Bernhard Tschirren wrote:

You cannot use SizeOf with objects?!?! It just does not work. It either aborts during compilation, or it returns rediculous values during execution.

Did you initialize the object with a constructor call?

BTW: There is a little difference to BP: In BP, objects that have neither constructors, destructors nor virtual methods don't have a VMT link. So it's possible in BP to get their size without initalizing them. I think that's kind of a misfeature, since the following program produces the wrong result for vy in BP, so IMHO, BP's behaviour should not be duplicated by gpc. (Though it's not 100% BP compatible then, a good BP program shouldn't make use of it, anyway.)

type x=object a:integer; end;

y=object(x) b:integer; end;

procedure w(var p:x); begin writeln(sizeof(p)) end;

var vx:x; vy:y;

begin w(vx); w(vy); end.