Solidity failing assertion

buggy.cpp

bool StructType::canBeUsedExternally(bool _inLibrary) const
{
	if (_inLibrary && location() == DataLocation::Storage)
		return true;
	else if (recursive())
		return false;
	else
	{
		// Check that all members have interface types.
		// We pass "false" to canBeUsedExternally (_inLibrary), because this struct will be
		// passed by value and thus the encoding does not differ, but it will disallow
		// mappings.
		for (auto const& var: m_struct.members())
		{
			solAssert(var->annotation().type, "");
			if (!var->annotation().type->canBeUsedExternally(false))
				return false;
		}
	}
	return true;
}