cerc-io/solidity
11
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[SMTChecker] added missing type constraints for Address

Browse Source
This commit is contained in:
Martin Blicha
2021-01-27 20:39:24 +01:00
parent 49dbcba3a0
commit deb90d84a6
35 changed files with 846 additions and 823 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libsolidity/formal/SymbolicTypes.cpp
+3 -13
View File
@@ -426,7 +426,7 @@ smtutil::Expression maxValue(frontend::TypePointer _type)
)
return TypeProvider::uint(160)->maxValue();
if (auto const* enumType = dynamic_cast<EnumType const*>(_type))
return enumType->numberOfMembers();
return enumType->numberOfMembers() - 1;
if (auto const* bytesType = dynamic_cast<FixedBytesType const*>(_type))
return TypeProvider::uint(bytesType->numBytes() * 8)->maxValue();
solAssert(false, "");
@@ -544,18 +544,8 @@ void setSymbolicUnknownValue(smtutil::Expression _expr, frontend::TypePointer co
smtutil::Expression symbolicUnknownConstraints(smtutil::Expression _expr, frontend::TypePointer const& _type)
{
solAssert(_type, "");
if (isEnum(*_type))
{
auto enumType = dynamic_cast<frontend::EnumType const*>(_type);
solAssert(enumType, "");
return _expr >= 0 && _expr < enumType->numberOfMembers();
}
else if (isInteger(*_type))
{
auto intType = dynamic_cast<frontend::IntegerType const*>(_type);
solAssert(intType, "");
return _expr >= minValue(*intType) && _expr <= maxValue(*intType);
}
if (isEnum(*_type) || isInteger(*_type) || isAddress(*_type) || isFixedBytes(*_type))
return _expr >= minValue(_type) && _expr <= maxValue(_type);
else if (isArray(*_type) || isMapping(*_type))
/// Length cannot be negative.
return smtutil::Expression::tuple_get(_expr, 1) >= 0;