[fpc-pascal] Use of abstract classes

[Michael Fuchs]

Hello,

I have the following test program:

program AbstractTest;
{$MODE ObjFpc}{$H+}

uses Classes;

type
   TAbstractClass = class abstract(TObject)
   end;

var
   MyAbstractClass: TAbstractClass = nil;

begin
   MyAbstractClass := TAbstractClass.Create;
   MyAbstractClass.Free;
end.


I thougt this would cause a compiler error, while creating a abstract 
class. Surprisingly it compiles, even without a warning.

Do I have to use any compiler switches or is there no sense in using the 
abstract keyword for a class?


Michael