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Change translation of implicit throws (issue #1589).

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This adds a new invalid instruction that is used for encoding
implicit throws that are emitted by the compiler. This makes it
possible to distinguish such runtime errors from user-provided,
explicit throws.
This commit is contained in:
Valentin Wüstholz authored and chriseth committed 2017-01-26 16:39:07 +01:00
1 parent 102fd7ee5d
commit 9bcbd93ac5
10 files changed
+49 -17
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libsolidity/codegen/CompilerUtils.cpp
+3 -3
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@@ -468,7 +468,7 @@ void CompilerUtils::convertType(Type const& _typeOnStack, Type const& _targetTyp
EnumType const& enumType = dynamic_cast<decltype(enumType)>(_typeOnStack);
solAssert(enumType.numberOfMembers() > 0, "empty enum should have caused a parser error.");
m_context << u256(enumType.numberOfMembers() - 1) << Instruction::DUP2 << Instruction::GT;
m_context.appendConditionalJumpTo(m_context.errorTag());
m_context.appendConditionalInvalid();
enumOverflowCheckPending = false;
}
break;
@@ -497,7 +497,7 @@ void CompilerUtils::convertType(Type const& _typeOnStack, Type const& _targetTyp
EnumType const& enumType = dynamic_cast<decltype(enumType)>(_targetType);
solAssert(enumType.numberOfMembers() > 0, "empty enum should have caused a parser error.");
m_context << u256(enumType.numberOfMembers() - 1) << Instruction::DUP2 << Instruction::GT;
m_context.appendConditionalJumpTo(m_context.errorTag());
m_context.appendConditionalInvalid();
enumOverflowCheckPending = false;
}
else if (targetTypeCategory == Type::Category::FixedPoint)
@@ -807,7 +807,7 @@ void CompilerUtils::pushZeroValue(Type const& _type)
{
if (funType->location() == FunctionType::Location::Internal)
{
m_context << m_context.errorTag();
m_context.appendInvalid();
return;
}
}