[fpc-pascal] bug or feature?

[Elmar Haneke]

> This can't be right, can it?
>
> type
>    TBird = class
>      procedure Fly;
>    end;
>    TEagle = TBird; // alias
>
> procedure TEagle.Fly;
> begin
> end;


It does depend on what you expect an Type-Alias to be.

If you expect the compiler to generate an compatible class then your 
example must not be compilable.

If you expect an alias die make the Typenames "TEagle" and "TBird" 
equivalent it is no problem for the compiler which name you use at what 
place.

In any case I would judge such code as "bad style" - programmers should 
avoid doing so.


Elmar