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fix(gasmeter): account for new-account and memory gas in TRON instructions #120

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Merged
CodeNinjaEvan merged 1 commit into from
Jun 25, 2026
Merged

fix(gasmeter): account for new-account and memory gas in TRON instructions #120

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7 changes: 7 additions & 0 deletions libevmasm/GasMeter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -223,6 +223,10 @@ GasMeter::GasConsumption GasMeter::estimateMax(AssemblyItem const& _item, bool _
break;
case Instruction::NATIVEVOTE:
gas = GasCosts::voteGas;
// NATIVEVOTE reads two memory ranges (see SemanticInformation::readWriteOperations).
// With args == 4, the ranges are (offset, size) = (-3, -2) and (-1, 0) on the stack.
gas += memoryGas(-3, -2);
gas += memoryGas(-1, 0);
break;
case Instruction::NATIVEWITHDRAWREWARD:
gas = GasCosts::withdrawGas;
Expand All @@ -231,9 +235,12 @@ GasMeter::GasConsumption GasMeter::estimateMax(AssemblyItem const& _item, bool _
case Instruction::NATIVEUNFREEZEBALANCEV2:
case Instruction::NATIVECANCELALLUNFREEZEV2:
case Instruction::NATIVEWITHDRAWEXPIREUNFREEZE:
gas = GasCosts::freezeV2Gas;
break;
case Instruction::NATIVEDELEGATERESOURCE:
case Instruction::NATIVEUNDELEGATERESOURCE:
gas = GasCosts::freezeV2Gas;
gas += GasCosts::callNewAccountGas; // Delegating to a non-existent address may create a new account.
break;
case Instruction::CHAINID:
gas = runGas(Instruction::CHAINID, m_evmVersion);
Expand Down