[lazarus] Shane's Self Problem detected!

[Payne Thomas E CNIN]

Problem:  Lazarus halt with an unhandled exception after choosing a file
from FILE OPEN pulldown menu dialog box reference (lazarus/editor.pp line
278 'Memo1 := TMemo.Create(fmEditor);' )

Possible Cause:  Object TMemo's create method is the constructor and should
pass a pointer back to Memo1 variable, but... the vmtSelfPtr is not
implemented in FPC (reference rtl/objpas/objpas.pp line 27 '//vmtSelfPtr =
-36; {not implemented yet})

Background:
I have not tested this theory, but it seems right.  Object Pascal liturature
states that you can send an app into the 'wild blue yonder' by using an
object's method without calling the constructor to intialize the link to the
virtual method table of the object. The editor problem seems related to tha
t, even though you are calling the constructor.

Solution:
It beyond my capability to suggest one.

Tom

> -----Original Message-----
> From:	Cliff.Baeseman at Greenheck.com [SMTP:Cliff.Baeseman at Greenheck.com]
> Sent:	Thursday, May 13, 1999 8:58 AM
> To:	lazarus at miraclec.com
> Subject:	[lazarus] Shane's Self Problem detected!
> 
> Shane.
>    Tom sent me a mail message that said we should look at the objpas unit
> something about self being commented out where it should
> be pointing to a memory table....
> 
> 
> Cliff
> 
> - "If you kiss me, I'll turn into a beautiful princess."
> - "Look, I'm a computer programmer. I don't have time for girls,
> but a talking frog is very very cool."
> 
> 
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