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state: Check deploy prefix 0xEF before gas cost #1552

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Merged
chfast merged 1 commit into from
May 28, 2026
+4 −4
Merged

state: Check deploy prefix 0xEF before gas cost #1552

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8 changes: 4 additions & 4 deletions test/state/host.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -302,6 +302,10 @@ evmc::Result Host::create(const evmc_message& msg) noexcept
if (m_rev >= EVMC_SPURIOUS_DRAGON && code.size() > MAX_CODE_SIZE)
return evmc::Result{EVMC_FAILURE};

// Reject new contract code starting with the 0xEF byte (EIP-3541).
if (m_rev >= EVMC_LONDON && code.starts_with(0xEF))
return evmc::Result{EVMC_CONTRACT_VALIDATION_FAILURE};
Comment on lines +305 to +307

// Code deployment cost.
const auto cost = std::ssize(code) * 200;
gas_left -= cost;
Expand All @@ -314,10 +318,6 @@ evmc::Result Host::create(const evmc_message& msg) noexcept

if (!code.empty())
{
// EIP-3541: Reject new contract code starting with the 0xEF byte.
if (m_rev >= EVMC_LONDON && code[0] == 0xEF)
return evmc::Result{EVMC_CONTRACT_VALIDATION_FAILURE};

new_acc->code_hash = keccak256(code);
new_acc->code = code;
new_acc->code_changed = true;
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