[fpc-pascal] FPC bug or brain bug ?

[Frank Peelo]

On 27/05/10 23:13, Jonas Maebe wrote:
> On 27 May 2010, at 23:31, Yann Bat wrote:
>
>    
>>> The compiler always adds a VMT if an object has a constructor or destructor. The reason is that the VMT also contains the instance size, which is used by the constructor helper to allocate the required amount of memory.
>>>        
>> Ok but why a different behaviour between [fpc | objfpc] mode and [tp |
>> delphi] mode ?
>>      
> It is allowed in Delphi and TP because they allow declaring typed constants of objects. I don't remember why it was disabled in the FPC modes, but that happened a long time ago (before the move from cvs to svn). Maybe someone else does.
>    

Definitely TP-style objects did not have a VMT unless you declared a 
virtual method, in TP. And a destructor was only virtual if it was 
declared virtual. Hence typed constant objects could be possible. 
Presumably FPC decided compatibility with this feature was not desirable?

FP