test_call_value_to_pre_existing_selfdestructed_account()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_call_value_to_pre_existing_selfdestructed_account@c74f1a67.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_call_value_to_pre_existing_selfdestructed_account --fork Amsterdam

Verify CALL with value to a pre existing contract that ran SELFDESTRUCT charges no new account state gas.

Per EIP-6780 a pre existing contract that executes SELFDESTRUCT is not queued for end of the transaction destruction, so a subsequent CALL sees an existing, code carrying account and the new account creation gate does not fire.

Several cold SSTOREs after the CALLs make block state gas dominate the block regular gas component, so the block header reflects exactly num_probes * sstore_state_gas. A spurious new account charge on the value bearing CALL would push the header up by that charge, breaking the assertion.

Source code in tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py

@pytest.mark.parametrize(
    "beneficiary_type",
    [
        pytest.param("eoa", id="eoa_beneficiary"),
        pytest.param("contract", id="contract_beneficiary"),
    ],
)
@pytest.mark.valid_from("EIP8037")
def test_call_value_to_pre_existing_selfdestructed_account(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
    beneficiary_type: str,
) -> None:
    """
    Verify CALL with value to a pre existing contract that ran
    SELFDESTRUCT charges no new account state gas.

    Per EIP-6780 a pre existing contract that executes SELFDESTRUCT
    is not queued for end of the transaction destruction, so a
    subsequent CALL sees an existing, code carrying account and the
    new account creation gate does not fire.

    Several cold SSTOREs after the CALLs make block state gas
    dominate the block regular gas component, so the block header
    reflects exactly `num_probes * sstore_state_gas`. A spurious
    new account charge on the value bearing CALL would push the
    header up by that charge, breaking the assertion.
    """
    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)

    # Enough probes that the combined probe state gas dominates the
    # transaction's regular gas component and the header reflects
    # block state gas alone.
    num_probes = 6
    probe_state_gas = num_probes * sstore_state_gas

    # Beneficiary must be alive so the target's SELFDESTRUCT itself
    # does not charge for creating a new beneficiary.
    beneficiary: Address = (
        pre.fund_eoa(amount=1)
        if beneficiary_type == "eoa"
        else pre.deploy_contract(code=Op.STOP)
    )
    target = pre.deploy_contract(
        code=Op.SELFDESTRUCT(beneficiary),
        balance=1,
    )

    probes = Bytecode()
    for slot in range(num_probes):
        probes += Op.SSTORE(slot, 1)
    orchestrator = pre.deploy_contract(
        code=(
            Op.POP(Op.CALL(gas=Op.GAS, address=target))
            + Op.POP(Op.CALL(gas=Op.GAS, address=target, value=1))
            + probes
        ),
        balance=3,
    )

    tx = Transaction(
        to=orchestrator,
        state_gas_reservoir=probe_state_gas,
        sender=pre.fund_eoa(),
    )

    blockchain_test(
        pre=pre,
        blocks=[
            Block(
                txs=[tx],
                header_verify=Header(gas_used=probe_state_gas),
            ),
        ],
        post={},
    )

Parametrized Test Cases

This test generates 2 parametrized test cases across 1 fork.