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Bool variables should not allow arithmetic comparison

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This commit is contained in:
Leonardo Alt
2018-04-27 11:35:58 +02:00
parent ef2111a2fe
commit ab251c7e7d
3 changed files with 2 additions and 35 deletions
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libsolidity/formal/SMTChecker.cpp
+1 -5
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@@ -472,11 +472,7 @@ void SMTChecker::compareOperation(BinaryOperation const& _op)
solUnimplementedAssert(SSAVariable::isBool(_op.annotation().commonType->category()), "Operation not yet supported");
value = make_shared<smt::Expression>(
op == Token::Equal ? (left == right) :
op == Token::NotEqual ? (left != right) :
op == Token::LessThan ? (!left && right) :
op == Token::LessThanOrEqual ? (!left || right) :
op == Token::GreaterThan ? (left && !right) :
/*op == Token::GreaterThanOrEqual*/ (left || !right)
/*op == Token::NotEqual*/ (left != right)
);
}
// TODO: check that other values for op are not possible.