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Disallow compound assignment for tuples.

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chriseth 2017-03-06 14:50:00 +01:00
parent 276229cc58
commit 93ef7fd260
1 changed files with 5 additions and 0 deletions
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5
libsolidity/analysis/TypeChecker.cpp
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@ -947,6 +947,11 @@ bool TypeChecker::visit(Assignment const& _assignment)
_assignment.annotation().type = t;
if (TupleType const* tupleType = dynamic_cast<TupleType const*>(t.get()))
{
if (_assignment.assignmentOperator() != Token::Assign)
typeError(
_assignment.location(),
"Compound assignment is not allowed for tuple types."
);
// Sequenced assignments of tuples is not valid, make the result a "void" type.
_assignment.annotation().type = make_shared<TupleType>();
expectType(_assignment.rightHandSide(), *tupleType);