[fpc-pascal] Empty Set in constants in generics

[Ryan Joseph via fpc-pascal]

Should generics accept empty sets as constants? I think they should and this is 
a bug but I wanted to ask first.

========================

{$mode objfpc}

program test;

type
  TItem = (A, B, C);
  TItems = set of TItem;
  generic GType<const T: TItems> = class
  end;

const
  TOtherItems = [];   // no problems here

type
  // error: Incompatible types: got "Empty Set" expected "TItems"
  TType = specialize GType<[]>;

begin
end.

Regards,
        Ryan Joseph

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