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Fix comparison between bytes types.

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Fixes #2087
This commit is contained in:
chriseth 2015-07-14 16:37:11 +02:00
parent da818b1acd
commit a3dace66e1
1 changed files with 11 additions and 8 deletions
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19
ExpressionCompiler.cpp
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@ -942,24 +942,27 @@ void ExpressionCompiler::appendCompareOperatorCode(Token::Value _operator, Type
}
else
{
IntegerType const& type = dynamic_cast<IntegerType const&>(_type);
bool const c_isSigned = type.isSigned();
bool isSigned = false;
if (auto type = dynamic_cast<IntegerType const*>(&_type))
isSigned = type->isSigned();
switch (_operator)
{
case Token::GreaterThanOrEqual:
m_context << (c_isSigned ? eth::Instruction::SLT : eth::Instruction::LT)
<< eth::Instruction::ISZERO;
m_context <<
(isSigned ? eth::Instruction::SLT : eth::Instruction::LT) <<
eth::Instruction::ISZERO;
break;
case Token::LessThanOrEqual:
m_context << (c_isSigned ? eth::Instruction::SGT : eth::Instruction::GT)
<< eth::Instruction::ISZERO;
m_context <<
(isSigned ? eth::Instruction::SGT : eth::Instruction::GT) <<
eth::Instruction::ISZERO;
break;
case Token::GreaterThan:
m_context << (c_isSigned ? eth::Instruction::SGT : eth::Instruction::GT);
m_context << (isSigned ? eth::Instruction::SGT : eth::Instruction::GT);
break;
case Token::LessThan:
m_context << (c_isSigned ? eth::Instruction::SLT : eth::Instruction::LT);
m_context << (isSigned ? eth::Instruction::SLT : eth::Instruction::LT);
break;
default:
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Unknown comparison operator."));