Re: gnoga build fails on Mac

[Roger <rogermcm2@gmail.com>]

On Sunday, June 21, 2020 at 6:41:58 PM UTC+10, Dmitry A. Kazakov wrote:
> On 21/06/2020 09:57, Roger wrote:
> > Mac Mini (2018)
> > OSX 10.15.5
> > XCode 11.5
> > GNAT  Community Edition 2020
> > 
> > Attempting to build git clone git://git.code.sf.net/p/gnoga/code gnoga.
> > 
> > First problem with -gnat05 flag which I overcame but probably not the correct way.
> > Second, killer, problem:
> > object-handle.adb:153:22: access attribute cannot be used as actual for universal_access equality
> > object-handle.adb:163:23: access attribute cannot be used as actual for universal_access equality
> > 
> > How can I fix this?
> 
> GNAT CE 2020 does not accept comparisons like:
> 
>     procedure Foo (X : access T) is
>     begin
>        ...
>        if Y'Access = X then
>        ...
> 
> I cannot say anything about legality of such comparisons, maybe the 
> change is related to the upcoming standard, maybe it was never legal.
> 
> The latest version 4.50 of the Simple Components fixes the issue by 
> replacing access types comparison with by address comparison. [*]
> 
>     http://www.dmitry-kazakov.de/ada/components.htm
> 
> Replace the offending source files and it should compile again.
> 
> -------------------
> * I don't know the motivation behind forbidding comparison of access 
> attribute, probably some obscure unlikely portability case. Comparing 
> addresses would be less safe, for sure, but not much.
> 
> -- 
> Regards,
> Dmitry A. Kazakov
> http://www.dmitry-kazakov.de

Thanks,
That problem is fixed.
However, I now have another problem that I don't know how to fix that is not part of Simple Components but presumably due to GNAT CE 2020 restrictions.
gnoga-gui-view-docker.adb:117:40: implicit conversion of anonymous access parameter not allowed
and other similar errors in gnoga-gui-view-docker.adb:117:40