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core: prevent no-op code change when clearing a 7702 delegation on an account that wasn't previously delegated, re-delegating to the same contract that was previously-delegated.

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This commit is contained in:
Jared Wasinger 2025-10-15 15:32:30 +08:00
parent f6064f32c4
commit 4ad3f6148e
1 changed files with 11 additions and 6 deletions
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17
core/state_transition.go
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@ -19,9 +19,6 @@ package core
import (
"bytes"
"fmt"
"math"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/tracing"
"github.com/ethereum/go-ethereum/core/types"
@ -29,6 +26,8 @@ import (
"github.com/ethereum/go-ethereum/crypto/kzg4844"
"github.com/ethereum/go-ethereum/params"
"github.com/holiman/uint256"
"math"
"math/big"
)
// ExecutionResult includes all output after executing given evm
@ -617,16 +616,22 @@ func (st *stateTransition) applyAuthorization(auth *types.SetCodeAuthorization)
st.state.AddRefund(params.CallNewAccountGas - params.TxAuthTupleGas)
}
prevDelegation, isDelegated := types.ParseDelegation(st.state.GetCode(authority))
// Update nonce and account code.
st.state.SetNonce(authority, auth.Nonce+1, tracing.NonceChangeAuthorization)
if auth.Address == (common.Address{}) {
// Delegation to zero address means clear.
st.state.SetCode(authority, nil, tracing.CodeChangeAuthorizationClear)
if isDelegated {
st.state.SetCode(authority, nil, tracing.CodeChangeAuthorizationClear)
}
return nil
}
// Otherwise install delegation to auth.Address.
st.state.SetCode(authority, types.AddressToDelegation(auth.Address), tracing.CodeChangeAuthorization)
// install delegation to auth.Address if the delegation changed
if !isDelegated || auth.Address != prevDelegation {
st.state.SetCode(authority, types.AddressToDelegation(auth.Address), tracing.CodeChangeAuthorization)
}
return nil
}