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Fixed missing OnNewAccount hook

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Firehose: In previous versions of the EVM, there was no `evm.StateDB.Exist` above and the `CreateAccount` was always called. This was leading to always get a `OnNewAccount` event in the tracer as we were not checking previous existence of the account.

With the introduction of the `Exist` method, there is now cases where `CreateAccount` is not called if it was previously existing.

To keep the same tracing behavior as before, we call the `OnNewAccount` manually here if the account was previously existing.
This commit is contained in:
Matthieu Vachon 2025-02-10 11:04:43 -05:00
parent 2cfff4e562
commit 421cc2a76d
1 changed files with 15 additions and 0 deletions
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15
core/vm/evm.go
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@ -474,7 +474,22 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
snapshot := evm.StateDB.Snapshot()
if !evm.StateDB.Exist(address) {
evm.StateDB.CreateAccount(address)
} else {
// Firehose: In previous versions of the EVM, there was no `evm.StateDB.Exist`
// above and the `CreateAccount` was always called. This was leading to
// always get a `OnNewAccount` event in the tracer as we were not checking
// previous existence of the account.
//
// With the introduction of the `Exist` method, there is now cases where
// `CreateAccount` is not called if it was previously existing.
//
// To keep the same tracing behavior as before, we call the `OnNewAccount`
// manually here if the account was previously existing.
if evm.Config.Tracer != nil && evm.Config.Tracer.OnNewAccount != nil {
evm.Config.Tracer.OnNewAccount(address, true)
}
}
// CreateContract means that regardless of whether the account previously existed
// in the state trie or not, it _now_ becomes created as a _contract_ account.
// This is performed _prior_ to executing the initcode, since the initcode