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Disallow array slicing for arrays with dyanmically encoded base types.

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This commit is contained in:
Daniel Kirchner
2020-05-13 15:52:22 +02:00
parent b2122d479f
commit 6f04664cfa
9 changed files with 53 additions and 6 deletions
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libsolidity/codegen/ExpressionCompiler.cpp
+12 -2
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@@ -1769,7 +1769,12 @@ bool ExpressionCompiler::visit(IndexAccess const& _indexAccess)
case Type::Category::ArraySlice:
{
auto const& arrayType = dynamic_cast<ArraySliceType const&>(baseType).arrayType();
solAssert(arrayType.location() == DataLocation::CallData && arrayType.isDynamicallySized(), "");
solAssert(
arrayType.location() == DataLocation::CallData &&
arrayType.isDynamicallySized() &&
!arrayType.baseType()->isDynamicallyEncoded(),
""
);
solAssert(_indexAccess.indexExpression(), "Index expression expected.");
acceptAndConvert(*_indexAccess.indexExpression(), *TypeProvider::uint256(), true);
@@ -1852,7 +1857,12 @@ bool ExpressionCompiler::visit(IndexRangeAccess const& _indexAccess)
arrayType = &sliceType->arrayType();
solAssert(arrayType, "");
solUnimplementedAssert(arrayType->location() == DataLocation::CallData && arrayType->isDynamicallySized(), "");
solUnimplementedAssert(
arrayType->location() == DataLocation::CallData &&
arrayType->isDynamicallySized() &&
!arrayType->baseType()->isDynamicallyEncoded(),
""
);
if (_indexAccess.startExpression())
acceptAndConvert(*_indexAccess.startExpression(), *TypeProvider::uint256());