[fpc-devel] Capturing addresses

[Marco Borsari]

Il 10/11/2019 14:36, Jonas Maebe ha scritto:
> Hi,
> 
> Does anyone know what the accepted/excepted behaviour is regarding the
> capture of addresses of var/out/const-by-address/constref parameters?
> 
> For example:
> 
> var
>    g: longint;
>    p: plongint;
> 
> procedure test(var l: longint);
> begin
>    p:=@l;
> end;
> 
> begin
>    test(g);
> end.
>
> The question is: should the compiler by default assume that such
> addresses are not captured, or that they are captured? Does anyone know
> if a lot of code exists that does this?

To me p:=@l should be simply refused by the compiler as it happens in 
case of p:=l.
Marco