[Lazarus] [fpc-devel] win64 dwarf patch

[And3mD]

Maybe just add an annotation in TComponent documentation to make this  
problem clear.

Something like that:

"Tag property is a streamed integer value. Using Tag as pointer storage is  
bad programing practice and produce a lot of problems
in 64 bit compilation (where Tag is still 32bit integer and pointers are  
64bit)."

http://lazarus-ccr.sourceforge.net/docs/rtl/classes/tcomponent.tag.html

Greetings
Andrzej And3mD Kilijański

Dnia 17-10-2010 o 15:12:19 Marco van de Voort <marcov at stack.nl> napisał(a):

> On Sat, Oct 16, 2010 at 02:32:12PM +0200, And3mD wrote:
>> OK, I understand. The terrible thing is that I saw using Tag as Pointer  
>> in
>> some delphi books.
>>
>> That's implicate a lot of code with Tag as pointers. Maybe adding non
>> streamed TagPtr:PtrInt will be the best compromise?
>
> While possible, I don't think it is necessary. This is bad coding that
> should have cleaned up long ago. Adding a workaround because the bad
> workaround fails makes no sense. The old workaround should be cleaned up.
>
> Of course there is always a chance that Embarcadero will do something  
> like
> that when they go 64-bit, but we'll cross that bridge if we get there.
> (since even if we add a workaround, there is a chance they will add yet
> another)
>
> --
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