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Fixed gas calculation for CALL.

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chriseth 2015-03-06 16:23:39 +01:00
parent 6fea41abd8
commit 0e50ef1ee0
1 changed files with 3 additions and 2 deletions
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5
ExpressionCompiler.cpp
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@ -1052,8 +1052,9 @@ void ExpressionCompiler::appendExternalFunctionCall(FunctionType const& _functio
if (_functionType.gasSet())
m_context << eth::dupInstruction(m_context.baseToCurrentStackOffset(gasStackPos));
else
// send all gas except for the 41 / 6741 needed to execute "SUB" and "CALL"
m_context << u256(41 + (_functionType.valueSet() ? 6700 : 0)) << eth::Instruction::GAS << eth::Instruction::SUB;
// send all gas except the amount needed to execute "SUB" and "CALL"
// @todo this retains too much gas for now, needs to be fine-tuned.
m_context << u256(50 + (_functionType.valueSet() ? 9000 : 0)) << eth::Instruction::GAS << eth::Instruction::SUB;
m_context << eth::Instruction::CALL;
auto tag = m_context.appendConditionalJump();
m_context << eth::Instruction::STOP << tag; // STOP if CALL leaves 0.