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MaxInitCodeSize & MaxCodeSize (EIP-3860, EIP-170) fixes #540

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Merged
svlachakis merged 1 commit into from
Jan 8, 2026
Merged

MaxInitCodeSize & MaxCodeSize (EIP-3860, EIP-170) fixes #540

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6 changes: 6 additions & 0 deletions src/Nethermind.Arbitrum/Config/ArbitrumDynamicSpecProvider.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,9 @@ private static void ApplyArbitrumOverrides(ArbitrumReleaseSpec spec, ulong arbos
{
spec.ArbOsVersion = arbosVersion;

// Arbitrum Stylus support: Allow larger code sizes
spec.MaxCodeSize = 131072; // 128 KB (vs Ethereum's 24 KB)

// Shanghai EIPs (ArbOS v11+)
bool shanghaiEnabled = arbosVersion >= ArbosVersion.Eleven;
spec.IsEip3651Enabled = shanghaiEnabled;
Expand Down Expand Up @@ -76,5 +79,8 @@ private static void ApplyArbitrumOverrides(ArbitrumReleaseSpec spec, ulong arbos

// Disable contract code validation as Arbitrum stores Stylus bytecode
spec.IsEip3541Enabled = false;

// Arbitrum supports larger contracts than Ethereum (128KB+ for Stylus)
spec.IsEip170Enabled = false;
}
}