On Sat, 26 Sep 2009, Jonas Maebe wrote:
On 26 Sep 2009, at 16:25, Paul Ishenin wrote:
Can someone explain how it is possible:
http://bugs.freepascal.org/view.php?id=14670 ?
Objects.pp has only one trivial line of code which executes on the start.
Maybe because it uses "begin end." instead of "initialiaztion"? I guess
that in any case it is a compiler bug rather than a lazarus bug.
The problem is most likely that the "objects" unit declares a TObject type,
which is a TP-style object. As a result, the TForm1 methods do not expect a
Delphi-style TObject parameter, but a TP-style TObject parameter (by value).
I don't know how the ListView1EndDrag and MenuItem1Click methods in unit1 are
called, but I assume that's done somehow indirectly with an objpas.TObject
parameter, which would result in an unbalanced stack.
This is the explanation. If there is a bug, it is that the streaming does
not check the type of the arguments, just the name of the method.
Delphi has the same 'problem', in fact I make regular use of it :-)
Michael.
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