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[SMTChecker] Fix ICEs with tuples

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This commit is contained in:
Leonardo Alt
2020-03-03 11:35:58 +01:00
parent b65a165da1
commit 96a230af50
7 changed files with 59 additions and 4 deletions
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libsolidity/formal/SMTEncoder.cpp
+11 -4
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@@ -407,19 +407,26 @@ void SMTEncoder::endVisit(TupleExpression const& _tuple)
auto const& symbTuple = dynamic_pointer_cast<smt::SymbolicTupleVariable>(m_context.expression(_tuple));
solAssert(symbTuple, "");
auto const& symbComponents = symbTuple->components();
auto const& tupleComponents = _tuple.components();
solAssert(symbComponents.size() == _tuple.components().size(), "");
auto const* tupleComponents = &_tuple.components();
while (tupleComponents->size() == 1)
{
auto innerTuple = dynamic_pointer_cast<TupleExpression>(tupleComponents->front());
solAssert(innerTuple, "");
tupleComponents = &innerTuple->components();
}
solAssert(symbComponents.size() == tupleComponents->size(), "");
for (unsigned i = 0; i < symbComponents.size(); ++i)
{
auto sComponent = symbComponents.at(i);
auto tComponent = tupleComponents.at(i);
auto tComponent = tupleComponents->at(i);
if (sComponent && tComponent)
{
if (auto varDecl = identifierToVariable(*tComponent))
m_context.addAssertion(sComponent->currentValue() == currentValue(*varDecl));
else
{
solAssert(m_context.knownExpression(*tComponent), "");
if (!m_context.knownExpression(*tComponent))
createExpr(*tComponent);
m_context.addAssertion(sComponent->currentValue() == expr(*tComponent));
}
}