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eth/tracers: prestateTracer - exclude unchanged storage slots in diffMode (#25944)

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Fixes #25943
This commit is contained in:
Sina Mahmoodi 2022-11-01 16:55:44 +03:30 committed by GitHub
parent 8e69622c68
commit 0c40df5f28
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 9 additions and 73 deletions
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68
eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/inner_create.json vendored
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3
eth/tracers/internal/tracetest/testdata/prestate_tracer_with_diff_mode/simple.json vendored
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@ -73,9 +73,6 @@
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"storage": { "storage": {
"0x0000000000000000000000000000000000000000000000000000000000000000": "0x000000000000000000000001b436ba50d378d4bbc8660d312a13df6af6e89dfb",
"0x0000000000000000000000000000000000000000000000000000000000000001": "0x00000000000000000000000000000000000000000000000006f05b59d3b20000",
"0x0000000000000000000000000000000000000000000000000000000000000002": "0x000000000000000000000000000000000000000000000000000000000000003c",
"0x0000000000000000000000000000000000000000000000000000000000000003": "0x000000000000000000000000000000000000000000000000000000005a37b834" "0x0000000000000000000000000000000000000000000000000000000000000003": "0x000000000000000000000000000000000000000000000000000000005a37b834"
} }
}, },

11
eth/tracers/native/prestate.go
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@ -69,12 +69,10 @@ type prestateTracer struct {
} }
type prestateTracerConfig struct { type prestateTracerConfig struct {
DiffMode bool `json:"diffMode"` // If true, this tracer will return all diff states DiffMode bool `json:"diffMode"` // If true, this tracer will return state modifications
} }
func newPrestateTracer(ctx *tracers.Context, cfg json.RawMessage) (tracers.Tracer, error) { func newPrestateTracer(ctx *tracers.Context, cfg json.RawMessage) (tracers.Tracer, error) {
// First callframe contains tx context info
// and is populated on start and end.
var config prestateTracerConfig var config prestateTracerConfig
if cfg != nil { if cfg != nil {
if err := json.Unmarshal(cfg, &config); err != nil { if err := json.Unmarshal(cfg, &config); err != nil {
@ -192,7 +190,7 @@ func (t *prestateTracer) CaptureTxEnd(restGas uint64) {
} }
for addr, state := range t.pre { for addr, state := range t.pre {
// the deleted account's state is pruned // The deleted account's state is pruned from `post` but kept in `pre`
if _, ok := t.deleted[addr]; ok { if _, ok := t.deleted[addr]; ok {
continue continue
} }
@ -222,7 +220,10 @@ func (t *prestateTracer) CaptureTxEnd(restGas uint64) {
} }
newVal := t.env.StateDB.GetState(addr, key) newVal := t.env.StateDB.GetState(addr, key)
if val != newVal { if val == newVal {
// Omit unchanged slots
delete(t.pre[addr].Storage, key)
} else {
modified = true modified = true
if newVal != (common.Hash{}) { if newVal != (common.Hash{}) {
postAccount.Storage[key] = newVal postAccount.Storage[key] = newVal