.GetTd(head.Hash(), head.Number.Uint64())) > 0 {
 							return errStallingPeer
 						}
 					}
@@ -1566,7 +1581,7 @@ func (d *Downloader) importBlockResults(results []*fetchResult) error {
 
 			// In post-merge, notify the engine API of encountered bad chains
 			if d.badBlock != nil {
-				head, _, err := d.skeleton.Bounds()
+				head, _, _, err := d.skeleton.Bounds()
 				if err != nil {
 					log.Error("Failed to retrieve beacon bounds for bad block reporting", "err", err)
 				} else {
@@ -1853,14 +1868,14 @@ func (d *Downloader) reportSnapSyncProgress(force bool) {
 	}
 	var (
 		header = d.blockchain.CurrentHeader()
-		block  = d.blockchain.CurrentFastBlock()
+		block  = d.blockchain.CurrentSnapBlock()
 	)
-	syncedBlocks := block.NumberU64() - d.syncStartBlock
+	syncedBlocks := block.Number.Uint64() - d.syncStartBlock
 	if syncedBlocks == 0 {
 		return
 	}
 	// Retrieve the current chain head and calculate the ETA
-	latest, _, err := d.skeleton.Bounds()
+	latest, _, _, err := d.skeleton.Bounds()
 	if err != nil {
 		// We're going to cheat for non-merged networks, but that's fine
 		latest = d.pivotHeader
@@ -1872,13 +1887,13 @@ func (d *Downloader) reportSnapSyncProgress(force bool) {
 		return
 	}
 	var (
-		left = latest.Number.Uint64() - block.NumberU64()
+		left = latest.Number.Uint64() - block.Number.Uint64()
 		eta  = time.Since(d.syncStartTime) / time.Duration(syncedBlocks) * time.Duration(left)
 
-		progress = fmt.Sprintf("%.2f%%", float64(block.NumberU64())*100/float64(latest.Number.Uint64()))
+		progress = fmt.Sprintf("%.2f%%", float64(block.Number.Uint64())*100/float64(latest.Number.Uint64()))
 		headers  = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(header.Number.Uint64()), common.StorageSize(headerBytes).TerminalString())
-		bodies   = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(block.NumberU64()), common.StorageSize(bodyBytes).TerminalString())
-		receipts = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(block.NumberU64()), common.StorageSize(receiptBytes).TerminalString())
+		bodies   = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(block.Number.Uint64()), common.StorageSize(bodyBytes).TerminalString())
+		receipts = fmt.Sprintf("%v@%v", log.FormatLogfmtUint64(block.Number.Uint64()), common.StorageSize(receiptBytes).TerminalString())
 	)
 	log.Info("Syncing: chain download in progress", "synced", progress, "chain", syncedBytes, "headers", headers, "bodies", bodies, "receipts", receipts, "eta", common.PrettyDuration(eta))
 	d.syncLogTime = time.Now()

eth/downloader/downloader_test.go

@@ -100,7 +100,7 @@ func (dl *downloadTester) sync(id string, td *big.Int, mode SyncMode) error {
 	head := dl.peers[id].chain.CurrentBlock()
 	if td == nil {
 		// If no particular TD was requested, load from the peer's blockchain
-		td = dl.peers[id].chain.GetTd(head.Hash(), head.NumberU64())
+		td = dl.peers[id].chain.GetTd(head.Hash(), head.Number.Uint64())
 	}
 	// Synchronise with the chosen peer and ensure proper cleanup afterwards
 	err := dl.downloader.synchronise(id, head.Hash(), td, nil, mode, false, nil)
@@ -158,7 +158,7 @@ type downloadTesterPeer struct {
 // and total difficulty.
 func (dlp *downloadTesterPeer) Head() (common.Hash, *big.Int) {
 	head := dlp.chain.CurrentBlock()
-	return head.Hash(), dlp.chain.GetTd(head.Hash(), head.NumberU64())
+	return head.Hash(), dlp.chain.GetTd(head.Hash(), head.Number.Uint64())
 }
 
 func unmarshalRlpHeaders(rlpdata []rlp.RawValue) []*types.Header {
@@ -430,10 +430,10 @@ func assertOwnChain(t *testing.T, tester *downloadTester, length int) {
 	if hs := int(tester.chain.CurrentHeader().Number.Uint64()) + 1; hs != headers {
 		t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, headers)
 	}
-	if bs := int(tester.chain.CurrentBlock().NumberU64()) + 1; bs != blocks {
+	if bs := int(tester.chain.CurrentBlock().Number.Uint64()) + 1; bs != blocks {
 		t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, blocks)
 	}
-	if rs := int(tester.chain.CurrentFastBlock().NumberU64()) + 1; rs != receipts {
+	if rs := int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1; rs != receipts {
 		t.Fatalf("synchronised receipts mismatch: have %v, want %v", rs, receipts)
 	}
 }
@@ -490,7 +490,7 @@ func testThrottling(t *testing.T, protocol uint, mode SyncMode) {
 	for {
 		// Check the retrieval count synchronously (! reason for this ugly block)
 		tester.lock.RLock()
-		retrieved := int(tester.chain.CurrentFastBlock().Number().Uint64()) + 1
+		retrieved := int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1
 		tester.lock.RUnlock()
 		if retrieved >= targetBlocks+1 {
 			break
@@ -506,7 +506,7 @@ func testThrottling(t *testing.T, protocol uint, mode SyncMode) {
 			{
 				cached = tester.downloader.queue.resultCache.countCompleted()
 				frozen = int(atomic.LoadUint32(&blocked))
-				retrieved = int(tester.chain.CurrentFastBlock().Number().Uint64()) + 1
+				retrieved = int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1
 			}
 			tester.downloader.queue.resultCache.lock.Unlock()
 			tester.downloader.queue.lock.Unlock()
@@ -522,7 +522,7 @@ func testThrottling(t *testing.T, protocol uint, mode SyncMode) {
 		// Make sure we filled up the cache, then exhaust it
 		time.Sleep(25 * time.Millisecond) // give it a chance to screw up
 		tester.lock.RLock()
-		retrieved = int(tester.chain.CurrentFastBlock().Number().Uint64()) + 1
+		retrieved = int(tester.chain.CurrentSnapBlock().Number.Uint64()) + 1
 		tester.lock.RUnlock()
 		if cached != blockCacheMaxItems && cached != blockCacheMaxItems-reorgProtHeaderDelay && retrieved+cached+frozen != targetBlocks+1 && retrieved+cached+frozen != targetBlocks+1-reorgProtHeaderDelay {
 			t.Fatalf("block count mismatch: have %v, want %v (owned %v, blocked %v, target %v)", cached, blockCacheMaxItems, retrieved, frozen, targetBlocks+1)
@@ -921,7 +921,7 @@ func testInvalidHeaderRollback(t *testing.T, protocol uint, mode SyncMode) {
 		t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
 	}
 	if mode == SnapSync {
-		if head := tester.chain.CurrentBlock().NumberU64(); head != 0 {
+		if head := tester.chain.CurrentBlock().Number.Uint64(); head != 0 {
 			t.Errorf("fast sync pivot block #%d not rolled back", head)
 		}
 	}
@@ -943,7 +943,7 @@ func testInvalidHeaderRollback(t *testing.T, protocol uint, mode SyncMode) {
 		t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
 	}
 	if mode == SnapSync {
-		if head := tester.chain.CurrentBlock().NumberU64(); head != 0 {
+		if head := tester.chain.CurrentBlock().Number.Uint64(); head != 0 {
 			t.Errorf("fast sync pivot block #%d not rolled back", head)
 		}
 	}
@@ -1478,13 +1478,13 @@ func testBeaconSync(t *testing.T, protocol uint, mode SyncMode) {
 			if c.local > 0 {
 				tester.chain.InsertChain(chain.blocks[1 : c.local+1])
 			}
-			if err := tester.downloader.BeaconSync(mode, chain.blocks[len(chain.blocks)-1].Header()); err != nil {
+			if err := tester.downloader.BeaconSync(mode, chain.blocks[len(chain.blocks)-1].Header(), nil); err != nil {
 				t.Fatalf("Failed to beacon sync chain %v %v", c.name, err)
 			}
 			select {
 			case <-success:
 				// Ok, downloader fully cancelled after sync cycle
-				if bs := int(tester.chain.CurrentBlock().NumberU64()) + 1; bs != len(chain.blocks) {
+				if bs := int(tester.chain.CurrentBlock().Number.Uint64()) + 1; bs != len(chain.blocks) {
 					t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, len(chain.blocks))
 				}
 			case <-time.NewTimer(time.Second * 3).C:

eth/downloader/skeleton.go

@@ -102,6 +102,7 @@ type subchain struct {
 // suspended skeleton sync without prior knowledge of all prior suspension points.
 type skeletonProgress struct {
 	Subchains []*subchain // Disjoint subchains downloaded until now
+	Finalized *uint64     // Last known finalized block number
 }
 
 // headUpdate is a notification that the beacon sync should switch to a new target.
@@ -109,6 +110,7 @@ type skeletonProgress struct {
 // extend it and fail if it's not possible.
 type headUpdate struct {
 	header *types.Header // Header to update the sync target to
+	final  *types.Header // Finalized header to use as thresholds
 	force  bool          // Whether to force the update or only extend if possible
 	errc   chan error    // Channel to signal acceptance of the new head
 }
@@ -321,12 +323,12 @@ func (s *skeleton) Terminate() error {
 //
 // This method does not block, rather it just waits until the syncer receives the
 // fed header. What the syncer does with it is the syncer's problem.
-func (s *skeleton) Sync(head *types.Header, force bool) error {
+func (s *skeleton) Sync(head *types.Header, final *types.Header, force bool) error {
 	log.Trace("New skeleton head announced", "number", head.Number, "hash", head.Hash(), "force", force)
 	errc := make(chan error)
 
 	select {
-	case s.headEvents <- &headUpdate{header: head, force: force, errc: errc}:
+	case s.headEvents <- &headUpdate{header: head, final: final, force: force, errc: errc}:
 		return <-errc
 	case <-s.terminated:
 		return errTerminated
@@ -437,7 +439,7 @@ func (s *skeleton) sync(head *types.Header) (*types.Header, error) {
 			// we don't seamlessly integrate reorgs to keep things simple. If the
 			// network starts doing many mini reorgs, it might be worthwhile handling
 			// a limited depth without an error.
-			if reorged := s.processNewHead(event.header, event.force); reorged {
+			if reorged := s.processNewHead(event.header, event.final, event.force); reorged {
 				// If a reorg is needed, and we're forcing the new head, signal
 				// the syncer to tear down and start over. Otherwise, drop the
 				// non-force reorg.
@@ -590,7 +592,17 @@ func (s *skeleton) saveSyncStatus(db ethdb.KeyValueWriter) {
 // accepts and integrates it into the skeleton or requests a reorg. Upon reorg,
 // the syncer will tear itself down and restart with a fresh head. It is simpler
 // to reconstruct the sync state than to mutate it and hope for the best.
-func (s *skeleton) processNewHead(head *types.Header, force bool) bool {
+func (s *skeleton) processNewHead(head *types.Header, final *types.Header, force bool) bool {
+	// If a new finalized block was announced, update the sync process independent
+	// of what happens with the sync head below
+	if final != nil {
+		if number := final.Number.Uint64(); s.progress.Finalized == nil || *s.progress.Finalized != number {
+			s.progress.Finalized = new(uint64)
+			*s.progress.Finalized = final.Number.Uint64()
+
+			s.saveSyncStatus(s.db)
+		}
+	}
 	// If the header cannot be inserted without interruption, return an error for
 	// the outer loop to tear down the skeleton sync and restart it
 	number := head.Number.Uint64()
@@ -1150,9 +1162,10 @@ func (s *skeleton) cleanStales(filled *types.Header) error {
 	return nil
 }
 
-// Bounds retrieves the current head and tail tracked by the skeleton syncer.
-// This method is used by the backfiller, whose life cycle is controlled by the
-// skeleton syncer.
+// Bounds retrieves the current head and tail tracked by the skeleton syncer
+// and optionally the last known finalized header if any was announced and if
+// it is still in the sync range. This method is used by the backfiller, whose
+// life cycle is controlled by the skeleton syncer.
 //
 // Note, the method will not use the internal state of the skeleton, but will
 // rather blindly pull stuff from the database. This is fine, because the back-
@@ -1160,28 +1173,34 @@ func (s *skeleton) cleanStales(filled *types.Header) error {
 // There might be new heads appended, but those are atomic from the perspective
 // of this method. Any head reorg will first tear down the backfiller and only
 // then make the modification.
-func (s *skeleton) Bounds() (head *types.Header, tail *types.Header, err error) {
+func (s *skeleton) Bounds() (head *types.Header, tail *types.Header, final *types.Header, err error) {
 	// Read the current sync progress from disk and figure out the current head.
 	// Although there's a lot of error handling here, these are mostly as sanity
 	// checks to avoid crashing if a programming error happens. These should not
 	// happen in live code.
 	status := rawdb.ReadSkeletonSyncStatus(s.db)
 	if len(status) == 0 {
-		return nil, nil, errors.New("beacon sync not yet started")
+		return nil, nil, nil, errors.New("beacon sync not yet started")
 	}
 	progress := new(skeletonProgress)
 	if err := json.Unmarshal(status, progress); err != nil {
-		return nil, nil, err
+		return nil, nil, nil, err
 	}
 	head = rawdb.ReadSkeletonHeader(s.db, progress.Subchains[0].Head)
 	if head == nil {
-		return nil, nil, fmt.Errorf("head skeleton header %d is missing", progress.Subchains[0].Head)
+		return nil, nil, nil, fmt.Errorf("head skeleton header %d is missing", progress.Subchains[0].Head)
 	}
 	tail = rawdb.ReadSkeletonHeader(s.db, progress.Subchains[0].Tail)
 	if tail == nil {
-		return nil, nil, fmt.Errorf("tail skeleton header %d is missing", progress.Subchains[0].Tail)
+		return nil, nil, nil, fmt.Errorf("tail skeleton header %d is missing", progress.Subchains[0].Tail)
 	}
-	return head, tail, nil
+	if progress.Finalized != nil && tail.Number.Uint64() <= *progress.Finalized && *progress.Finalized <= head.Number.Uint64() {
+		final = rawdb.ReadSkeletonHeader(s.db, *progress.Finalized)
+		if final == nil {
+			return nil, nil, nil, fmt.Errorf("finalized skeleton header %d is missing", *progress.Finalized)
+		}
+	}
+	return head, tail, final, nil
 }
 
 // Header retrieves a specific header tracked by the skeleton syncer. This method

eth/downloader/skeleton_test.go

@@ -370,7 +370,7 @@ func TestSkeletonSyncInit(t *testing.T) {
 
 		skeleton := newSkeleton(db, newPeerSet(), nil, newHookedBackfiller())
 		skeleton.syncStarting = func() { close(wait) }
-		skeleton.Sync(tt.head, true)
+		skeleton.Sync(tt.head, nil, true)
 
 		<-wait
 		skeleton.Terminate()
@@ -484,10 +484,10 @@ func TestSkeletonSyncExtend(t *testing.T) {
 
 		skeleton := newSkeleton(db, newPeerSet(), nil, newHookedBackfiller())
 		skeleton.syncStarting = func() { close(wait) }
-		skeleton.Sync(tt.head, true)
+		skeleton.Sync(tt.head, nil, true)
 
 		<-wait
-		if err := skeleton.Sync(tt.extend, false); err != tt.err {
+		if err := skeleton.Sync(tt.extend, nil, false); err != tt.err {
 			t.Errorf("test %d: extension failure mismatch: have %v, want %v", i, err, tt.err)
 		}
 		skeleton.Terminate()
@@ -859,7 +859,7 @@ func TestSkeletonSyncRetrievals(t *testing.T) {
 		}
 		// Create a skeleton sync and run a cycle
 		skeleton := newSkeleton(db, peerset, drop, filler)
-		skeleton.Sync(tt.head, true)
+		skeleton.Sync(tt.head, nil, true)
 
 		var progress skeletonProgress
 		// Wait a bit (bleah) for the initial sync loop to go to idle. This might
@@ -910,7 +910,7 @@ func TestSkeletonSyncRetrievals(t *testing.T) {
 		}
 		// Apply the post-init events if there's any
 		if tt.newHead != nil {
-			skeleton.Sync(tt.newHead, true)
+			skeleton.Sync(tt.newHead, nil, true)
 		}
 		if tt.newPeer != nil {
 			if err := peerset.Register(newPeerConnection(tt.newPeer.id, eth.ETH66, tt.newPeer, log.New("id", tt.newPeer.id))); err != nil {

eth/gasprice/gasprice_test.go

@@ -49,10 +49,10 @@ func (b *testBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber
 		number = 0
 	}
 	if number == rpc.FinalizedBlockNumber {
-		return b.chain.CurrentFinalizedBlock().Header(), nil
+		return b.chain.CurrentFinalBlock(), nil
 	}
 	if number == rpc.SafeBlockNumber {
-		return b.chain.CurrentSafeBlock().Header(), nil
+		return b.chain.CurrentSafeBlock(), nil
 	}
 	if number == rpc.LatestBlockNumber {
 		number = testHead
@@ -75,10 +75,10 @@ func (b *testBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber)
 		number = 0
 	}
 	if number == rpc.FinalizedBlockNumber {
-		return b.chain.CurrentFinalizedBlock(), nil
+		number = rpc.BlockNumber(b.chain.CurrentFinalBlock().Number.Uint64())
 	}
 	if number == rpc.SafeBlockNumber {
-		return b.chain.CurrentSafeBlock(), nil
+		number = rpc.BlockNumber(b.chain.CurrentSafeBlock().Number.Uint64())
 	}
 	if number == rpc.LatestBlockNumber {
 		number = testHead
@@ -169,8 +169,8 @@ func newTestBackend(t *testing.T, londonBlock *big.Int, pending bool) *testBacke
 		t.Fatalf("Failed to create local chain, %v", err)
 	}
 	chain.InsertChain(blocks)
-	chain.SetFinalized(chain.GetBlockByNumber(25))
-	chain.SetSafe(chain.GetBlockByNumber(25))
+	chain.SetFinalized(chain.GetBlockByNumber(25).Header())
+	chain.SetSafe(chain.GetBlockByNumber(25).Header())
 	return &testBackend{chain: chain, pending: pending}
 }
 

eth/handler.go

@@ -152,13 +152,13 @@ func newHandler(config *handlerConfig) (*handler, error) {
 		// * the last snap sync is not finished while user specifies a full sync this
 		//   time. But we don't have any recent state for full sync.
 		// In these cases however it's safe to reenable snap sync.
-		fullBlock, fastBlock := h.chain.CurrentBlock(), h.chain.CurrentFastBlock()
-		if fullBlock.NumberU64() == 0 && fastBlock.NumberU64() > 0 {
+		fullBlock, snapBlock := h.chain.CurrentBlock(), h.chain.CurrentSnapBlock()
+		if fullBlock.Number.Uint64() == 0 && snapBlock.Number.Uint64() > 0 {
 			h.snapSync = uint32(1)
 			log.Warn("Switch sync mode from full sync to snap sync")
 		}
 	} else {
-		if h.chain.CurrentBlock().NumberU64() > 0 {
+		if h.chain.CurrentBlock().Number.Uint64() > 0 {
 			// Print warning log if database is not empty to run snap sync.
 			log.Warn("Switch sync mode from snap sync to full sync")
 		} else {
@@ -183,10 +183,10 @@ func newHandler(config *handlerConfig) (*handler, error) {
 		// If we've successfully finished a sync cycle and passed any required
 		// checkpoint, enable accepting transactions from the network
 		head := h.chain.CurrentBlock()
-		if head.NumberU64() >= h.checkpointNumber {
+		if head.Number.Uint64() >= h.checkpointNumber {
 			// Checkpoint passed, sanity check the timestamp to have a fallback mechanism
 			// for non-checkpointed (number = 0) private networks.
-			if head.Time() >= uint64(time.Now().AddDate(0, -1, 0).Unix()) {
+			if head.Time >= uint64(time.Now().AddDate(0, -1, 0).Unix()) {
 				atomic.StoreUint32(&h.acceptTxs, 1)
 			}
 		}
@@ -198,7 +198,7 @@ func newHandler(config *handlerConfig) (*handler, error) {
 			log.Info("Chain post-merge, sync via beacon client")
 		} else {
 			head := h.chain.CurrentBlock()
-			if td := h.chain.GetTd(head.Hash(), head.NumberU64()); td.Cmp(ttd) >= 0 {
+			if td := h.chain.GetTd(head.Hash(), head.Number.Uint64()); td.Cmp(ttd) >= 0 {
 				log.Info("Chain post-TTD, sync via beacon client")
 			} else {
 				log.Warn("Chain pre-merge, sync via PoW (ensure beacon client is ready)")
@@ -227,7 +227,7 @@ func newHandler(config *handlerConfig) (*handler, error) {
 		return h.chain.Engine().VerifyHeader(h.chain, header, true)
 	}
 	heighter := func() uint64 {
-		return h.chain.CurrentBlock().NumberU64()
+		return h.chain.CurrentBlock().Number.Uint64()
 	}
 	inserter := func(blocks types.Blocks) (int, error) {
 		// All the block fetcher activities should be disabled
@@ -250,7 +250,7 @@ func newHandler(config *handlerConfig) (*handler, error) {
 		// the propagated block if the head is too old. Unfortunately there is a corner
 		// case when starting new networks, where the genesis might be ancient (0 unix)
 		// which would prevent full nodes from accepting it.
-		if h.chain.CurrentBlock().NumberU64() < h.checkpointNumber {
+		if h.chain.CurrentBlock().Number.Uint64() < h.checkpointNumber {
 			log.Warn("Unsynced yet, discarded propagated block", "number", blocks[0].Number(), "hash", blocks[0].Hash())
 			return 0, nil
 		}

eth/handler_eth_test.go

@@ -274,7 +274,7 @@ func testRecvTransactions(t *testing.T, protocol uint) {
 	var (
 		genesis = handler.chain.Genesis()
 		head    = handler.chain.CurrentBlock()
-		td      = handler.chain.GetTd(head.Hash(), head.NumberU64())
+		td      = handler.chain.GetTd(head.Hash(), head.Number.Uint64())
 	)
 	if err := src.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain)); err != nil {
 		t.Fatalf("failed to run protocol handshake")
@@ -337,7 +337,7 @@ func testSendTransactions(t *testing.T, protocol uint) {
 	var (
 		genesis = handler.chain.Genesis()
 		head    = handler.chain.CurrentBlock()
-		td      = handler.chain.GetTd(head.Hash(), head.NumberU64())
+		td      = handler.chain.GetTd(head.Hash(), head.Number.Uint64())
 	)
 	if err := sink.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain)); err != nil {
 		t.Fatalf("failed to run protocol handshake")
@@ -545,7 +545,7 @@ func testCheckpointChallenge(t *testing.T, syncmode downloader.SyncMode, checkpo
 	var (
 		genesis = handler.chain.Genesis()
 		head    = handler.chain.CurrentBlock()
-		td      = handler.chain.GetTd(head.Hash(), head.NumberU64())
+		td      = handler.chain.GetTd(head.Hash(), head.Number.Uint64())
 	)
 	if err := remote.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain)); err != nil {
 		t.Fatalf("failed to run protocol handshake")
@@ -661,7 +661,8 @@ func testBroadcastBlock(t *testing.T, peers, bcasts int) {
 	}
 	// Initiate a block propagation across the peers
 	time.Sleep(100 * time.Millisecond)
-	source.handler.BroadcastBlock(source.chain.CurrentBlock(), true)
+	header := source.chain.CurrentBlock()
+	source.handler.BroadcastBlock(source.chain.GetBlock(header.Hash(), header.Number.Uint64()), true)
 
 	// Iterate through all the sinks and ensure the correct number got the block
 	done := make(chan struct{}, peers)
@@ -734,18 +735,19 @@ func testBroadcastMalformedBlock(t *testing.T, protocol uint) {
 
 	// Create various combinations of malformed blocks
 	head := source.chain.CurrentBlock()
+	block := source.chain.GetBlock(head.Hash(), head.Number.Uint64())
 
-	malformedUncles := head.Header()
+	malformedUncles := head
 	malformedUncles.UncleHash[0]++
-	malformedTransactions := head.Header()
+	malformedTransactions := head
 	malformedTransactions.TxHash[0]++
-	malformedEverything := head.Header()
+	malformedEverything := head
 	malformedEverything.UncleHash[0]++
 	malformedEverything.TxHash[0]++
 
 	// Try to broadcast all malformations and ensure they all get discarded
 	for _, header := range []*types.Header{malformedUncles, malformedTransactions, malformedEverything} {
-		block := types.NewBlockWithHeader(header).WithBody(head.Transactions(), head.Uncles())
+		block := types.NewBlockWithHeader(header).WithBody(block.Transactions(), block.Uncles())
 		if err := src.SendNewBlock(block, big.NewInt(131136)); err != nil {
 			t.Fatalf("failed to broadcast block: %v", err)
 		}

eth/peer.go

@@ -17,8 +17,6 @@
 package eth
 
 import (
-	"math/big"
-
 	"github.com/ethereum/go-ethereum/eth/protocols/eth"
 	"github.com/ethereum/go-ethereum/eth/protocols/snap"
 )
@@ -26,9 +24,7 @@ import (
 // ethPeerInfo represents a short summary of the `eth` sub-protocol metadata known
 // about a connected peer.
 type ethPeerInfo struct {
-	Version    uint     `json:"version"`    // Ethereum protocol version negotiated
-	Difficulty *big.Int `json:"difficulty"` // Total difficulty of the peer's blockchain
-	Head       string   `json:"head"`       // Hex hash of the peer's best owned block
+	Version uint `json:"version"` // Ethereum protocol version negotiated
 }
 
 // ethPeer is a wrapper around eth.Peer to maintain a few extra metadata.
@@ -39,12 +35,8 @@ type ethPeer struct {
 
 // info gathers and returns some `eth` protocol metadata known about a peer.
 func (p *ethPeer) info() *ethPeerInfo {
-	hash, td := p.Head()
-
 	return &ethPeerInfo{
-		Version:    p.Version(),
-		Difficulty: td,
-		Head:       hash.Hex(),
+		Version: p.Version(),
 	}
 }
 

eth/protocols/eth/handler.go

@@ -137,12 +137,14 @@ type NodeInfo struct {
 // nodeInfo retrieves some `eth` protocol metadata about the running host node.
 func nodeInfo(chain *core.BlockChain, network uint64) *NodeInfo {
 	head := chain.CurrentBlock()
+	hash := head.Hash()
+
 	return &NodeInfo{
 		Network:    network,
-		Difficulty: chain.GetTd(head.Hash(), head.NumberU64()),
+		Difficulty: chain.GetTd(hash, head.Number.Uint64()),
 		Genesis:    chain.Genesis().Hash(),
 		Config:     chain.Config(),
-		Head:       head.Hash(),
+		Head:       hash,
 	}
 }
 

eth/protocols/eth/handler_test.go

@@ -225,24 +225,24 @@ func testGetBlockHeaders(t *testing.T, protocol uint) {
 			[]common.Hash{backend.chain.GetBlockByNumber(0).Hash()},
 		},
 		{
-			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().NumberU64()}, Amount: 1},
+			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().Number.Uint64()}, Amount: 1},
 			[]common.Hash{backend.chain.CurrentBlock().Hash()},
 		},
 		{ // If the peer requests a bit into the future, we deliver what we have
-			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().NumberU64()}, Amount: 10},
+			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().Number.Uint64()}, Amount: 10},
 			[]common.Hash{backend.chain.CurrentBlock().Hash()},
 		},
 		// Ensure protocol limits are honored
 		{
-			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().NumberU64() - 1}, Amount: limit + 10, Reverse: true},
-			getHashes(backend.chain.CurrentBlock().NumberU64(), limit),
+			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().Number.Uint64() - 1}, Amount: limit + 10, Reverse: true},
+			getHashes(backend.chain.CurrentBlock().Number.Uint64(), limit),
 		},
 		// Check that requesting more than available is handled gracefully
 		{
-			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().NumberU64() - 4}, Skip: 3, Amount: 3},
+			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().Number.Uint64() - 4}, Skip: 3, Amount: 3},
 			[]common.Hash{
-				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().NumberU64() - 4).Hash(),
-				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().NumberU64()).Hash(),
+				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().Number.Uint64() - 4).Hash(),
+				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().Number.Uint64()).Hash(),
 			},
 		}, {
 			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: 4}, Skip: 3, Amount: 3, Reverse: true},
@@ -253,10 +253,10 @@ func testGetBlockHeaders(t *testing.T, protocol uint) {
 		},
 		// Check that requesting more than available is handled gracefully, even if mid skip
 		{
-			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().NumberU64() - 4}, Skip: 2, Amount: 3},
+			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().Number.Uint64() - 4}, Skip: 2, Amount: 3},
 			[]common.Hash{
-				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().NumberU64() - 4).Hash(),
-				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().NumberU64() - 1).Hash(),
+				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().Number.Uint64() - 4).Hash(),
+				backend.chain.GetBlockByNumber(backend.chain.CurrentBlock().Number.Uint64() - 1).Hash(),
 			},
 		}, {
 			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: 4}, Skip: 2, Amount: 3, Reverse: true},
@@ -293,7 +293,7 @@ func testGetBlockHeaders(t *testing.T, protocol uint) {
 			&GetBlockHeadersPacket{Origin: HashOrNumber{Hash: unknown}, Amount: 1},
 			[]common.Hash{},
 		}, {
-			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().NumberU64() + 1}, Amount: 1},
+			&GetBlockHeadersPacket{Origin: HashOrNumber{Number: backend.chain.CurrentBlock().Number.Uint64() + 1}, Amount: 1},
 			[]common.Hash{},
 		},
 	}
@@ -394,7 +394,7 @@ func testGetBlockBodies(t *testing.T, protocol uint) {
 		)
 		for j := 0; j < tt.random; j++ {
 			for {
-				num := rand.Int63n(int64(backend.chain.CurrentBlock().NumberU64()))
+				num := rand.Int63n(int64(backend.chain.CurrentBlock().Number.Uint64()))
 				if !seen[num] {
 					seen[num] = true
 
@@ -529,7 +529,7 @@ func testGetNodeData(t *testing.T, protocol uint, drop bool) {
 
 	// Sanity check whether all state matches.
 	accounts := []common.Address{testAddr, acc1Addr, acc2Addr}
-	for i := uint64(0); i <= backend.chain.CurrentBlock().NumberU64(); i++ {
+	for i := uint64(0); i <= backend.chain.CurrentBlock().Number.Uint64(); i++ {
 		root := backend.chain.GetBlockByNumber(i).Root()
 		reconstructed, _ := state.New(root, state.NewDatabase(reconstructDB), nil)
 		for j, acc := range accounts {
@@ -602,7 +602,7 @@ func testGetBlockReceipts(t *testing.T, protocol uint) {
 		hashes   []common.Hash
 		receipts [][]*types.Receipt
 	)
-	for i := uint64(0); i <= backend.chain.CurrentBlock().NumberU64(); i++ {
+	for i := uint64(0); i <= backend.chain.CurrentBlock().Number.Uint64(); i++ {
 		block := backend.chain.GetBlockByNumber(i)
 
 		hashes = append(hashes, block.Hash())

eth/protocols/eth/handshake_test.go

@@ -39,7 +39,7 @@ func testHandshake(t *testing.T, protocol uint) {
 	var (
 		genesis = backend.chain.Genesis()
 		head    = backend.chain.CurrentBlock()
-		td      = backend.chain.GetTd(head.Hash(), head.NumberU64())
+		td      = backend.chain.GetTd(head.Hash(), head.Number.Uint64())
 		forkID  = forkid.NewID(backend.chain.Config(), backend.chain.Genesis().Hash(), backend.chain.CurrentHeader().Number.Uint64(), backend.chain.CurrentHeader().Time)
 	)
 	tests := []struct {

eth/sync.go

@@ -206,22 +206,22 @@ func peerToSyncOp(mode downloader.SyncMode, p *eth.Peer) *chainSyncOp {
 func (cs *chainSyncer) modeAndLocalHead() (downloader.SyncMode, *big.Int) {
 	// If we're in snap sync mode, return that directly
 	if atomic.LoadUint32(&cs.handler.snapSync) == 1 {
-		block := cs.handler.chain.CurrentFastBlock()
-		td := cs.handler.chain.GetTd(block.Hash(), block.NumberU64())
+		block := cs.handler.chain.CurrentSnapBlock()
+		td := cs.handler.chain.GetTd(block.Hash(), block.Number.Uint64())
 		return downloader.SnapSync, td
 	}
 	// We are probably in full sync, but we might have rewound to before the
 	// snap sync pivot, check if we should reenable
 	if pivot := rawdb.ReadLastPivotNumber(cs.handler.database); pivot != nil {
-		if head := cs.handler.chain.CurrentBlock(); head.NumberU64() < *pivot {
-			block := cs.handler.chain.CurrentFastBlock()
-			td := cs.handler.chain.GetTd(block.Hash(), block.NumberU64())
+		if head := cs.handler.chain.CurrentBlock(); head.Number.Uint64() < *pivot {
+			block := cs.handler.chain.CurrentSnapBlock()
+			td := cs.handler.chain.GetTd(block.Hash(), block.Number.Uint64())
 			return downloader.SnapSync, td
 		}
 	}
 	// Nope, we're really full syncing
 	head := cs.handler.chain.CurrentBlock()
-	td := cs.handler.chain.GetTd(head.Hash(), head.NumberU64())
+	td := cs.handler.chain.GetTd(head.Hash(), head.Number.Uint64())
 	return downloader.FullSync, td
 }
 
@@ -263,21 +263,23 @@ func (h *handler) doSync(op *chainSyncOp) error {
 	// If we've successfully finished a sync cycle and passed any required checkpoint,
 	// enable accepting transactions from the network.
 	head := h.chain.CurrentBlock()
-	if head.NumberU64() >= h.checkpointNumber {
+	if head.Number.Uint64() >= h.checkpointNumber {
 		// Checkpoint passed, sanity check the timestamp to have a fallback mechanism
 		// for non-checkpointed (number = 0) private networks.
-		if head.Time() >= uint64(time.Now().AddDate(0, -1, 0).Unix()) {
+		if head.Time >= uint64(time.Now().AddDate(0, -1, 0).Unix()) {
 			atomic.StoreUint32(&h.acceptTxs, 1)
 		}
 	}
-	if head.NumberU64() > 0 {
+	if head.Number.Uint64() > 0 {
 		// We've completed a sync cycle, notify all peers of new state. This path is
 		// essential in star-topology networks where a gateway node needs to notify
 		// all its out-of-date peers of the availability of a new block. This failure
 		// scenario will most often crop up in private and hackathon networks with
 		// degenerate connectivity, but it should be healthy for the mainnet too to
 		// more reliably update peers or the local TD state.
-		h.BroadcastBlock(head, false)
+		if block := h.chain.GetBlock(head.Hash(), head.Number.Uint64()); block != nil {
+			h.BroadcastBlock(block, false)
+		}
 	}
 	return nil
 }

eth/tracers/api.go

@@ -295,9 +295,10 @@ func (api *API) traceChain(start, end *types.Block, config *TraceConfig, closed
 				for i, tx := range task.block.Transactions() {
 					msg, _ := tx.AsMessage(signer, task.block.BaseFee())
 					txctx := &Context{
-						BlockHash: task.block.Hash(),
-						TxIndex:   i,
-						TxHash:    tx.Hash(),
+						BlockHash:   task.block.Hash(),
+						BlockNumber: task.block.Number(),
+						TxIndex:     i,
+						TxHash:      tx.Hash(),
 					}
 					res, err := api.traceTx(ctx, msg, txctx, blockCtx, task.statedb, config)
 					if err != nil {
@@ -629,9 +630,10 @@ func (api *API) traceBlock(ctx context.Context, block *types.Block, config *Trac
 		// Generate the next state snapshot fast without tracing
 		msg, _ := tx.AsMessage(signer, block.BaseFee())
 		txctx := &Context{
-			BlockHash: blockHash,
-			TxIndex:   i,
-			TxHash:    tx.Hash(),
+			BlockHash:   blockHash,
+			BlockNumber: block.Number(),
+			TxIndex:     i,
+			TxHash:      tx.Hash(),
 		}
 		res, err := api.traceTx(ctx, msg, txctx, blockCtx, statedb, config)
 		if err != nil {
@@ -671,9 +673,10 @@ func (api *API) traceBlockParallel(ctx context.Context, block *types.Block, stat
 			for task := range jobs {
 				msg, _ := txs[task.index].AsMessage(signer, block.BaseFee())
 				txctx := &Context{
-					BlockHash: blockHash,
-					TxIndex:   task.index,
-					TxHash:    txs[task.index].Hash(),
+					BlockHash:   blockHash,
+					BlockNumber: block.Number(),
+					TxIndex:     task.index,
+					TxHash:      txs[task.index].Hash(),
 				}
 				res, err := api.traceTx(ctx, msg, txctx, blockCtx, task.statedb, config)
 				if err != nil {
@@ -874,9 +877,10 @@ func (api *API) TraceTransaction(ctx context.Context, hash common.Hash, config *
 	defer release()
 
 	txctx := &Context{
-		BlockHash: blockHash,
-		TxIndex:   int(index),
-		TxHash:    hash,
+		BlockHash:   blockHash,
+		BlockNumber: block.Number(),
+		TxIndex:     int(index),
+		TxHash:      hash,
 	}
 	return api.traceTx(ctx, msg, txctx, vmctx, statedb, config)
 }

eth/tracers/api_test.go

@@ -109,7 +109,7 @@ func (b *testBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types
 
 func (b *testBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
 	if number == rpc.PendingBlockNumber || number == rpc.LatestBlockNumber {
-		return b.chain.CurrentBlock(), nil
+		return b.chain.GetBlockByNumber(b.chain.CurrentBlock().Number.Uint64()), nil
 	}
 	return b.chain.GetBlockByNumber(uint64(number)), nil
 }

eth/tracers/internal/tracetest/calltrace_test.go

@@ -58,7 +58,7 @@ type callTrace struct {
 	From         common.Address  `json:"from"`
 	Gas          *hexutil.Uint64 `json:"gas"`
 	GasUsed      *hexutil.Uint64 `json:"gasUsed"`
-	To           common.Address  `json:"to,omitempty"`
+	To           *common.Address `json:"to,omitempty"`
 	Input        hexutil.Bytes   `json:"input"`
 	Output       hexutil.Bytes   `json:"output,omitempty"`
 	Error        string          `json:"error,omitempty"`

eth/tracers/internal/tracetest/flat_calltrace_test.go

@@ -0,0 +1,213 @@
+package tracetest
+
+import (
+	"encoding/json"
+	"fmt"
+	"math/big"
+	"os"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/ethereum/go-ethereum/tests"
+
+	// Force-load the native, to trigger registration
+	"github.com/ethereum/go-ethereum/eth/tracers"
+)
+
+// flatCallTrace is the result of a callTracerParity run.
+type flatCallTrace struct {
+	Action              flatCallTraceAction `json:"action"`
+	BlockHash           common.Hash         `json:"-"`
+	BlockNumber         uint64              `json:"-"`
+	Error               string              `json:"error,omitempty"`
+	Result              flatCallTraceResult `json:"result,omitempty"`
+	Subtraces           int                 `json:"subtraces"`
+	TraceAddress        []int               `json:"traceAddress"`
+	TransactionHash     common.Hash         `json:"-"`
+	TransactionPosition uint64              `json:"-"`
+	Type                string              `json:"type"`
+	Time                string              `json:"-"`
+}
+
+type flatCallTraceAction struct {
+	Author         common.Address `json:"author,omitempty"`
+	RewardType     string         `json:"rewardType,omitempty"`
+	SelfDestructed common.Address `json:"address,omitempty"`
+	Balance        hexutil.Big    `json:"balance,omitempty"`
+	CallType       string         `json:"callType,omitempty"`
+	CreationMethod string         `json:"creationMethod,omitempty"`
+	From           common.Address `json:"from,omitempty"`
+	Gas            hexutil.Uint64 `json:"gas,omitempty"`
+	Init           hexutil.Bytes  `json:"init,omitempty"`
+	Input          hexutil.Bytes  `json:"input,omitempty"`
+	RefundAddress  common.Address `json:"refundAddress,omitempty"`
+	To             common.Address `json:"to,omitempty"`
+	Value          hexutil.Big    `json:"value,omitempty"`
+}
+
+type flatCallTraceResult struct {
+	Address common.Address `json:"address,omitempty"`
+	Code    hexutil.Bytes  `json:"code,omitempty"`
+	GasUsed hexutil.Uint64 `json:"gasUsed,omitempty"`
+	Output  hexutil.Bytes  `json:"output,omitempty"`
+}
+
+// flatCallTracerTest defines a single test to check the call tracer against.
+type flatCallTracerTest struct {
+	Genesis      core.Genesis    `json:"genesis"`
+	Context      callContext     `json:"context"`
+	Input        string          `json:"input"`
+	TracerConfig json.RawMessage `json:"tracerConfig"`
+	Result       []flatCallTrace `json:"result"`
+}
+
+func flatCallTracerTestRunner(tracerName string, filename string, dirPath string, t testing.TB) error {
+	// Call tracer test found, read if from disk
+	blob, err := os.ReadFile(filepath.Join("testdata", dirPath, filename))
+	if err != nil {
+		return fmt.Errorf("failed to read testcase: %v", err)
+	}
+	test := new(flatCallTracerTest)
+	if err := json.Unmarshal(blob, test); err != nil {
+		return fmt.Errorf("failed to parse testcase: %v", err)
+	}
+	// Configure a blockchain with the given prestate
+	tx := new(types.Transaction)
+	if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
+		return fmt.Errorf("failed to parse testcase input: %v", err)
+	}
+	signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
+	origin, _ := signer.Sender(tx)
+	txContext := vm.TxContext{
+		Origin:   origin,
+		GasPrice: tx.GasPrice(),
+	}
+	context := vm.BlockContext{
+		CanTransfer: core.CanTransfer,
+		Transfer:    core.Transfer,
+		Coinbase:    test.Context.Miner,
+		BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
+		Time:        uint64(test.Context.Time),
+		Difficulty:  (*big.Int)(test.Context.Difficulty),
+		GasLimit:    uint64(test.Context.GasLimit),
+	}
+	_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
+
+	// Create the tracer, the EVM environment and run it
+	tracer, err := tracers.DefaultDirectory.New(tracerName, new(tracers.Context), test.TracerConfig)
+	if err != nil {
+		return fmt.Errorf("failed to create call tracer: %v", err)
+	}
+	evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
+
+	msg, err := tx.AsMessage(signer, nil)
+	if err != nil {
+		return fmt.Errorf("failed to prepare transaction for tracing: %v", err)
+	}
+	st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
+
+	if _, err = st.TransitionDb(); err != nil {
+		return fmt.Errorf("failed to execute transaction: %v", err)
+	}
+
+	// Retrieve the trace result and compare against the etalon
+	res, err := tracer.GetResult()
+	if err != nil {
+		return fmt.Errorf("failed to retrieve trace result: %v", err)
+	}
+	ret := new([]flatCallTrace)
+	if err := json.Unmarshal(res, ret); err != nil {
+		return fmt.Errorf("failed to unmarshal trace result: %v", err)
+	}
+	if !jsonEqualFlat(ret, test.Result) {
+		t.Logf("tracer name: %s", tracerName)
+
+		// uncomment this for easier debugging
+		// have, _ := json.MarshalIndent(ret, "", " ")
+		// want, _ := json.MarshalIndent(test.Result, "", " ")
+		// t.Logf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want))
+
+		// uncomment this for harder debugging <3 meowsbits
+		// lines := deep.Equal(ret, test.Result)
+		// for _, l := range lines {
+		// 	t.Logf("%s", l)
+		// 	t.FailNow()
+		// }
+
+		t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, test.Result)
+	}
+	return nil
+}
+
+// Iterates over all the input-output datasets in the tracer parity test harness and
+// runs the Native tracer against them.
+func TestFlatCallTracerNative(t *testing.T) {
+	testFlatCallTracer("flatCallTracer", "call_tracer_flat", t)
+}
+
+func testFlatCallTracer(tracerName string, dirPath string, t *testing.T) {
+	files, err := os.ReadDir(filepath.Join("testdata", dirPath))
+	if err != nil {
+		t.Fatalf("failed to retrieve tracer test suite: %v", err)
+	}
+	for _, file := range files {
+		if !strings.HasSuffix(file.Name(), ".json") {
+			continue
+		}
+		file := file // capture range variable
+		t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) {
+			t.Parallel()
+
+			err := flatCallTracerTestRunner(tracerName, file.Name(), dirPath, t)
+			if err != nil {
+				t.Fatal(err)
+			}
+		})
+	}
+}
+
+// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to
+// comparison
+func jsonEqualFlat(x, y interface{}) bool {
+	xTrace := new([]flatCallTrace)
+	yTrace := new([]flatCallTrace)
+	if xj, err := json.Marshal(x); err == nil {
+		json.Unmarshal(xj, xTrace)
+	} else {
+		return false
+	}
+	if yj, err := json.Marshal(y); err == nil {
+		json.Unmarshal(yj, yTrace)
+	} else {
+		return false
+	}
+	return reflect.DeepEqual(xTrace, yTrace)
+}
+
+func BenchmarkFlatCallTracer(b *testing.B) {
+	files, err := filepath.Glob("testdata/call_tracer_flat/*.json")
+	if err != nil {
+		b.Fatalf("failed to read testdata: %v", err)
+	}
+
+	for _, file := range files {
+		filename := strings.TrimPrefix(file, "testdata/call_tracer_flat/")
+		b.Run(camel(strings.TrimSuffix(filename, ".json")), func(b *testing.B) {
+			for n := 0; n < b.N; n++ {
+				err := flatCallTracerTestRunner("flatCallTracer", filename, "call_tracer_flat", b)
+				if err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+	}
+}

eth/tracers/internal/tracetest/testdata/call_tracer/inner_revert_reason.json

@@ -50,7 +50,6 @@
   "input": "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",
   "result": {
     "from": "0x3623191d4ccfbbdf09e8ebf6382a1f8257417bc1",
-    "to": "0x0000000000000000000000000000000000000000",
     "gas": "0x2cd774",
     "gasUsed": "0x25590",
     "input": "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",

eth/tracers/internal/tracetest/testdata/call_tracer_flat/big_slow.json

@@ -0,0 +1,64 @@
+{
+  "genesis": {
+    "difficulty": "50486697699375",
+    "extraData": "0xd783010406844765746887676f312e362e32856c696e7578",
+    "gasLimit": "4788482",
+    "hash": "0xf6bbc5bbe34d5c93fd5b4712cd498d1026b8b0f586efefe7fe30231ed6b8a1a5",
+    "miner": "0xbcdfc35b86bedf72f0cda046a3c16829a2ef41d1",
+    "mixHash": "0xabca93555584c0463ee5c212251dd002bb3a93a157e06614276f93de53d4fdb8",
+    "nonce": "0xa64136fcb9c2d4ca",
+    "number": "1719576",
+    "stateRoot": "0xab5eec2177a92d633e282936af66c46e24cfa8f2fdc2b8155f33885f483d06f3",
+    "timestamp": "1466150166",
+    "totalDifficulty": "28295412423546970038",
+    "alloc": {
+      "0xf8bda96b67036ee48107f2a0695ea673479dda56": {
+        "balance": "0x1529e844f9ecdeec",
+        "nonce": "33",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 1,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 3000000,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 1150000,
+      "byzantiumBlock": 8772000,
+      "constantinopleBlock": 9573000,
+      "petersburgBlock": 10500839,
+      "istanbulBlock": 10500839
+    }
+  },
+  "context": {
+    "number": "1719577",
+    "difficulty": "50486697732143",
+    "timestamp": "1466150178",
+    "gasLimit": "4788484",
+    "miner": "0x2a65aca4d5fc5b5c859090a6c34d164135398226"
+  },
+  "input": "0xf874218504a817c800832318608080a35b620186a05a131560135760016020526000565b600080601f600039601f565b6000f31ba0575fa000a1f06659a7b6d3c7877601519a4997f04293f0dfa0eee6d8cd840c77a04c52ce50719ee2ff7a0c5753f4ee69c0340666f582dbb5148845a354ca726e4a",
+  "result": [
+    {
+      "action": {
+        "from": "0xf8bda96b67036ee48107f2a0695ea673479dda56",
+        "gas": "0x22410c",
+        "init": "0x5b620186a05a131560135760016020526000565b600080601f600039601f565b6000f3",
+        "value": "0x0"
+      },
+      "blockNumber": 1719577,
+      "result": {
+        "address": "0xb2e6a2546c45889427757171ab05b8b438525b42",
+        "code": "0x",
+        "gasUsed": "0x219202"
+      },
+      "subtraces": 0,
+      "traceAddress": [],
+      "type": "create"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/callcode_precompiled_fail_hide.json

@@ -0,0 +1,74 @@
+{
+  "genesis": {
+    "difficulty": "4671584",
+    "extraData": "0xd683010b05846765746886676f312e3133856c696e7578",
+    "gasLimit": "9435026",
+    "hash": "0x755bd54de4b2f5a7a589a10d69888b4ead48a6311d5d69f2f69ca85ec35fbe0b",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+    "mixHash": "0x3a44525624571c31344ba57780f7664098fe7cbeafe532bcdee76a23fc474ba0",
+    "nonce": "0x6dca647c00c72bbf",
+    "number": "1555278",
+    "stateRoot": "0x5f56d8323ee384b0c8d1de49d63e150e17283eea813483698362bc0ec9e0242a",
+    "timestamp": "1590795319",
+    "totalDifficulty": "2242614315030",
+    "alloc": {
+      "0x0000000000000000000000000000000000000004": {
+        "balance": "0x0",
+        "nonce": "0",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x62436e941792f02a5fb1",
+        "nonce": "265356",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "1555279",
+    "difficulty": "4669303",
+    "timestamp": "1590795340",
+    "gasLimit": "9444238",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+  },
+  "input": "0xf86f83040c8c843b9aca0083019f7880809b60206000600060006013600462030d40f26002556000516000550081a2a086ad228c89ad9664287b12a5602a635a803506904f4ce39795990ac4f945cd57a025b30ea8042d773f6c5b13d7cc1b3979f9f10ee674410b6a2112ce840d0302dc",
+  "result": [
+    {
+      "type": "create",
+      "action": {
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "value": "0x0",
+        "gas": "0xcf08",
+        "init": "0x60206000600060006013600462030d40f260025560005160005500"
+      },
+      "result": {
+        "gasUsed": "0xf3bc",
+        "code": "0x",
+        "address": "0x5f8a7e007172ba80afbff1b15f800eb0b260f224"
+      },
+      "traceAddress": [],
+      "subtraces": 0,
+      "transactionPosition": 74,
+      "transactionHash": "0x5ef60b27ac971c22a7d484e546e50093ca62300c8986d165154e47773764b6a4",
+      "blockNumber": 1555279,
+      "blockHash": "0xd6c98d1b87dfa92a210d99bad2873adaf0c9e51fe43addc63fd9cca03a5c6f46",
+      "time": "209.346µs"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/callcode_precompiled_oog.json

@@ -0,0 +1,94 @@
+{
+  "genesis": {
+    "difficulty": "4671584",
+    "extraData": "0xd883010b05846765746888676f312e31342e33856c696e7578",
+    "gasLimit": "9425823",
+    "hash": "0x27dd7d052dbc8a29cc5b9487e1e41d842e7a643fcaea4964caa22b834964acaf",
+    "miner": "0x73f26d124436b0791169d63a3af29c2ae47765a3",
+    "mixHash": "0xb4a050624f5d147fdf02857cbfd55da3ddc1451743acc5c163861584589c3034",
+    "nonce": "0x3c255875b17e0573",
+    "number": "1555277",
+    "stateRoot": "0x6290d79215a2eebc25d5e456b35876c6d78ffc1ea47bdd70e375ebb3cf325620",
+    "timestamp": "1590795308",
+    "totalDifficulty": "2242609643446",
+    "alloc": {
+      "0x0000000000000000000000000000000000000001": {
+        "balance": "0x0",
+        "nonce": "0",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x624329308610ab365fb1",
+        "nonce": "265194",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "1555278",
+    "difficulty": "4671584",
+    "timestamp": "1590795319",
+    "gasLimit": "9435026",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+  },
+  "input": "0xf8ee83040bea843b9aca008301a7588080b8997f18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c600052601c6020527f73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f6040527feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549606052602060806080600060006001610bb7f260025560a060020a6080510660005560005432146001550081a1a05b9a162d84bfe84faa7c176e21c26c0083645d4dd0d566547b7be2c2da0b4259a05b37ff12a4c27634cb0da6008d9b69726d415ff4694f9bc38c7806eb1fb60ae9",
+  "result": [
+    {
+      "type": "create",
+      "action": {
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "value": "0x0",
+        "gas": "0xcf08",
+        "init": "0x7f18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c600052601c6020527f73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f6040527feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549606052602060806080600060006001610bb7f260025560a060020a60805106600055600054321460015500"
+      },
+      "result": {
+        "gasUsed": "0xf3e9",
+        "code": "0x",
+        "address": "0x568c19ecb14b87e4aec29b4d2d700a3ad3fd0613"
+      },
+      "traceAddress": [],
+      "subtraces": 1,
+      "transactionPosition": 141,
+      "transactionHash": "0x1592cbda0d928b8d18eed98857942b91ade32d088e55b8bf63418917cb0231f1",
+      "blockNumber": 1555278,
+      "blockHash": "0x755bd54de4b2f5a7a589a10d69888b4ead48a6311d5d69f2f69ca85ec35fbe0b",
+      "time": "300.9µs"
+    },
+    {
+      "type": "call",
+      "action": {
+        "from": "0x568c19ecb14b87e4aec29b4d2d700a3ad3fd0613",
+        "to": "0x0000000000000000000000000000000000000001",
+        "value": "0x0",
+        "gas": "0xbb7",
+        "input": "0x18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c000000000000000000000000000000000000000000000000000000000000001c73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549",
+        "callType": "callcode"
+      },
+      "error": "out of gas",
+      "traceAddress": [
+        0
+      ],
+      "subtraces": 0,
+      "transactionPosition": 141,
+      "transactionHash": "0x1592cbda0d928b8d18eed98857942b91ade32d088e55b8bf63418917cb0231f1",
+      "blockNumber": 1555278,
+      "blockHash": "0x755bd54de4b2f5a7a589a10d69888b4ead48a6311d5d69f2f69ca85ec35fbe0b"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/callcode_precompiled_throw.json

@@ -0,0 +1,90 @@
+{
+  "genesis": {
+    "difficulty": "4683014",
+    "extraData": "0x537465762d63676574682d76312e31312e34",
+    "gasLimit": "9435044",
+    "hash": "0x3452ca5005cb73cd60dfa488a7b124251168e564491f80eb66765e79d78cfd95",
+    "miner": "0x415aa6292d1db797a467b22139704956c030e62f",
+    "mixHash": "0x6037612618507ae70c74a72bc2580253662971db959cfbc06d3f8527d4d01575",
+    "nonce": "0x314fc90dee5e39a2",
+    "number": "1555274",
+    "stateRoot": "0x795751f3f96a5de1fd3944ddd78cbfe4ef10491e1086be47609869a30929d0e5",
+    "timestamp": "1590795228",
+    "totalDifficulty": "2242595605834",
+    "alloc": {
+      "0x0000000000000000000000000000000000000009": {
+        "balance": "0x0",
+        "nonce": "0",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x6242e3ccf48e66425fb1",
+        "nonce": "264981",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "1555275",
+    "difficulty": "4683014",
+    "timestamp": "1590795244",
+    "gasLimit": "9444256",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+  },
+  "input": "0xf87a83040b15843b9aca008301a0348080a636600060003760406103e8366000600060095af26001556103e851600255610408516003550081a1a0dd883fbbb489b640dadc8c1bf151767155228d0a1321f687f070f35f14374b05a02dd0ccb16a8de39bc8ee61381bbbbb54f0ab18422afd7b03c6163da1f5023934",
+  "result": [
+    {
+      "type": "create",
+      "action": {
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "value": "0x0",
+        "gas": "0xcf08",
+        "init": "0x36600060003760406103e8366000600060095af26001556103e8516002556104085160035500"
+      },
+      "error": "out of gas",
+      "traceAddress": [],
+      "subtraces": 1,
+      "transactionPosition": 117,
+      "transactionHash": "0x7fe4dec901e1a62c1a1d96b8267bb9ff9dc1f75def43aa45b998743455eff8f9",
+      "blockNumber": 1555275,
+      "blockHash": "0x80945caaff2fc67253cbb0217d2e5a307afde943929e97d8b36e58b88cbb02fd",
+      "time": "332.877µs"
+    },
+    {
+      "type": "call",
+      "action": {
+        "from": "0x8832ef498070145c3a5b30f47fbca71fd7b1de9f",
+        "to": "0x0000000000000000000000000000000000000009",
+        "value": "0x0",
+        "gas": "0xc897",
+        "input": "0x",
+        "callType": "callcode"
+      },
+      "error": "invalid input length",
+      "traceAddress": [
+        0
+      ],
+      "subtraces": 0,
+      "transactionPosition": 117,
+      "transactionHash": "0x7fe4dec901e1a62c1a1d96b8267bb9ff9dc1f75def43aa45b998743455eff8f9",
+      "blockNumber": 1555275,
+      "blockHash": "0x80945caaff2fc67253cbb0217d2e5a307afde943929e97d8b36e58b88cbb02fd"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/create.json

@@ -0,0 +1,67 @@
+{
+  "context": {
+    "difficulty": "3755480783",
+    "gasLimit": "5401723",
+    "miner": "0xd049bfd667cb46aa3ef5df0da3e57db3be39e511",
+    "number": "2294702",
+    "timestamp": "1513676146"
+  },
+  "genesis": {
+    "alloc": {
+      "0x13e4acefe6a6700604929946e70e6443e4e73447": {
+        "balance": "0xcf3e0938579f000",
+        "code": "0x",
+        "nonce": "9",
+        "storage": {}
+      },
+      "0x7dc9c9730689ff0b0fd506c67db815f12d90a448": {
+        "balance": "0x0",
+        "code": "0x",
+        "nonce": "0",
+        "storage": {}
+      }
+    },
+    "config": {
+      "byzantiumBlock": 1700000,
+      "chainId": 3,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 10,
+      "eip158Block": 10,
+      "ethash": {},
+      "homesteadBlock": 0
+    },
+    "difficulty": "3757315409",
+    "extraData": "0x566961425443",
+    "gasLimit": "5406414",
+    "hash": "0xae107f592eebdd9ff8d6ba00363676096e6afb0e1007a7d3d0af88173077378d",
+    "miner": "0xd049bfd667cb46aa3ef5df0da3e57db3be39e511",
+    "mixHash": "0xc927aa05a38bc3de864e95c33b3ae559d3f39c4ccd51cef6f113f9c50ba0caf1",
+    "nonce": "0x93363bbd2c95f410",
+    "number": "2294701",
+    "stateRoot": "0x6b6737d5bde8058990483e915866bd1578014baeff57bd5e4ed228a2bfad635c",
+    "timestamp": "1513676127",
+    "totalDifficulty": "7160808139332585"
+  },
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+  "result": [
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+        "value": "0x0"
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+      "blockNumber": 2294702,
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+        "gasUsed": "0x897be"
+      },
+      "subtraces": 0,
+      "traceAddress": [],
+      "type": "create"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/delegatecall_parent_value.json

@@ -0,0 +1,103 @@
+{
+  "genesis": {
+    "number": "566098",
+    "hash": "0xba134562590a59291892395a29c5088899c2c64d720135dad88f7f076cf55f5f",
+    "nonce": "0x4b281be9594e3eb3",
+    "mixHash": "0xdb4ec386166d9c0dc9ba147755ecbb87af9f0a22563cbda02c799efa4e29db6e",
+    "stateRoot": "0xfc01993ad96a8fb8790a093cea4f505f8db1b0e1143c5f57bb1d173db0baa9e3",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+    "difficulty": "1926740",
+    "totalDifficulty": "482216286599",
+    "extraData": "0xd883010906846765746888676f312e31332e35856c696e7578",
+    "gasLimit": "19388354",
+    "timestamp": "1577558314",
+    "alloc": {
+      "0x6ab9dd83108698b9ca8d03af3c7eb91c0e54c3fc": {
+        "balance": "0x0",
+        "nonce": "0",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0xcbd5b9b25d1c38c2aad",
+        "nonce": "134969",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x91765918420bcb5ad22ee0997abed04056705798": {
+        "balance": "0x0",
+        "nonce": "1",
+        "code": "0x366000803760206000366000736ab9dd83108698b9ca8d03af3c7eb91c0e54c3fc60325a03f41560015760206000f3",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "566099",
+    "difficulty": "1927680",
+    "timestamp": "1577558317",
+    "gasLimit": "19369422",
+    "miner": "0x774c398d763161f55b66a646f17edda4addad2ca"
+  },
+  "input": "0xf87983020f3985746a52880083015f909491765918420bcb5ad22ee0997abed04056705798888ac7230489e80000884e45375a4741394181a1a04b7260723fd02830754916b3bdf1537b6a851a7ae27c7e9296cfe1fc8275ec08a049d32158988eb717d61b4503b27c7583037c067daba1eb56f4bdfafc1b0045f6",
+  "result": [
+    {
+      "action": {
+        "callType": "call",
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "gas": "0x10b68",
+        "input": "0x4e45375a47413941",
+        "to": "0x91765918420bcb5ad22ee0997abed04056705798",
+        "value": "0x8ac7230489e80000"
+      },
+      "blockHash": "0xb05cc5c8f11df2b5d53ced342ee79e2805785f04c2f40add4539f27bd349f74e",
+      "blockNumber": 566099,
+      "result": {
+        "gasUsed": "0x5721",
+        "output": "0x4e45375a47413941000000000000000000000000000000000000000000000000"
+      },
+      "subtraces": 1,
+      "traceAddress": [],
+      "transactionHash": "0x6e26dffe2f66186f03a2c36a16a4cd9724d07622c83746f1e35f988515713d4b",
+      "transactionPosition": 10,
+      "type": "call"
+    },
+    {
+      "action": {
+        "callType": "delegatecall",
+        "from": "0x91765918420bcb5ad22ee0997abed04056705798",
+        "gas": "0x10463",
+        "input": "0x4e45375a47413941",
+        "to": "0x6ab9dd83108698b9ca8d03af3c7eb91c0e54c3fc",
+        "value": "0x8ac7230489e80000"
+      },
+      "blockHash": "0xb05cc5c8f11df2b5d53ced342ee79e2805785f04c2f40add4539f27bd349f74e",
+      "blockNumber": 566099,
+      "result": {
+        "gasUsed": "0x0",
+        "output": "0x"
+      },
+      "subtraces": 0,
+      "traceAddress": [
+        0
+      ],
+      "transactionHash": "0x6e26dffe2f66186f03a2c36a16a4cd9724d07622c83746f1e35f988515713d4b",
+      "transactionPosition": 10,
+      "type": "call"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/gas.json

@@ -0,0 +1,95 @@
+{
+  "genesis": {
+    "difficulty": "4683014",
+    "extraData": "0x537465762d63676574682d76312e31312e34",
+    "gasLimit": "9435044",
+    "hash": "0x3452ca5005cb73cd60dfa488a7b124251168e564491f80eb66765e79d78cfd95",
+    "miner": "0x415aa6292d1db797a467b22139704956c030e62f",
+    "mixHash": "0x6037612618507ae70c74a72bc2580253662971db959cfbc06d3f8527d4d01575",
+    "nonce": "0x314fc90dee5e39a2",
+    "number": "1555274",
+    "stateRoot": "0x795751f3f96a5de1fd3944ddd78cbfe4ef10491e1086be47609869a30929d0e5",
+    "timestamp": "1590795228",
+    "totalDifficulty": "2242595605834",
+    "alloc": {
+      "0x0000000000000000000000000000000000000001": {
+        "balance": "0x0",
+        "nonce": "0",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x6242e3ccf48e66425fb1",
+        "nonce": "264882",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "1555275",
+    "difficulty": "4683014",
+    "timestamp": "1590795244",
+    "gasLimit": "9444256",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+  },
+  "input": "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",
+  "result": [
+    {
+      "type": "create",
+      "action": {
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "value": "0x0",
+        "gas": "0xcf08",
+        "init": "0x601b565b6000555b005b630badf00d6003565b63c001f00d6003565b7319e7e376e7c213b7e7e7e46cc70a5dd086daff2a7f22ae6da6b482f9b1b19b0b897c3fd43884180a1c5ee361e1107a1bc635649dda600052601b603f537f16433dce375ce6dc8151d3f0a22728bc4a1d9fd6ed39dfd18b4609331937367f6040527f306964c0cf5d74f04129fdc60b54d35b596dde1bf89ad92cb4123318f4c0e40060605260206080607f60006000600161fffff21560075760805114601257600956"
+      },
+      "result": {
+        "gasUsed": "0x137e5",
+        "code": "0x",
+        "address": "0x1a05d76017ca02010533a470e05e8925a0380d8f"
+      },
+      "traceAddress": [],
+      "subtraces": 1,
+      "transactionPosition": 18,
+      "transactionHash": "0xc1c42a325856d513523aec464811923b2e2926f54015c7ba37877064cf889803",
+      "blockNumber": 1555275,
+      "blockHash": "0x80945caaff2fc67253cbb0217d2e5a307afde943929e97d8b36e58b88cbb02fd",
+      "time": "453.925µs"
+    },
+    {
+      "type": "call",
+      "action": {
+        "from": "0x1a05d76017ca02010533a470e05e8925a0380d8f",
+        "to": "0x0000000000000000000000000000000000000001",
+        "value": "0x0",
+        "gas": "0xc8c6",
+        "input": "0x22ae6da6b482f9b1b19b0b897c3fd43884180a1c5ee361e1107a1bc635649dda000000000000000000000000000000000000000000000000000000000000001b16433dce375ce6dc8151d3f0a22728bc4a1d9fd6ed39dfd18b4609331937367f306964c0cf5d74f04129fdc60b54d35b596dde1bf89ad92cb4123318f4c0e4",
+        "callType": "callcode"
+      },
+      "result": {
+        "gasUsed": "0xbb8",
+        "output": "0x00000000000000000000000019e7e376e7c213b7e7e7e46cc70a5dd086daff2a"
+      },
+      "traceAddress": [0],
+      "subtraces": 0,
+      "transactionPosition": 18,
+      "transactionHash": "0xc1c42a325856d513523aec464811923b2e2926f54015c7ba37877064cf889803",
+      "blockNumber": 1555275,
+      "blockHash": "0x80945caaff2fc67253cbb0217d2e5a307afde943929e97d8b36e58b88cbb02fd"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/inner_instafail.json

@@ -0,0 +1,72 @@
+{
+  "genesis": {
+    "difficulty": "117067574",
+    "extraData": "0xd783010502846765746887676f312e372e33856c696e7578",
+    "gasLimit": "4712380",
+    "hash": "0xe05db05eeb3f288041ecb10a787df121c0ed69499355716e17c307de313a4486",
+    "miner": "0x0c062b329265c965deef1eede55183b3acb8f611",
+    "mixHash": "0xb669ae39118a53d2c65fd3b1e1d3850dd3f8c6842030698ed846a2762d68b61d",
+    "nonce": "0x2b469722b8e28c45",
+    "number": "24973",
+    "stateRoot": "0x532a5c3f75453a696428db078e32ae283c85cb97e4d8560dbdf022adac6df369",
+    "timestamp": "1479891145",
+    "totalDifficulty": "1892250259406",
+    "alloc": {
+      "0x6c06b16512b332e6cd8293a2974872674716ce18": {
+        "balance": "0x0",
+        "nonce": "1",
+        "code": "0x60606040526000357c0100000000000000000000000000000000000000000000000000000000900480632e1a7d4d146036575b6000565b34600057604e60048080359060200190919050506050565b005b3373ffffffffffffffffffffffffffffffffffffffff166108fc829081150290604051809050600060405180830381858888f19350505050505b5056",
+        "storage": {}
+      },
+      "0x66fdfd05e46126a07465ad24e40cc0597bc1ef31": {
+        "balance": "0x229ebbb36c3e0f20",
+        "nonce": "3",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 3,
+      "homesteadBlock": 0,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 10,
+      "eip158Block": 10,
+      "byzantiumBlock": 1700000,
+      "constantinopleBlock": 4230000,
+      "petersburgBlock": 4939394,
+      "istanbulBlock": 6485846,
+      "muirGlacierBlock": 7117117,
+      "ethash": {}
+    }
+  },
+  "context": {
+    "number": "24974",
+    "difficulty": "117067574",
+    "timestamp": "1479891162",
+    "gasLimit": "4712388",
+    "miner": "0xc822ef32e6d26e170b70cf761e204c1806265914"
+  },
+  "input": "0xf889038504a81557008301f97e946c06b16512b332e6cd8293a2974872674716ce1880a42e1a7d4d00000000000000000000000000000000000000000000000014d1120d7b1600002aa0e2a6558040c5d72bc59f2fb62a38993a314c849cd22fb393018d2c5af3112095a01bdb6d7ba32263ccc2ecc880d38c49d9f0c5a72d8b7908e3122b31356d349745",
+  "result": [
+    {
+      "action": {
+        "callType": "call",
+        "from": "0x66fdfd05e46126a07465ad24e40cc0597bc1ef31",
+        "gas": "0x1a466",
+        "input": "0x2e1a7d4d00000000000000000000000000000000000000000000000014d1120d7b160000",
+        "to": "0x6c06b16512b332e6cd8293a2974872674716ce18",
+        "value": "0x0"
+      },
+      "blockNumber": 24974,
+      "result": {
+        "gasUsed": "0x72de",
+        "output": "0x"
+      },
+      "subtraces": 0,
+      "traceAddress": [],
+      "type": "call"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/nested_create.json

@@ -0,0 +1,94 @@
+{
+  "genesis": {
+    "difficulty": "1808543",
+    "extraData": "0xd883010906846765746888676f312e31332e35856c696e7578",
+    "gasLimit": "4875092",
+    "hash": "0x3851fdc18bd5f2314cf0c90439356f9a1fe157d7fb06c20e20b77954da903671",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+    "mixHash": "0x3d4e702d6058acf94c9547560f05536d45d515bd4f9014564ec41b5b4ff9578b",
+    "nonce": "0x1695153e7b16c1e7",
+    "number": "555461",
+    "stateRoot": "0xba8272acd0dfeb5f04376328e8bfc5b276b177697000c204a060f6f7b629ae32",
+    "timestamp": "1577423350",
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+        "nonce": "0",
+        "code": "0x",
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+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x16c102a3b09c02abdace",
+        "nonce": "19049",
+        "code": "0x",
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+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
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+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "555462",
+    "difficulty": "1808543",
+    "timestamp": "1577423360",
+    "gasLimit": "4873701",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
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+      "result": {
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+      "subtraces": 1,
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+      "transactionHash": "0xe267552ce8437a5bc7081385c99f912de5723ad34b958db215dbc41abd5f6c03",
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+      "blockHash": "0x38bba9e3965b57205097ea5ec53fc403cf3941bec2e4c933faae244de5ca4ba1",
+      "time": "1.147715ms"
+    },
+    {
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+      "action": {
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+      },
+      "result": {
+        "gasUsed": "0x1009d",
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+        "address": "0xcf5b3467dfa45cdc8e5358a7a1ba4deb02e5faed"
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+      "traceAddress": [0],
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+      "transactionHash": "0xe267552ce8437a5bc7081385c99f912de5723ad34b958db215dbc41abd5f6c03",
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+      "blockHash": "0x38bba9e3965b57205097ea5ec53fc403cf3941bec2e4c933faae244de5ca4ba1"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/nested_create2_action_gas.json

@@ -0,0 +1,94 @@
+{
+  "genesis": {
+    "difficulty": "4635413",
+    "extraData": "0xd683010b05846765746886676f312e3133856c696e7578",
+    "gasLimit": "9289294",
+    "hash": "0x359775cf1a2ae2400e26ec68bf33bcfe38b7979c76b7e616f42c4ca7e7605e39",
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+    "mixHash": "0x4b2a0ef121a9c7d732fa0fbd4166a0e1041d2da2b8cb677c61edabf8b7183b64",
+    "nonce": "0x2a8a64ad9757be55",
+    "number": "1555160",
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+    "timestamp": "1590793999",
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+    "alloc": {
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+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "1555161",
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+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
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+  "result": [
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+        "value": "0x0",
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+      "time": "889.048µs"
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+    {
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+        "value": "0x0",
+        "gas": "0x5117",
+        "init": "0x"
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+      "result": {
+        "gasUsed": "0x0",
+        "code": "0x",
+        "address": "0x8785e369f0ef0a4e5c5a5f929680427dc75273a5"
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+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/nested_create_action_gas.json

@@ -0,0 +1,90 @@
+{
+  "genesis": {
+    "difficulty": "4639933",
+    "extraData": "0xd883010b05846765746888676f312e31342e33856c696e7578",
+    "gasLimit": "9280188",
+    "hash": "0x9a5f3a98eb1c60f6e3f450658a9cea190157e7021d04f927b752ad6482cf9194",
+    "miner": "0x73f26d124436b0791169d63a3af29c2ae47765a3",
+    "mixHash": "0x6b6f8fcaa54b8565c4c1ae7cf0a020e938a53007f4561e758b17bc05c9044d78",
+    "nonce": "0x773aba50dc51b462",
+    "number": "1555169",
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+    "timestamp": "1590794111",
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+        "nonce": "260875",
+        "code": "0x",
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+      "petersburgBlock": 999983,
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+  },
+  "context": {
+    "number": "1555170",
+    "difficulty": "4642198",
+    "timestamp": "1590794112",
+    "gasLimit": "9289249",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
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+  "result": [
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+        "value": "0x0",
+        "gas": "0xcf08",
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+      "error": "out of gas",
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+      "time": "952.736µs"
+    },
+    {
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+      "action": {
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+        "value": "0x0",
+        "gas": "0x3cb",
+        "init": "0x"
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+      "result": {
+        "gasUsed": "0x0",
+        "code": "0x",
+        "address": "0x5ac5599fc9df172c89ee7ec55ad9104ccbfed40d"
+      },
+      "traceAddress": [0],
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+      "blockHash": "0xea46fbf941d51bf1e4180fbf26d22fda3896f49c7f371d109c226de95dd7b02e"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/nested_create_inerror.json

@@ -0,0 +1,81 @@
+{
+  "genesis": {
+    "difficulty": "3244991",
+    "extraData": "0x",
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+    "hash": "0x62bbf18c203068a8793af8d8360d054f95a63bc62b87ade550861ed490af3f15",
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+    "timestamp": "1581179375",
+    "totalDifficulty": "1023985623933",
+    "alloc": {
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+      "0xed69ab7145a9bae7152406d062c077c6ecc6ae18": {
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+      "0xa3b31cbd5168d3c99756660d4b7625d679e12573": {
+        "balance": "0x569bc6535d3083fce",
+        "nonce": "26",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
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+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "839247",
+    "difficulty": "3213311",
+    "timestamp": "1581179571",
+    "gasLimit": "7961006",
+    "miner": "0x9f2659ffe7b3b467e46dcec3623392cf51635079"
+  },
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+  "result": [
+    {
+      "type": "call",
+      "action": {
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+        "to": "0x76554b33410b6d90b7dc889bfed0451ad195f27e",
+        "value": "0x0",
+        "gas": "0x2e138",
+        "input": "0x391521f4",
+        "callType": "call"
+      },
+      "result": {
+        "gasUsed": "0xd0b5",
+        "output": "0x"
+      },
+      "traceAddress": [],
+      "subtraces": 0,
+      "transactionPosition": 26,
+      "transactionHash": "0xcb1090fa85d2a3da8326b75333e92b3dca89963c895d9c981bfdaa64643135e4",
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+      "time": "182.267µs"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/result_output.json

@@ -0,0 +1,111 @@
+{
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+    "mixHash": "0xc102ad52677c391edab82cc895ca7a7e9fff3eed4fa966ecf7fb61ec1e84bb6b",
+    "nonce": "0x39f5b074e3437f3f",
+    "number": "553415",
+    "stateRoot": "0x8f89e79109c19fa00e72b400502448540dc4773ad92dddd341dbba20c710a3b5",
+    "timestamp": "1577396195",
+    "totalDifficulty": "458361299240",
+    "alloc": {
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+          "0x0000000000000000000000000000000000000000000000000000000000000004": "0x0000000000000000000000000000000000000000000000000de0b6b3a7640000"
+        }
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+      "0xb49180d443dc4ca6028de0031ac09337891fd8ce": {
+        "balance": "0x0",
+        "nonce": "0",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x193e9986e2e3f0c58988",
+        "nonce": "2585",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
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+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "553416",
+    "difficulty": "1909336",
+    "timestamp": "1577396224",
+    "gasLimit": "7835218",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+  },
+  "input": "0xf870820a1985e8d4a5100083040b2894531f76bad925f6a925474996c7d738c1008045f6880de0b6b3a76400008081a2a08693170f040d9501b831b404d9e40fba040c5aef4b8974aedc20b3844aea7c32a0476861058ff9b8030c58bcba8be320acc855e4694a633c493fb50fbdb9455489",
+  "result": [
+    {
+      "type": "call",
+      "action": {
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "to": "0x531f76bad925f6a925474996c7d738c1008045f6",
+        "value": "0xde0b6b3a7640000",
+        "gas": "0x3b920",
+        "input": "0x",
+        "callType": "call"
+      },
+      "result": {
+        "gasUsed": "0x19c3e",
+        "output": "0x"
+      },
+      "traceAddress": [],
+      "subtraces": 1,
+      "transactionPosition": 5,
+      "transactionHash": "0x04d2029a5cbbed30969cdc0a2ca9e9fc6b719e323af0802b52466f07ee0ecada",
+      "blockNumber": 553416,
+      "blockHash": "0x8df024322173d225a09681d35edeaa528aca60743a11a70f854c158862bf5282",
+      "time": "617.42µs"
+    },
+    {
+      "type": "call",
+      "action": {
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+        "to": "0xb49180d443dc4ca6028de0031ac09337891fd8ce",
+        "value": "0x0",
+        "gas": "0x2164e",
+        "input": "0x90b98a11000000000000000000000000877bd459c9b7d8576b44e59e09d076c25946f4430000000000000000000000000000000000000000000000000000000000000001",
+        "callType": "call"
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+      "result": {
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+        "output": "0x"
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+      "traceAddress": [
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+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/revert.json

@@ -0,0 +1,68 @@
+{
+  "context": {
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+    "gasLimit": "5232723",
+    "miner": "0xf4d8e706cfb25c0decbbdd4d2e2cc10c66376a3f",
+    "number": "2294501",
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+      "ethash": {},
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+    "difficulty": "3672229776",
+    "extraData": "0x4554482e45544846414e532e4f52472d4641313738394444",
+    "gasLimit": "5227619",
+    "hash": "0xa07b3d6c6bf63f5f981016db9f2d1d93033833f2c17e8bf7209e85f1faf08076",
+    "miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3",
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+    "nonce": "0xbc5d43adc2c30c7d",
+    "number": "2294500",
+    "stateRoot": "0xca645b335888352ef9d8b1ef083e9019648180b259026572e3139717270de97d",
+    "timestamp": "1513673552",
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+  "result": [
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+        "gas": "0x2d55e8",
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+        "value": "0x0"
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+      "error": "execution reverted",
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+      "subtraces": 0,
+      "traceAddress": [],
+      "type": "call"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/selfdestruct.json

@@ -0,0 +1,91 @@
+{
+  "genesis": {
+    "difficulty": "4628640",
+    "extraData": "0xd883010b05846765746888676f312e31342e33856c696e7578",
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+    "nonce": "0x7c35e34d2e328d7d",
+    "number": "1555145",
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+    "timestamp": "1590793819",
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+        "nonce": "260140",
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+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
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+  },
+  "context": {
+    "number": "1555146",
+    "difficulty": "4630900",
+    "timestamp": "1590793820",
+    "gasLimit": "9253146",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
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+      "time": "187.145µs"
+    },
+    {
+      "type": "suicide",
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+        "refundAddress": "0x0000000000000000000000000000000000000000",
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+      "transactionHash": "0xdd76f02407e2f8329303ba688e111cae4f7008ad0d14d6e42c5698424ea36d79",
+      "blockNumber": 1555146,
+      "blockHash": "0xafb4f1dd27b9054c805acb81a88ed04384788cb31d84164c21874935c81e5c7e"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/simple.json

@@ -0,0 +1,97 @@
+{
+  "context": {
+    "difficulty": "3502894804",
+    "gasLimit": "4722976",
+    "miner": "0x1585936b53834b021f68cc13eeefdec2efc8e724",
+    "number": "2289806",
+    "timestamp": "1513601314"
+  },
+  "genesis": {
+    "alloc": {
+      "0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5": {
+        "balance": "0x0",
+        "code": "0x",
+        "nonce": "22",
+        "storage": {}
+      },
+      "0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
+        "balance": "0x4d87094125a369d9bd5",
+        "code": "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",
+        "nonce": "1",
+        "storage": {
+          "0x0000000000000000000000000000000000000000000000000000000000000000": "0x000000000000000000000001b436ba50d378d4bbc8660d312a13df6af6e89dfb",
+          "0x0000000000000000000000000000000000000000000000000000000000000001": "0x00000000000000000000000000000000000000000000000006f05b59d3b20000",
+          "0x0000000000000000000000000000000000000000000000000000000000000002": "0x000000000000000000000000000000000000000000000000000000000000003c",
+          "0x0000000000000000000000000000000000000000000000000000000000000003": "0x000000000000000000000000000000000000000000000000000000005a37b834"
+        }
+      },
+      "0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": {
+        "balance": "0x1780d77678137ac1b775",
+        "code": "0x",
+        "nonce": "29072",
+        "storage": {}
+      }
+    },
+    "config": {
+      "byzantiumBlock": 1700000,
+      "chainId": 3,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 10,
+      "eip158Block": 10,
+      "ethash": {},
+      "homesteadBlock": 0
+    },
+    "difficulty": "3509749784",
+    "extraData": "0x4554482e45544846414e532e4f52472d4641313738394444",
+    "gasLimit": "4727564",
+    "hash": "0x609948ac3bd3c00b7736b933248891d6c901ee28f066241bddb28f4e00a9f440",
+    "miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3",
+    "mixHash": "0xb131e4507c93c7377de00e7c271bf409ec7492767142ff0f45c882f8068c2ada",
+    "nonce": "0x4eb12e19c16d43da",
+    "number": "2289805",
+    "stateRoot": "0xc7f10f352bff82fac3c2999d3085093d12652e19c7fd32591de49dc5d91b4f1f",
+    "timestamp": "1513601261",
+    "totalDifficulty": "7143276353481064"
+  },
+  "input": "0xf88b8271908506fc23ac0083015f90943b873a919aa0512d5a0f09e6dcceaa4a6727fafe80a463e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c52aa0bdce0b59e8761854e857fe64015f06dd08a4fbb7624f6094893a79a72e6ad6bea01d9dde033cff7bb235a3163f348a6d7ab8d6b52bc0963a95b91612e40ca766a4",
+  "result": [
+    {
+      "action": {
+        "callType": "call",
+        "from": "0xb436ba50d378d4bbc8660d312a13df6af6e89dfb",
+        "gas": "0x10738",
+        "input": "0x63e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c5",
+        "to": "0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe",
+        "value": "0x0"
+      },
+      "blockNumber": 2289806,
+      "result": {
+        "gasUsed": "0x9751",
+        "output": "0x0000000000000000000000000000000000000000000000000000000000000001"
+      },
+      "subtraces": 1,
+      "traceAddress": [],
+      "type": "call"
+    },
+    {
+      "action": {
+        "callType": "call",
+        "from": "0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe",
+        "gas": "0x6d05",
+        "input": "0x",
+        "to": "0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5",
+        "value": "0x6f05b59d3b20000"
+      },
+      "blockNumber": 0,
+      "result": {
+        "gasUsed": "0x0",
+        "output": "0x"
+      },
+      "subtraces": 0,
+      "traceAddress": [0],
+      "type": "call"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/skip_no_balance_error.json

@@ -0,0 +1,70 @@
+{
+  "genesis": {
+    "difficulty": "4673862",
+    "extraData": "0xd683010b05846765746886676f312e3133856c696e7578",
+    "gasLimit": "9471919",
+    "hash": "0x7f072150c5905c214966e3432d418910badcdbe510aceaac295b1d7059cc0ffc",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+    "mixHash": "0x113ced8fedb939fdc862008da7bdddde726f997c0e6dfba0e55613994757b489",
+    "nonce": "0x0f411a2e5552c5b7",
+    "number": "1555284",
+    "stateRoot": "0x9fe125b361b72d5479b24ad9be9964b74228c73a2dfb0065060a79b4a6dfaa1e",
+    "timestamp": "1590795374",
+    "totalDifficulty": "2242642335405",
+    "alloc": {
+      "0xe85df1413eebe1b191c26260e19783a274a6b041": {
+        "balance": "0x0",
+        "nonce": "0",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x6244c985ef1e48e84531",
+        "nonce": "265775",
+        "code": "0x",
+        "storage": {}
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "1555285",
+    "difficulty": "4676144",
+    "timestamp": "1590795378",
+    "gasLimit": "9481167",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+  },
+  "input": "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",
+  "result": [
+    {
+      "type": "create",
+      "action": {
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "value": "0x0",
+        "gas": "0xd550",
+        "init": "0x7f000000000000000000000000945304eb96065b2a98b57a48a06ae28d285a71b57f000000000000000000000000000000000000000000000000000000000000c3507f000000000000000000000000945304eb96065b2a98b57a48a06ae28d285a71b5547f000000000000000000000000000000000000000000000000000000000000c3507f000000000000000000000000000000000000000000000000000000000000c3507f00000000000000000000000000000000000000000000000000000000000000007f000000000000000000000000000000000000000000000000000000000000000037f055"
+      },
+      "error": "out of gas",
+      "traceAddress": [],
+      "subtraces": 0,
+      "transactionPosition": 16,
+      "transactionHash": "0x384487e5ae8d2997aece8e28403d393cb9752425e6de358891bed981c5af1c05",
+      "blockNumber": 1555285,
+      "blockHash": "0x93231d8e9662adb4c5c703583a92c7b3112cd5448f43ab4fa1f0f00a0183ed3f",
+      "time": "665.278µs"
+    }
+  ]
+}

eth/tracers/internal/tracetest/testdata/call_tracer_flat/suicide.json

@@ -0,0 +1,92 @@
+{
+  "genesis": {
+    "number": "553153",
+    "hash": "0x88bde20840880a1f3fba92121912a3cc0d3b26d76e4d914fbd85fc2e43da3b3f",
+    "nonce": "0x7be554ffe4b82fc2",
+    "mixHash": "0xf73d2ff3c16599c3b8a24b9ebde6c09583b5ee3f747d3cd37845d564f4c8d87a",
+    "stateRoot": "0x40b5f53d610108947688a04fb68838ff9c0aa0dd6e54156b682537192171ff5c",
+    "miner": "0x774c398d763161f55b66a646f17edda4addad2ca",
+    "difficulty": "1928226",
+    "totalDifficulty": "457857582215",
+    "extraData": "0xd983010907846765746888676f312e31332e358664617277696e",
+    "gasLimit": "7999473",
+    "timestamp": "1577392669",
+    "alloc": {
+      "0x877bd459c9b7d8576b44e59e09d076c25946f443": {
+        "balance": "0x19bb4ac611ca7a1fc881",
+        "nonce": "701",
+        "code": "0x",
+        "storage": {}
+      },
+      "0x8ee79c5b3f6e1d214d2c4fcf7ea4092a32e26e91": {
+        "balance": "0x0",
+        "nonce": "1",
+        "code": "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",
+        "storage": {
+          "0x0000000000000000000000000000000000000000000000000000000000000000": "0x000000000000000000000000877bd459c9b7d8576b44e59e09d076c25946f443"
+        }
+      }
+    },
+    "config": {
+      "chainId": 63,
+      "daoForkSupport": true,
+      "eip150Block": 0,
+      "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "ethash": {},
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "constantinopleBlock": 301243,
+      "petersburgBlock": 999983,
+      "istanbulBlock": 999983
+    }
+  },
+  "context": {
+    "number": "553154",
+    "difficulty": "1929167",
+    "timestamp": "1577392670",
+    "gasLimit": "8000000",
+    "miner": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+  },
+  "input": "0xf86c8202bd850ee6b280008344aa20948ee79c5b3f6e1d214d2c4fcf7ea4092a32e26e91808441c0e1b581a2a03f95ca5cdf7fd727630341c4c6aa1b64ccd9949bd9ecc72cfdd7ce17a2013a69a06d34795ef7fb0108a6dbee4ae0a1bdc48dcd2a4ee53bb6a33d45515af07bb9a8",
+  "result": [
+    {
+      "action": {
+        "callType": "call",
+        "from": "0x877bd459c9b7d8576b44e59e09d076c25946f443",
+        "gas": "0x445708",
+        "input": "0x41c0e1b5",
+        "to": "0x8ee79c5b3f6e1d214d2c4fcf7ea4092a32e26e91",
+        "value": "0x0"
+      },
+      "blockHash": "0xf641c3b0f82b07cd3a528adb9927dd83eeb4f1682e2bd523ed36888e0d82c9a9",
+      "blockNumber": 553154,
+      "result": {
+        "gasUsed": "0x347a",
+        "output": "0x"
+      },
+      "subtraces": 1,
+      "traceAddress": [],
+      "transactionHash": "0x6af0a5c3188ffacae4d340d4a17e14fdb5a54187683a80ef241bde248189882b",
+      "transactionPosition": 15,
+      "type": "call"
+    },
+    {
+      "action": {
+        "address": "0x8ee79c5b3f6e1d214d2c4fcf7ea4092a32e26e91",
+        "balance": "0x0",
+        "refundAddress": "0x877bd459c9b7d8576b44e59e09d076c25946f443"
+      },
+      "blockHash": "0xf641c3b0f82b07cd3a528adb9927dd83eeb4f1682e2bd523ed36888e0d82c9a9",
+      "blockNumber": 553154,
+      "subtraces": 0,
+      "traceAddress": [
+        0
+      ],
+      "transactionHash": "0x6af0a5c3188ffacae4d340d4a17e14fdb5a54187683a80ef241bde248189882b",
+      "transactionPosition": 15,
+      "type": "suicide"
+    }
+  ]
+}

eth/tracers/native/call.go

@@ -42,17 +42,17 @@ type callLog struct {
 }
 
 type callFrame struct {
-	Type         vm.OpCode      `json:"-"`
-	From         common.Address `json:"from"`
-	Gas          uint64         `json:"gas"`
-	GasUsed      uint64         `json:"gasUsed"`
-	To           common.Address `json:"to,omitempty" rlp:"optional"`
-	Input        []byte         `json:"input" rlp:"optional"`
-	Output       []byte         `json:"output,omitempty" rlp:"optional"`
-	Error        string         `json:"error,omitempty" rlp:"optional"`
-	RevertReason string         `json:"revertReason,omitempty"`
-	Calls        []callFrame    `json:"calls,omitempty" rlp:"optional"`
-	Logs         []callLog      `json:"logs,omitempty" rlp:"optional"`
+	Type         vm.OpCode       `json:"-"`
+	From         common.Address  `json:"from"`
+	Gas          uint64          `json:"gas"`
+	GasUsed      uint64          `json:"gasUsed"`
+	To           *common.Address `json:"to,omitempty" rlp:"optional"`
+	Input        []byte          `json:"input" rlp:"optional"`
+	Output       []byte          `json:"output,omitempty" rlp:"optional"`
+	Error        string          `json:"error,omitempty" rlp:"optional"`
+	RevertReason string          `json:"revertReason,omitempty"`
+	Calls        []callFrame     `json:"calls,omitempty" rlp:"optional"`
+	Logs         []callLog       `json:"logs,omitempty" rlp:"optional"`
 	// Placed at end on purpose. The RLP will be decoded to 0 instead of
 	// nil if there are non-empty elements after in the struct.
 	Value *big.Int `json:"value,omitempty" rlp:"optional"`
@@ -74,7 +74,7 @@ func (f *callFrame) processOutput(output []byte, err error) {
 	}
 	f.Error = err.Error()
 	if f.Type == vm.CREATE || f.Type == vm.CREATE2 {
-		f.To = common.Address{}
+		f.To = nil
 	}
 	if !errors.Is(err, vm.ErrExecutionReverted) || len(output) == 0 {
 		return
@@ -127,10 +127,11 @@ func newCallTracer(ctx *tracers.Context, cfg json.RawMessage) (tracers.Tracer, e
 
 // CaptureStart implements the EVMLogger interface to initialize the tracing operation.
 func (t *callTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
+	toCopy := to
 	t.callstack[0] = callFrame{
 		Type:  vm.CALL,
 		From:  from,
-		To:    to,
+		To:    &toCopy,
 		Input: common.CopyBytes(input),
 		Gas:   gas,
 		Value: value,
@@ -191,10 +192,11 @@ func (t *callTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.
 		return
 	}
 
+	toCopy := to
 	call := callFrame{
 		Type:  typ,
 		From:  from,
-		To:    to,
+		To:    &toCopy,
 		Input: common.CopyBytes(input),
 		Gas:   gas,
 		Value: value,
@@ -240,6 +242,7 @@ func (t *callTracer) GetResult() (json.RawMessage, error) {
 	if len(t.callstack) != 1 {
 		return nil, errors.New("incorrect number of top-level calls")
 	}
+
 	res, err := json.Marshal(t.callstack[0])
 	if err != nil {
 		return nil, err

eth/tracers/native/call_flat.go

@@ -0,0 +1,379 @@
+// Copyright 2022 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package native
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"math/big"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/eth/tracers"
+)
+
+//go:generate go run github.com/fjl/gencodec -type flatCallAction -field-override flatCallActionMarshaling -out gen_flatcallaction_json.go
+//go:generate go run github.com/fjl/gencodec -type flatCallResult -field-override flatCallResultMarshaling -out gen_flatcallresult_json.go
+
+func init() {
+	tracers.DefaultDirectory.Register("flatCallTracer", newFlatCallTracer, false)
+}
+
+var parityErrorMapping = map[string]string{
+	"contract creation code storage out of gas": "Out of gas",
+	"out of gas":                      "Out of gas",
+	"gas uint64 overflow":             "Out of gas",
+	"max code size exceeded":          "Out of gas",
+	"invalid jump destination":        "Bad jump destination",
+	"execution reverted":              "Reverted",
+	"return data out of bounds":       "Out of bounds",
+	"stack limit reached 1024 (1023)": "Out of stack",
+	"precompiled failed":              "Built-in failed",
+	"invalid input length":            "Built-in failed",
+}
+
+var parityErrorMappingStartingWith = map[string]string{
+	"invalid opcode:": "Bad instruction",
+	"stack underflow": "Stack underflow",
+}
+
+// flatCallFrame is a standalone callframe.
+type flatCallFrame struct {
+	Action              flatCallAction  `json:"action"`
+	BlockHash           *common.Hash    `json:"blockHash"`
+	BlockNumber         uint64          `json:"blockNumber"`
+	Error               string          `json:"error,omitempty"`
+	Result              *flatCallResult `json:"result,omitempty"`
+	Subtraces           int             `json:"subtraces"`
+	TraceAddress        []int           `json:"traceAddress"`
+	TransactionHash     *common.Hash    `json:"transactionHash"`
+	TransactionPosition uint64          `json:"transactionPosition"`
+	Type                string          `json:"type"`
+}
+
+type flatCallAction struct {
+	Author         *common.Address `json:"author,omitempty"`
+	RewardType     string          `json:"rewardType,omitempty"`
+	SelfDestructed *common.Address `json:"address,omitempty"`
+	Balance        *big.Int        `json:"balance,omitempty"`
+	CallType       string          `json:"callType,omitempty"`
+	CreationMethod string          `json:"creationMethod,omitempty"`
+	From           *common.Address `json:"from,omitempty"`
+	Gas            *uint64         `json:"gas,omitempty"`
+	Init           *[]byte         `json:"init,omitempty"`
+	Input          *[]byte         `json:"input,omitempty"`
+	RefundAddress  *common.Address `json:"refundAddress,omitempty"`
+	To             *common.Address `json:"to,omitempty"`
+	Value          *big.Int        `json:"value,omitempty"`
+}
+
+type flatCallActionMarshaling struct {
+	Balance *hexutil.Big
+	Gas     *hexutil.Uint64
+	Init    *hexutil.Bytes
+	Input   *hexutil.Bytes
+	Value   *hexutil.Big
+}
+
+type flatCallResult struct {
+	Address *common.Address `json:"address,omitempty"`
+	Code    *[]byte         `json:"code,omitempty"`
+	GasUsed *uint64         `json:"gasUsed,omitempty"`
+	Output  *[]byte         `json:"output,omitempty"`
+}
+
+type flatCallResultMarshaling struct {
+	Code    *hexutil.Bytes
+	GasUsed *hexutil.Uint64
+	Output  *hexutil.Bytes
+}
+
+// flatCallTracer reports call frame information of a tx in a flat format, i.e.
+// as opposed to the nested format of `callTracer`.
+type flatCallTracer struct {
+	tracer            *callTracer
+	config            flatCallTracerConfig
+	ctx               *tracers.Context // Holds tracer context data
+	reason            error            // Textual reason for the interruption
+	activePrecompiles []common.Address // Updated on CaptureStart based on given rules
+}
+
+type flatCallTracerConfig struct {
+	ConvertParityErrors bool `json:"convertParityErrors"` // If true, call tracer converts errors to parity format
+	IncludePrecompiles  bool `json:"includePrecompiles"`  // If true, call tracer includes calls to precompiled contracts
+}
+
+// newFlatCallTracer returns a new flatCallTracer.
+func newFlatCallTracer(ctx *tracers.Context, cfg json.RawMessage) (tracers.Tracer, error) {
+	var config flatCallTracerConfig
+	if cfg != nil {
+		if err := json.Unmarshal(cfg, &config); err != nil {
+			return nil, err
+		}
+	}
+
+	tracer, err := tracers.DefaultDirectory.New("callTracer", ctx, cfg)
+	if err != nil {
+		return nil, err
+	}
+	t, ok := tracer.(*callTracer)
+	if !ok {
+		return nil, errors.New("internal error: embedded tracer has wrong type")
+	}
+
+	return &flatCallTracer{tracer: t, ctx: ctx, config: config}, nil
+}
+
+// CaptureStart implements the EVMLogger interface to initialize the tracing operation.
+func (t *flatCallTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
+	t.tracer.CaptureStart(env, from, to, create, input, gas, value)
+	// Update list of precompiles based on current block
+	rules := env.ChainConfig().Rules(env.Context.BlockNumber, env.Context.Random != nil, env.Context.Time)
+	t.activePrecompiles = vm.ActivePrecompiles(rules)
+}
+
+// CaptureEnd is called after the call finishes to finalize the tracing.
+func (t *flatCallTracer) CaptureEnd(output []byte, gasUsed uint64, err error) {
+	t.tracer.CaptureEnd(output, gasUsed, err)
+}
+
+// CaptureState implements the EVMLogger interface to trace a single step of VM execution.
+func (t *flatCallTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
+	t.tracer.CaptureState(pc, op, gas, cost, scope, rData, depth, err)
+}
+
+// CaptureFault implements the EVMLogger interface to trace an execution fault.
+func (t *flatCallTracer) CaptureFault(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) {
+	t.tracer.CaptureFault(pc, op, gas, cost, scope, depth, err)
+}
+
+// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct).
+func (t *flatCallTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
+	t.tracer.CaptureEnter(typ, from, to, input, gas, value)
+
+	// Child calls must have a value, even if it's zero.
+	// Practically speaking, only STATICCALL has nil value. Set it to zero.
+	if t.tracer.callstack[len(t.tracer.callstack)-1].Value == nil && value == nil {
+		t.tracer.callstack[len(t.tracer.callstack)-1].Value = big.NewInt(0)
+	}
+}
+
+// CaptureExit is called when EVM exits a scope, even if the scope didn't
+// execute any code.
+func (t *flatCallTracer) CaptureExit(output []byte, gasUsed uint64, err error) {
+	t.tracer.CaptureExit(output, gasUsed, err)
+
+	// Parity traces don't include CALL/STATICCALLs to precompiles.
+	// By default we remove them from the callstack.
+	if t.config.IncludePrecompiles {
+		return
+	}
+	var (
+		// call has been nested in parent
+		parent = t.tracer.callstack[len(t.tracer.callstack)-1]
+		call   = parent.Calls[len(parent.Calls)-1]
+		typ    = call.Type
+		to     = call.To
+	)
+	if typ == vm.CALL || typ == vm.STATICCALL {
+		if t.isPrecompiled(*to) {
+			t.tracer.callstack[len(t.tracer.callstack)-1].Calls = parent.Calls[:len(parent.Calls)-1]
+		}
+	}
+}
+
+func (t *flatCallTracer) CaptureTxStart(gasLimit uint64) {
+	t.tracer.CaptureTxStart(gasLimit)
+}
+
+func (t *flatCallTracer) CaptureTxEnd(restGas uint64) {
+	t.tracer.CaptureTxEnd(restGas)
+}
+
+// GetResult returns an empty json object.
+func (t *flatCallTracer) GetResult() (json.RawMessage, error) {
+	if len(t.tracer.callstack) < 1 {
+		return nil, errors.New("invalid number of calls")
+	}
+
+	flat, err := flatFromNested(&t.tracer.callstack[0], []int{}, t.config.ConvertParityErrors, t.ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	res, err := json.Marshal(flat)
+	if err != nil {
+		return nil, err
+	}
+	return res, t.reason
+}
+
+// Stop terminates execution of the tracer at the first opportune moment.
+func (t *flatCallTracer) Stop(err error) {
+	t.tracer.Stop(err)
+}
+
+// isPrecompiled returns whether the addr is a precompile.
+func (t *flatCallTracer) isPrecompiled(addr common.Address) bool {
+	for _, p := range t.activePrecompiles {
+		if p == addr {
+			return true
+		}
+	}
+	return false
+}
+
+func flatFromNested(input *callFrame, traceAddress []int, convertErrs bool, ctx *tracers.Context) (output []flatCallFrame, err error) {
+	var frame *flatCallFrame
+	switch input.Type {
+	case vm.CREATE, vm.CREATE2:
+		frame = newFlatCreate(input)
+	case vm.SELFDESTRUCT:
+		frame = newFlatSuicide(input)
+	case vm.CALL, vm.STATICCALL, vm.CALLCODE, vm.DELEGATECALL:
+		frame = newFlatCall(input)
+	default:
+		return nil, fmt.Errorf("unrecognized call frame type: %s", input.Type)
+	}
+
+	frame.TraceAddress = traceAddress
+	frame.Error = input.Error
+	frame.Subtraces = len(input.Calls)
+	fillCallFrameFromContext(frame, ctx)
+	if convertErrs {
+		convertErrorToParity(frame)
+	}
+
+	// Revert output contains useful information (revert reason).
+	// Otherwise discard result.
+	if input.Error != "" && input.Error != vm.ErrExecutionReverted.Error() {
+		frame.Result = nil
+	}
+
+	output = append(output, *frame)
+	if len(input.Calls) > 0 {
+		for i, childCall := range input.Calls {
+			childAddr := childTraceAddress(traceAddress, i)
+			childCallCopy := childCall
+			flat, err := flatFromNested(&childCallCopy, childAddr, convertErrs, ctx)
+			if err != nil {
+				return nil, err
+			}
+			output = append(output, flat...)
+		}
+	}
+
+	return output, nil
+}
+
+func newFlatCreate(input *callFrame) *flatCallFrame {
+	var (
+		actionInit = input.Input[:]
+		resultCode = input.Output[:]
+	)
+
+	return &flatCallFrame{
+		Type: strings.ToLower(vm.CREATE.String()),
+		Action: flatCallAction{
+			From:  &input.From,
+			Gas:   &input.Gas,
+			Value: input.Value,
+			Init:  &actionInit,
+		},
+		Result: &flatCallResult{
+			GasUsed: &input.GasUsed,
+			Address: input.To,
+			Code:    &resultCode,
+		},
+	}
+}
+
+func newFlatCall(input *callFrame) *flatCallFrame {
+	var (
+		actionInput  = input.Input[:]
+		resultOutput = input.Output[:]
+	)
+
+	return &flatCallFrame{
+		Type: strings.ToLower(vm.CALL.String()),
+		Action: flatCallAction{
+			From:     &input.From,
+			To:       input.To,
+			Gas:      &input.Gas,
+			Value:    input.Value,
+			CallType: strings.ToLower(input.Type.String()),
+			Input:    &actionInput,
+		},
+		Result: &flatCallResult{
+			GasUsed: &input.GasUsed,
+			Output:  &resultOutput,
+		},
+	}
+}
+
+func newFlatSuicide(input *callFrame) *flatCallFrame {
+	return &flatCallFrame{
+		Type: "suicide",
+		Action: flatCallAction{
+			SelfDestructed: &input.From,
+			Balance:        input.Value,
+			RefundAddress:  input.To,
+		},
+	}
+}
+
+func fillCallFrameFromContext(callFrame *flatCallFrame, ctx *tracers.Context) {
+	if ctx == nil {
+		return
+	}
+	if ctx.BlockHash != (common.Hash{}) {
+		callFrame.BlockHash = &ctx.BlockHash
+	}
+	if ctx.BlockNumber != nil {
+		callFrame.BlockNumber = ctx.BlockNumber.Uint64()
+	}
+	if ctx.TxHash != (common.Hash{}) {
+		callFrame.TransactionHash = &ctx.TxHash
+	}
+	callFrame.TransactionPosition = uint64(ctx.TxIndex)
+}
+
+func convertErrorToParity(call *flatCallFrame) {
+	if call.Error == "" {
+		return
+	}
+
+	if parityError, ok := parityErrorMapping[call.Error]; ok {
+		call.Error = parityError
+	} else {
+		for gethError, parityError := range parityErrorMappingStartingWith {
+			if strings.HasPrefix(call.Error, gethError) {
+				call.Error = parityError
+			}
+		}
+	}
+}
+
+func childTraceAddress(a []int, i int) []int {
+	child := make([]int, 0, len(a)+1)
+	child = append(child, a...)
+	child = append(child, i)
+	return child
+}

eth/tracers/native/gen_callframe_json.go

@@ -16,19 +16,19 @@ var _ = (*callFrameMarshaling)(nil)
 // MarshalJSON marshals as JSON.
 func (c callFrame) MarshalJSON() ([]byte, error) {
 	type callFrame0 struct {
-		Type         vm.OpCode      `json:"-"`
-		From         common.Address `json:"from"`
-		Gas          hexutil.Uint64 `json:"gas"`
-		GasUsed      hexutil.Uint64 `json:"gasUsed"`
-		To           common.Address `json:"to,omitempty" rlp:"optional"`
-		Input        hexutil.Bytes  `json:"input" rlp:"optional"`
-		Output       hexutil.Bytes  `json:"output,omitempty" rlp:"optional"`
-		Error        string         `json:"error,omitempty" rlp:"optional"`
-		RevertReason string         `json:"revertReason,omitempty"`
-		Calls        []callFrame    `json:"calls,omitempty" rlp:"optional"`
-		Logs         []callLog      `json:"logs,omitempty" rlp:"optional"`
-		Value        *hexutil.Big   `json:"value,omitempty" rlp:"optional"`
-		TypeString   string         `json:"type"`
+		Type         vm.OpCode       `json:"-"`
+		From         common.Address  `json:"from"`
+		Gas          hexutil.Uint64  `json:"gas"`
+		GasUsed      hexutil.Uint64  `json:"gasUsed"`
+		To           *common.Address `json:"to,omitempty" rlp:"optional"`
+		Input        hexutil.Bytes   `json:"input" rlp:"optional"`
+		Output       hexutil.Bytes   `json:"output,omitempty" rlp:"optional"`
+		Error        string          `json:"error,omitempty" rlp:"optional"`
+		RevertReason string          `json:"revertReason,omitempty"`
+		Calls        []callFrame     `json:"calls,omitempty" rlp:"optional"`
+		Logs         []callLog       `json:"logs,omitempty" rlp:"optional"`
+		Value        *hexutil.Big    `json:"value,omitempty" rlp:"optional"`
+		TypeString   string          `json:"type"`
 	}
 	var enc callFrame0
 	enc.Type = c.Type
@@ -80,7 +80,7 @@ func (c *callFrame) UnmarshalJSON(input []byte) error {
 		c.GasUsed = uint64(*dec.GasUsed)
 	}
 	if dec.To != nil {
-		c.To = *dec.To
+		c.To = dec.To
 	}
 	if dec.Input != nil {
 		c.Input = *dec.Input

eth/tracers/native/gen_flatcallaction_json.go

@@ -0,0 +1,110 @@
+// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
+
+package native
+
+import (
+	"encoding/json"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+)
+
+var _ = (*flatCallActionMarshaling)(nil)
+
+// MarshalJSON marshals as JSON.
+func (f flatCallAction) MarshalJSON() ([]byte, error) {
+	type flatCallAction struct {
+		Author         *common.Address `json:"author,omitempty"`
+		RewardType     string          `json:"rewardType,omitempty"`
+		SelfDestructed *common.Address `json:"address,omitempty"`
+		Balance        *hexutil.Big    `json:"balance,omitempty"`
+		CallType       string          `json:"callType,omitempty"`
+		CreationMethod string          `json:"creationMethod,omitempty"`
+		From           *common.Address `json:"from,omitempty"`
+		Gas            *hexutil.Uint64 `json:"gas,omitempty"`
+		Init           *hexutil.Bytes  `json:"init,omitempty"`
+		Input          *hexutil.Bytes  `json:"input,omitempty"`
+		RefundAddress  *common.Address `json:"refundAddress,omitempty"`
+		To             *common.Address `json:"to,omitempty"`
+		Value          *hexutil.Big    `json:"value,omitempty"`
+	}
+	var enc flatCallAction
+	enc.Author = f.Author
+	enc.RewardType = f.RewardType
+	enc.SelfDestructed = f.SelfDestructed
+	enc.Balance = (*hexutil.Big)(f.Balance)
+	enc.CallType = f.CallType
+	enc.CreationMethod = f.CreationMethod
+	enc.From = f.From
+	enc.Gas = (*hexutil.Uint64)(f.Gas)
+	enc.Init = (*hexutil.Bytes)(f.Init)
+	enc.Input = (*hexutil.Bytes)(f.Input)
+	enc.RefundAddress = f.RefundAddress
+	enc.To = f.To
+	enc.Value = (*hexutil.Big)(f.Value)
+	return json.Marshal(&enc)
+}
+
+// UnmarshalJSON unmarshals from JSON.
+func (f *flatCallAction) UnmarshalJSON(input []byte) error {
+	type flatCallAction struct {
+		Author         *common.Address `json:"author,omitempty"`
+		RewardType     *string         `json:"rewardType,omitempty"`
+		SelfDestructed *common.Address `json:"address,omitempty"`
+		Balance        *hexutil.Big    `json:"balance,omitempty"`
+		CallType       *string         `json:"callType,omitempty"`
+		CreationMethod *string         `json:"creationMethod,omitempty"`
+		From           *common.Address `json:"from,omitempty"`
+		Gas            *hexutil.Uint64 `json:"gas,omitempty"`
+		Init           *hexutil.Bytes  `json:"init,omitempty"`
+		Input          *hexutil.Bytes  `json:"input,omitempty"`
+		RefundAddress  *common.Address `json:"refundAddress,omitempty"`
+		To             *common.Address `json:"to,omitempty"`
+		Value          *hexutil.Big    `json:"value,omitempty"`
+	}
+	var dec flatCallAction
+	if err := json.Unmarshal(input, &dec); err != nil {
+		return err
+	}
+	if dec.Author != nil {
+		f.Author = dec.Author
+	}
+	if dec.RewardType != nil {
+		f.RewardType = *dec.RewardType
+	}
+	if dec.SelfDestructed != nil {
+		f.SelfDestructed = dec.SelfDestructed
+	}
+	if dec.Balance != nil {
+		f.Balance = (*big.Int)(dec.Balance)
+	}
+	if dec.CallType != nil {
+		f.CallType = *dec.CallType
+	}
+	if dec.CreationMethod != nil {
+		f.CreationMethod = *dec.CreationMethod
+	}
+	if dec.From != nil {
+		f.From = dec.From
+	}
+	if dec.Gas != nil {
+		f.Gas = (*uint64)(dec.Gas)
+	}
+	if dec.Init != nil {
+		f.Init = (*[]byte)(dec.Init)
+	}
+	if dec.Input != nil {
+		f.Input = (*[]byte)(dec.Input)
+	}
+	if dec.RefundAddress != nil {
+		f.RefundAddress = dec.RefundAddress
+	}
+	if dec.To != nil {
+		f.To = dec.To
+	}
+	if dec.Value != nil {
+		f.Value = (*big.Int)(dec.Value)
+	}
+	return nil
+}

eth/tracers/native/gen_flatcallresult_json.go

@@ -0,0 +1,55 @@
+// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
+
+package native
+
+import (
+	"encoding/json"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+)
+
+var _ = (*flatCallResultMarshaling)(nil)
+
+// MarshalJSON marshals as JSON.
+func (f flatCallResult) MarshalJSON() ([]byte, error) {
+	type flatCallResult struct {
+		Address *common.Address `json:"address,omitempty"`
+		Code    *hexutil.Bytes  `json:"code,omitempty"`
+		GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"`
+		Output  *hexutil.Bytes  `json:"output,omitempty"`
+	}
+	var enc flatCallResult
+	enc.Address = f.Address
+	enc.Code = (*hexutil.Bytes)(f.Code)
+	enc.GasUsed = (*hexutil.Uint64)(f.GasUsed)
+	enc.Output = (*hexutil.Bytes)(f.Output)
+	return json.Marshal(&enc)
+}
+
+// UnmarshalJSON unmarshals from JSON.
+func (f *flatCallResult) UnmarshalJSON(input []byte) error {
+	type flatCallResult struct {
+		Address *common.Address `json:"address,omitempty"`
+		Code    *hexutil.Bytes  `json:"code,omitempty"`
+		GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"`
+		Output  *hexutil.Bytes  `json:"output,omitempty"`
+	}
+	var dec flatCallResult
+	if err := json.Unmarshal(input, &dec); err != nil {
+		return err
+	}
+	if dec.Address != nil {
+		f.Address = dec.Address
+	}
+	if dec.Code != nil {
+		f.Code = (*[]byte)(dec.Code)
+	}
+	if dec.GasUsed != nil {
+		f.GasUsed = (*uint64)(dec.GasUsed)
+	}
+	if dec.Output != nil {
+		f.Output = (*[]byte)(dec.Output)
+	}
+	return nil
+}

eth/tracers/tracers.go

@@ -19,6 +19,7 @@ package tracers
 
 import (
 	"encoding/json"
+	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/vm"
@@ -27,9 +28,10 @@ import (
 // Context contains some contextual infos for a transaction execution that is not
 // available from within the EVM object.
 type Context struct {
-	BlockHash common.Hash // Hash of the block the tx is contained within (zero if dangling tx or call)
-	TxIndex   int         // Index of the transaction within a block (zero if dangling tx or call)
-	TxHash    common.Hash // Hash of the transaction being traced (zero if dangling call)
+	BlockHash   common.Hash // Hash of the block the tx is contained within (zero if dangling tx or call)
+	BlockNumber *big.Int    // Number of the block the tx is contained within (zero if dangling tx or call)
+	TxIndex     int         // Index of the transaction within a block (zero if dangling tx or call)
+	TxHash      common.Hash // Hash of the transaction being traced (zero if dangling call)
 }
 
 // Tracer interface extends vm.EVMLogger and additionally