Open
Conversation
taratorio
requested review from
AskAlexSharov,
Giulio2002,
mh0lt and
yperbasis
as code owners
Flip the devnet-only defaults for the bal-devnet-4 branch: - ExperimentalBAL: false -> true (ethconfig.Defaults, CLI flag, tester) - EXEC3_PARALLEL env default: false -> true Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
yperbasis
added a commit
that referenced
this pull request
Apr 20, 2026
…tics #19277 added `&& !syscall` to the Spurious Dragon zero-value short-circuit in evm.call, so system calls to a non-deployed target now run CreateAccount(addr, false) instead of returning a no-op. That breaks EIP-4788's rule that the beacon-root syscall is a no-op when the contract code is empty — specifically at the fork-transition block, where the beacon-root contract is deployed later in the same block by a CREATE tx. The pre-tx CreateAccount diverts state enough that a later verifier tx underuses gas and the block is rejected with a gas mismatch. Surfaced once #20606 (bal-devnet-4) flipped ExperimentalBAL + Exec3Parallel on by default: eest_blockchain's cancun/eip4788_beacon_root/test_beacon_root_contract_deploy[deploy_on_cancun] goes red with "gas used by execution: 52529, in header: 116552" on block 2. Dropping the `!syscall` clause restores the no-op short-circuit. The rest of #19277 (skip CanTransfer on zero-value calls, TouchAccount(caller) instead of Transfer for syscalls, intra_block_state refactor) is preserved. TestSystemCallZeroValueSkipsTransferChecks still passes (its target already exists, so this path isn't exercised). Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
8 tasks
yperbasis
added a commit
that referenced
this pull request
Apr 20, 2026
…tics #19277 added `&& !syscall` to the Spurious Dragon zero-value short-circuit in evm.call, so system calls to a non-deployed target now run CreateAccount(addr, false) instead of returning a no-op. That breaks EIP-4788's rule that the beacon-root syscall is a no-op when the contract code is empty — specifically at the fork-transition block, where the beacon-root contract is deployed later in the same block by a CREATE tx. The pre-tx CreateAccount diverts state enough that a later verifier tx underuses gas and the block is rejected with a gas mismatch. Surfaced once #20606 (bal-devnet-4) flipped ExperimentalBAL + Exec3Parallel on by default: eest_blockchain's cancun/eip4788_beacon_root/test_beacon_root_contract_deploy[deploy_on_cancun] goes red with "gas used by execution: 52529, in header: 116552" on block 2. Dropping the `!syscall` clause restores the no-op short-circuit. The rest of #19277 (skip CanTransfer on zero-value calls, TouchAccount(caller) instead of Transfer for syscalls, intra_block_state refactor) is preserved. TestSystemCallZeroValueSkipsTransferChecks still passes (its target already exists, so this path isn't exercised). Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
for #20542