Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.programming > #8070

Re: Is Adjust allowed on assignment of to a class-wide argument?

Show all headers | View raw

Victor Porton wrote:

> Is the following program allowed to print "Adjust"?
> 
> GCC 7.2.0 does not print "Adjust". I suspect it is because GCC optimizes
> away an allowed Adjust procedure.
> 
> Is it allowed to call Adjust? Will a compiler be conforming to the spec if
> it produces from the below source a program which prints "Adjust"?
> 
> ---------------
> with Ada.Finalization;
> with Ada.Text_IO;
> 
> procedure Test is
> 
>   type A is new Ada.Finalization.Controlled with null record;
> 
>   type B is new A with null record;
> 
>   overriding procedure Adjust (Object: in out B) is
>   begin
>     Ada.Text_IO.Put_Line("Adjust");
>   end;
> 
>   procedure X (Arg: A'Class) is
>   begin
>     null;
>   end;
> 
>   Object: B;
> 
> begin
>   X(Object);
> end;
> 

Sorry, wrong Usenet group.

-- 
Victor Porton - http://portonvictor.org

Back to comp.programming | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Is Adjust allowed on assignment of to a class-wide argument? Victor Porton <porton@narod.ru> - 2017-09-29 19:40 +0300
  Re: Is Adjust allowed on assignment of to a class-wide argument? Victor Porton <porton@narod.ru> - 2017-09-29 19:41 +0300

csiph-web