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

What will happen if an unmodified application gets built against this version of the pcas code and a client subscribes (or does a ca_get_callback() ) to it with zero size?

This change will need documenting in the documentation/RELEASE_NOTES.html file. Since there isn't a document that describes the pcas API, all the detail of the necessary application changes should go there.