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Merge pull request #11377 from ethereum/smt_cast_rational

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[SMTChecker] Assign cast from constants directly
This commit is contained in:
Leonardo
2021-05-11 14:47:51 +02:00
committed by GitHub
parent 299dae4d1a e2959ce55c
commit eb99177506
1 changed files with 8 additions and 0 deletions
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libsolidity/formal/SMTEncoder.cpp
+8
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@@ -1113,6 +1113,14 @@ void SMTEncoder::visitTypeConversion(FunctionCall const& _funCall)
{
solAssert(smt::isNumber(*funCallType), "");
RationalNumberType const* rationalType = isConstant(*argument);
if (rationalType)
{
// The TypeChecker guarantees that a constant fits in the cast size.
defineExpr(_funCall, symbArg);
return;
}
auto const* fixedCast = dynamic_cast<FixedBytesType const*>(funCallType);
auto const* fixedArg = dynamic_cast<FixedBytesType const*>(argType);
if (fixedCast && fixedArg)