Code review comment for lp:~matej-sekoranja/epics-base/pcas-variable-length-arrays

> Would it be possible to always set the protoIn size to the max number of elements when handling a zero-length read?

I think this is the appropriate strategy. This way existing code would see this as a request for max size, which it can handle w/o modification. So I would propose to do the merge once this point is reached w/o any API changes. This way we can get the protocol change in place.