all: remove debug-field from vm config (#27048)

This PR removes the Debug field from vmconfig, making it so that if a tracer is set, debug=true is implied.

---------

Co-authored-by: 0xTylerHolmes <tyler@ethereum.org>
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>

cmd/evm/internal/t8ntool/execution.go

@@ -174,7 +174,6 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
 			return nil, nil, err
 		}
 		vmConfig.Tracer = tracer
-		vmConfig.Debug = (tracer != nil)
 		statedb.SetTxContext(tx.Hash(), txIndex)
 
 		var (

cmd/evm/internal/t8ntool/transition.go

@@ -180,7 +180,6 @@ func Transition(ctx *cli.Context) error {
 
 	vmConfig := vm.Config{
 		Tracer: tracer,
-		Debug:  (tracer != nil),
 	}
 	// Construct the chainconfig
 	var chainConfig *params.ChainConfig

cmd/evm/runner.go

@@ -218,7 +218,6 @@ func runCmd(ctx *cli.Context) error {
 		BlockNumber: new(big.Int).SetUint64(genesisConfig.Number),
 		EVMConfig: vm.Config{
 			Tracer: tracer,
-			Debug:  ctx.Bool(DebugFlag.Name) || ctx.Bool(MachineFlag.Name),
 		},
 	}
 

cmd/evm/staterunner.go

@@ -92,7 +92,6 @@ func stateTestCmd(ctx *cli.Context) error {
 	// Iterate over all the tests, run them and aggregate the results
 	cfg := vm.Config{
 		Tracer: tracer,
-		Debug:  ctx.Bool(DebugFlag.Name) || ctx.Bool(MachineFlag.Name),
 	}
 	results := make([]StatetestResult, 0, len(tests))
 	for key, test := range tests {

core/blockchain.go

@@ -233,7 +233,6 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 	if cacheConfig == nil {
 		cacheConfig = defaultCacheConfig
 	}
-
 	// Open trie database with provided config
 	triedb := trie.NewDatabaseWithConfig(db, &trie.Config{
 		Cache:     cacheConfig.TrieCleanLimit,

core/blockchain_test.go

@@ -3024,7 +3024,6 @@ func TestDeleteRecreateSlots(t *testing.T) {
 	})
 	// Import the canonical chain
 	chain, err := NewBlockChain(rawdb.NewMemoryDatabase(), nil, gspec, nil, engine, vm.Config{
-		Debug:  true,
 		Tracer: logger.NewJSONLogger(nil, os.Stdout),
 	}, nil, nil)
 	if err != nil {
@@ -3102,7 +3101,6 @@ func TestDeleteRecreateAccount(t *testing.T) {
 	})
 	// Import the canonical chain
 	chain, err := NewBlockChain(rawdb.NewMemoryDatabase(), nil, gspec, nil, engine, vm.Config{
-		Debug:  true,
 		Tracer: logger.NewJSONLogger(nil, os.Stdout),
 	}, nil, nil)
 	if err != nil {

core/state_transition.go

@@ -324,10 +324,10 @@ func (st *StateTransition) TransitionDb() (*ExecutionResult, error) {
 		return nil, err
 	}
 
-	if st.evm.Config.Debug {
+	if tracer := st.evm.Config.Tracer; tracer != nil {
-		st.evm.Config.Tracer.CaptureTxStart(st.initialGas)
+		tracer.CaptureTxStart(st.initialGas)
 		defer func() {
-			st.evm.Config.Tracer.CaptureTxEnd(st.gasRemaining)
+			tracer.CaptureTxEnd(st.gasRemaining)
 		}()
 	}
 

core/vm/evm.go

@@ -182,11 +182,12 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 	}
 	snapshot := evm.StateDB.Snapshot()
 	p, isPrecompile := evm.precompile(addr)
+	debug := evm.Config.Tracer != nil
 
 	if !evm.StateDB.Exist(addr) {
 		if !isPrecompile && evm.chainRules.IsEIP158 && value.Sign() == 0 {
 			// Calling a non existing account, don't do anything, but ping the tracer
-			if evm.Config.Debug {
+			if debug {
 				if evm.depth == 0 {
 					evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value)
 					evm.Config.Tracer.CaptureEnd(ret, 0, nil)
@@ -202,7 +203,7 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 	evm.Context.Transfer(evm.StateDB, caller.Address(), addr, value)
 
 	// Capture the tracer start/end events in debug mode
-	if evm.Config.Debug {
+	if debug {
 		if evm.depth == 0 {
 			evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value)
 			defer func(startGas uint64) { // Lazy evaluation of the parameters
@@ -272,7 +273,7 @@ func (evm *EVM) CallCode(caller ContractRef, addr common.Address, input []byte,
 	var snapshot = evm.StateDB.Snapshot()
 
 	// Invoke tracer hooks that signal entering/exiting a call frame
-	if evm.Config.Debug {
+	if evm.Config.Tracer != nil {
 		evm.Config.Tracer.CaptureEnter(CALLCODE, caller.Address(), addr, input, gas, value)
 		defer func(startGas uint64) {
 			evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
@@ -313,7 +314,7 @@ func (evm *EVM) DelegateCall(caller ContractRef, addr common.Address, input []by
 	var snapshot = evm.StateDB.Snapshot()
 
 	// Invoke tracer hooks that signal entering/exiting a call frame
-	if evm.Config.Debug {
+	if evm.Config.Tracer != nil {
 		// NOTE: caller must, at all times be a contract. It should never happen
 		// that caller is something other than a Contract.
 		parent := caller.(*Contract)
@@ -367,7 +368,7 @@ func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte
 	evm.StateDB.AddBalance(addr, big0)
 
 	// Invoke tracer hooks that signal entering/exiting a call frame
-	if evm.Config.Debug {
+	if evm.Config.Tracer != nil {
 		evm.Config.Tracer.CaptureEnter(STATICCALL, caller.Address(), addr, input, gas, nil)
 		defer func(startGas uint64) {
 			evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
@@ -450,7 +451,7 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
 	contract := NewContract(caller, AccountRef(address), value, gas)
 	contract.SetCodeOptionalHash(&address, codeAndHash)
 
-	if evm.Config.Debug {
+	if evm.Config.Tracer != nil {
 		if evm.depth == 0 {
 			evm.Config.Tracer.CaptureStart(evm, caller.Address(), address, true, codeAndHash.code, gas, value)
 		} else {
@@ -493,7 +494,7 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
 		}
 	}
 
-	if evm.Config.Debug {
+	if evm.Config.Tracer != nil {
 		if evm.depth == 0 {
 			evm.Config.Tracer.CaptureEnd(ret, gas-contract.Gas, err)
 		} else {

core/vm/instructions.go

@@ -822,9 +822,9 @@ func opSelfdestruct(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext
 	balance := interpreter.evm.StateDB.GetBalance(scope.Contract.Address())
 	interpreter.evm.StateDB.AddBalance(beneficiary.Bytes20(), balance)
 	interpreter.evm.StateDB.Suicide(scope.Contract.Address())
-	if interpreter.evm.Config.Debug {
+	if tracer := interpreter.evm.Config.Tracer; tracer != nil {
-		interpreter.evm.Config.Tracer.CaptureEnter(SELFDESTRUCT, scope.Contract.Address(), beneficiary.Bytes20(), []byte{}, 0, balance)
+		tracer.CaptureEnter(SELFDESTRUCT, scope.Contract.Address(), beneficiary.Bytes20(), []byte{}, 0, balance)
-		interpreter.evm.Config.Tracer.CaptureExit([]byte{}, 0, nil)
+		tracer.CaptureExit([]byte{}, 0, nil)
 	}
 	return nil, errStopToken
 }

core/vm/interpreter.go

@@ -25,7 +25,6 @@ import (
 
 // Config are the configuration options for the Interpreter
 type Config struct {
-	Debug                   bool      // Enables debugging
 	Tracer                  EVMLogger // Opcode logger
 	NoBaseFee               bool      // Forces the EIP-1559 baseFee to 0 (needed for 0 price calls)
 	EnablePreimageRecording bool      // Enables recording of SHA3/keccak preimages
@@ -143,6 +142,7 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 		gasCopy uint64 // for EVMLogger to log gas remaining before execution
 		logged  bool   // deferred EVMLogger should ignore already logged steps
 		res     []byte // result of the opcode execution function
+		debug   = in.evm.Config.Tracer != nil
 	)
 	// Don't move this deferred function, it's placed before the capturestate-deferred method,
 	// so that it get's executed _after_: the capturestate needs the stacks before
@@ -152,7 +152,7 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 	}()
 	contract.Input = input
 
-	if in.evm.Config.Debug {
+	if debug {
 		defer func() {
 			if err != nil {
 				if !logged {
@@ -168,7 +168,7 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 	// the execution of one of the operations or until the done flag is set by the
 	// parent context.
 	for {
-		if in.evm.Config.Debug {
+		if debug {
 			// Capture pre-execution values for tracing.
 			logged, pcCopy, gasCopy = false, pc, contract.Gas
 		}
@@ -213,14 +213,14 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 				return nil, ErrOutOfGas
 			}
 			// Do tracing before memory expansion
-			if in.evm.Config.Debug {
+			if debug {
 				in.evm.Config.Tracer.CaptureState(pc, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err)
 				logged = true
 			}
 			if memorySize > 0 {
 				mem.Resize(memorySize)
 			}
-		} else if in.evm.Config.Debug {
+		} else if debug {
 			in.evm.Config.Tracer.CaptureState(pc, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err)
 			logged = true
 		}

core/vm/runtime/runtime_test.go

@@ -335,7 +335,6 @@ func benchmarkNonModifyingCode(gas uint64, code []byte, name string, tracerCode
 			b.Fatal(err)
 		}
 		cfg.EVMConfig = vm.Config{
-			Debug:  true,
 			Tracer: tracer,
 		}
 	}
@@ -511,7 +510,6 @@ func TestEip2929Cases(t *testing.T) {
 			code, ops)
 		Execute(code, nil, &Config{
 			EVMConfig: vm.Config{
-				Debug:     true,
 				Tracer:    logger.NewMarkdownLogger(nil, os.Stdout),
 				ExtraEips: []int{2929},
 			},
@@ -665,7 +663,6 @@ func TestColdAccountAccessCost(t *testing.T) {
 		tracer := logger.NewStructLogger(nil)
 		Execute(tc.code, nil, &Config{
 			EVMConfig: vm.Config{
-				Debug:  true,
 				Tracer: tracer,
 			},
 		})
@@ -837,7 +834,6 @@ func TestRuntimeJSTracer(t *testing.T) {
 				GasLimit: 1000000,
 				State:    statedb,
 				EVMConfig: vm.Config{
-					Debug:  true,
 					Tracer: tracer,
 				}})
 			if err != nil {
@@ -872,7 +868,6 @@ func TestJSTracerCreateTx(t *testing.T) {
 	_, _, _, err = Create(code, &Config{
 		State: statedb,
 		EVMConfig: vm.Config{
-			Debug:  true,
 			Tracer: tracer,
 		}})
 	if err != nil {

eth/tracers/api.go

@@ -805,7 +805,6 @@ func (api *API) standardTraceBlockToFile(ctx context.Context, block *types.Block
 			// Swap out the noop logger to the standard tracer
 			writer = bufio.NewWriter(dump)
 			vmConf = vm.Config{
-				Debug:                   true,
 				Tracer:                  logger.NewJSONLogger(&logConfig, writer),
 				EnablePreimageRecording: true,
 			}
@@ -965,7 +964,7 @@ func (api *API) traceTx(ctx context.Context, message *core.Message, txctx *Conte
 			return nil, err
 		}
 	}
-	vmenv := vm.NewEVM(vmctx, txContext, statedb, api.backend.ChainConfig(), vm.Config{Debug: true, Tracer: tracer, NoBaseFee: true})
+	vmenv := vm.NewEVM(vmctx, txContext, statedb, api.backend.ChainConfig(), vm.Config{Tracer: tracer, NoBaseFee: true})
 
 	// Define a meaningful timeout of a single transaction trace
 	if config.Timeout != nil {

eth/tracers/internal/tracetest/calltrace_test.go

@@ -143,7 +143,7 @@ func testCallTracer(tracerName string, dirPath string, t *testing.T) {
 			if err != nil {
 				t.Fatalf("failed to create call tracer: %v", err)
 			}
-			evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
+			evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Tracer: tracer})
 			msg, err := core.TransactionToMessage(tx, signer, nil)
 			if err != nil {
 				t.Fatalf("failed to prepare transaction for tracing: %v", err)
@@ -246,7 +246,7 @@ func benchTracer(tracerName string, test *callTracerTest, b *testing.B) {
 		if err != nil {
 			b.Fatalf("failed to create call tracer: %v", err)
 		}
-		evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
+		evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Tracer: tracer})
 		snap := statedb.Snapshot()
 		st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
 		if _, err = st.TransitionDb(); err != nil {
@@ -352,7 +352,7 @@ func TestInternals(t *testing.T) {
 					Balance: big.NewInt(500000000000000),
 				},
 			}, false)
-		evm := vm.NewEVM(context, txContext, statedb, params.MainnetChainConfig, vm.Config{Debug: true, Tracer: tc.tracer})
+		evm := vm.NewEVM(context, txContext, statedb, params.MainnetChainConfig, vm.Config{Tracer: tc.tracer})
 		msg := &core.Message{
 			To:                &to,
 			From:              origin,

eth/tracers/internal/tracetest/flat_calltrace_test.go

@@ -107,7 +107,7 @@ func flatCallTracerTestRunner(tracerName string, filename string, dirPath string
 	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})
+	evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Tracer: tracer})
 
 	msg, err := core.TransactionToMessage(tx, signer, nil)
 	if err != nil {

eth/tracers/internal/tracetest/prestate_test.go

@@ -114,7 +114,7 @@ func testPrestateDiffTracer(tracerName string, dirPath string, t *testing.T) {
 			if err != nil {
 				t.Fatalf("failed to create call tracer: %v", err)
 			}
-			evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
+			evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Tracer: tracer})
 			msg, err := core.TransactionToMessage(tx, signer, nil)
 			if err != nil {
 				t.Fatalf("failed to prepare transaction for tracing: %v", err)

eth/tracers/js/tracer_test.go

@@ -62,7 +62,7 @@ func testCtx() *vmContext {
 
 func runTrace(tracer tracers.Tracer, vmctx *vmContext, chaincfg *params.ChainConfig, contractCode []byte) (json.RawMessage, error) {
 	var (
-		env             = vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, chaincfg, vm.Config{Debug: true, Tracer: tracer})
+		env             = vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, chaincfg, vm.Config{Tracer: tracer})
 		gasLimit uint64 = 31000
 		startGas uint64 = 10000
 		value           = big.NewInt(0)
@@ -180,7 +180,7 @@ func TestHaltBetweenSteps(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{GasPrice: big.NewInt(1)}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer})
+	env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{GasPrice: big.NewInt(1)}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Tracer: tracer})
 	scope := &vm.ScopeContext{
 		Contract: vm.NewContract(&account{}, &account{}, big.NewInt(0), 0),
 	}
@@ -204,7 +204,7 @@ func TestNoStepExec(t *testing.T) {
 		if err != nil {
 			t.Fatal(err)
 		}
-		env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{GasPrice: big.NewInt(100)}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer})
+		env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{GasPrice: big.NewInt(100)}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Tracer: tracer})
 		tracer.CaptureStart(env, common.Address{}, common.Address{}, false, []byte{}, 1000, big.NewInt(0))
 		tracer.CaptureEnd(nil, 0, nil)
 		ret, err := tracer.GetResult()

eth/tracers/logger/logger_test.go

@@ -55,7 +55,7 @@ func (*dummyStatedb) SetState(_ common.Address, _ common.Hash, _ common.Hash) {}
 func TestStoreCapture(t *testing.T) {
 	var (
 		logger   = NewStructLogger(nil)
-		env      = vm.NewEVM(vm.BlockContext{}, vm.TxContext{}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: logger})
+		env      = vm.NewEVM(vm.BlockContext{}, vm.TxContext{}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Tracer: logger})
 		contract = vm.NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 100000)
 	)
 	contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x0, byte(vm.SSTORE)}

eth/tracers/tracers_test.go

@@ -87,7 +87,7 @@ func BenchmarkTransactionTrace(b *testing.B) {
 		//EnableMemory: false,
 		//EnableReturnData: false,
 	})
-	evm := vm.NewEVM(context, txContext, statedb, params.AllEthashProtocolChanges, vm.Config{Debug: true, Tracer: tracer})
+	evm := vm.NewEVM(context, txContext, statedb, params.AllEthashProtocolChanges, vm.Config{Tracer: tracer})
 	msg, err := core.TransactionToMessage(tx, signer, nil)
 	if err != nil {
 		b.Fatalf("failed to prepare transaction for tracing: %v", err)

internal/ethapi/api.go

@@ -1473,7 +1473,7 @@ func AccessList(ctx context.Context, b Backend, blockNrOrHash rpc.BlockNumberOrH
 
 		// Apply the transaction with the access list tracer
 		tracer := logger.NewAccessListTracer(accessList, args.from(), to, precompiles)
-		config := vm.Config{Tracer: tracer, Debug: true, NoBaseFee: true}
+		config := vm.Config{Tracer: tracer, NoBaseFee: true}
 		vmenv, _, err := b.GetEVM(ctx, msg, statedb, header, &config)
 		if err != nil {
 			return nil, 0, nil, err

tests/state_test.go

@@ -115,8 +115,7 @@ func withTrace(t *testing.T, gasLimit uint64, test func(vm.Config) error) {
 	}
 	buf := new(bytes.Buffer)
 	w := bufio.NewWriter(buf)
-	tracer := logger.NewJSONLogger(&logger.Config{}, w)
+	config.Tracer = logger.NewJSONLogger(&logger.Config{}, w)
-	config.Debug, config.Tracer = true, tracer
 	err2 := test(config)
 	if !reflect.DeepEqual(err, err2) {
 		t.Errorf("different error for second run: %v", err2)