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Fix negative denominator in `boost::rational` during exponentiation.

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Daniel Kirchner
2018-11-06 10:52:10 +01:00
parent 88aee34c22
commit e036133d1b
3 changed files with 16 additions and 2 deletions
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libsolidity/ast/Types.h
+9
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@@ -51,6 +51,15 @@ using FunctionTypePointer = std::shared_ptr<FunctionType const>;
using TypePointers = std::vector<TypePointer>;
using rational = boost::rational<dev::bigint>;
inline rational makeRational(bigint const& _numerator, bigint const& _denominator)
{
solAssert(_denominator != 0, "division by zero");
// due to a bug in certain versions of boost the denominator has to be positive
if (_denominator < 0)
return rational(-_numerator, -_denominator);
else
return rational(_numerator, _denominator);
}
enum class DataLocation { Storage, CallData, Memory };