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core: implement eip-7778: block gas accounting without refunds

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This commit is contained in:
MariusVanDerWijden 2026-01-13 09:33:05 +01:00
parent 31d5d82ce5
commit 7869c18c0a
2 changed files with 12 additions and 6 deletions
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16
core/state_transition.go
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@ -528,6 +528,7 @@ func (st *stateTransition) execute() (*ExecutionResult, error) {
peakGasUsed := st.gasUsed()
// Compute refund counter, capped to a refund quotient.
gasBeforeRefunds := peakGasUsed
st.gasRemaining += st.calcRefund()
if rules.IsPrague {
// After EIP-7623: Data-heavy transactions pay the floor gas.
@ -542,7 +543,7 @@ func (st *stateTransition) execute() (*ExecutionResult, error) {
peakGasUsed = floorDataGas
}
}
st.returnGas()
st.returnGas(rules, gasBeforeRefunds)
effectiveTip := msg.GasPrice
if rules.IsLondon {
@ -652,7 +653,7 @@ func (st *stateTransition) calcRefund() uint64 {
// returnGas returns ETH for remaining gas,
// exchanged at the original rate.
func (st *stateTransition) returnGas() {
func (st *stateTransition) returnGas(rules params.Rules, gasBeforeRefunds uint64) {
remaining := uint256.NewInt(st.gasRemaining)
remaining.Mul(remaining, uint256.MustFromBig(st.msg.GasPrice))
st.state.AddBalance(st.msg.From, remaining, tracing.BalanceIncreaseGasReturn)
@ -661,9 +662,14 @@ func (st *stateTransition) returnGas() {
st.evm.Config.Tracer.OnGasChange(st.gasRemaining, 0, tracing.GasChangeTxLeftOverReturned)
}
// Also return remaining gas to the block gas counter so it is
// available for the next transaction.
st.gp.AddGas(st.gasRemaining)
if !rules.IsAmsterdam {
// Pre-Amsterdam return remaining gas to the block gas counter so it is
// available for the next transaction.
st.gp.AddGas(st.gasRemaining)
} else {
// Post-Amsterdam only return the remaining gas minus the refunds.
st.gp.AddGas(gasBeforeRefunds)
}
}
// gasUsed returns the amount of gas used up by the state transition.

2
core/tracing/hooks.go
View file

@ -358,7 +358,7 @@ const (
// this generates an increase in gas. There is at most one of such gas change per transaction.
GasChangeTxRefunds GasChangeReason = 3
// GasChangeTxLeftOverReturned is the amount of gas left over at the end of transaction's execution that will be returned
// to the chain. This change will always be a negative change as we "drain" left over gas towards 0. If there was no gas
// to the account. This change will always be a negative change as we "drain" left over gas towards 0. If there was no gas
// left at the end of execution, no such even will be emitted. The returned gas's value in Wei is returned to caller.
// There is at most one of such gas change per transaction.
GasChangeTxLeftOverReturned GasChangeReason = 4