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From: Angelo.Fumagalli@alcatel.it
Subject: Sizeof variant records
Date: 27 Mar 2006, 11:40:29

How can I have the true "sizeof" of  variant records? Gpc sizeof accepts 
only one parameter as type or variable so isn't possible to specify tags 
parameters for example:

type
  myrec_t = packed record
                     a: integer;
                     case b: boolean of
                     true: (x: integer;
                              y: integer);
                     false: (case cc: char of
                               'a': (tst: integer;
                               'b': (t1: byte;
                                      t2: byte);
                               'c': (tx: real));
                    end;
...
writeln(sizeof(myrec_t,true);
writeln(sizeof(myrec_t,false,'a');

I tried to use the new statement instead, e.g.

  var
     p: ^myrec_t;

  begin
      new(p,true);
      writeln(sizeof(p^));
      dispose(p,true);
      new(p,false,'a');
      writeln(sizeof(p^));

but in both cases sizeof return the same value that is the maximum record 
size.

Thanks in advance.

    Angelo Fumagalli

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