QII support for unconstrained array elements in records

Quartus Prime Pro uses a new synthes parser that has greatly expanded support for VHDL and Verilog. I don't know the case of unconstrained arrays in records for sure, but if other tools support it then this probably will. The downside is that it only supports Arria 10/Stratix 10, so if targeting an older family you won't be able to use it.

(It was a large project to do this new parser, as well as other Pro features, and it generates different results, which are reasons why it wasn't ported back to older families. Understandably, this can cause some pain if Intel has something but doesn't support your device.)