If I have a
message Foo{
Bar bar = 1;
}
I can get a
Bar* bar = foo.mutable_bar();
I'd like to be able to get, at the very least
std::weak_ptr<Bar> bar = foo.mutable_bar();
if not a std::shared_ptr<Bar>.
I have an issue where an object has to hold a raw pointer to a submessage,
and it is possible to delete that submessage (using the message's API
elsewhere), in a way that the object isn't aware of, and it attempts to use
that stale pointer. This is one of the principle issues addressed with use
of smart pointers, and it's unclear why protobuf cannot provide them. I
don't understand the Arena allocation enough, if it is a problem there, but
it seems like that would at least provide some way for weak_ptr to work. Or
even if protobuf had its own custom template class that behaved like a weak
pointer so that I can at least be sure I don't have stale pointers or
references floating around in my code.
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