[fpc-pascal] Release of fpc-2.1.4 aka 2.2.0-beta

[Jonas Maebe]

On 20 May 2007, at 16:38, bartek wrote:

> OK. And what about this:
> -----8<-----
> /home/bartek/Dev/units/glgui/glgui.pp(376,33) Error: Can't take the  
> address of
> constant expressions
> -----8<-----
> constructor TGLGUI3DMouseMapper.Create(aOwnerDesktop: TGLGUIDesktop);
> begin
>         OwnerDesktop:=aOwnerDesktop;
>         OwnerDesktop.MouseMapper:=self; // 376 is here
> end;
> -----8<-----
>
> Definition snippet:
> -----8<-----
>                 // properties
>                 property OwnerDesktop: TGLGUIDesktop read  
> fOwnerDesktop write
> fOwnerDesktop;
> -----8<-----

You cannot write to fields of properties. The reason is that any  
property accessor should be transparently replaceable by a function  
call, and if you do that in the above expression then your assignment  
would change something inside the (temporary) function result rather  
than in the field.


Jonas