From: clubley@remove_me.eisner.decus.org-Earth.UFP   
      
   On 2025-11-17, Arne Vajhøj  wrote:   
   > Ada is generally pretty good.   
   >   
   > But I don't know if you noticed that the example gave a   
   > warning.   
   >   
      
   I noticed the warning, but I let it slide because I didn't want to   
   start _yet_ another argument about compiler flags and warnings, plus   
   the fact I have several other discussions going on at the moment. :-)   
      
   > The warning did not have an impact.   
   >   
   > But the same warning in another context can indicate   
   > huge problem.   
   >   
   > And I was surprised.   
   >   
      
   Interesting, but I've never encountered this because I never allow   
   compiler warnings to stand. They _always_ get fixed regardless of   
   language, even for own-time personal projects. In this case, I would   
   have noted the difference in sizes, gone "Simon, you silly twit!"   
   and fixed up the sizes. (It's only supposed to used in conversions   
   of the same size).   
      
   BTW, compilers which support it, regardless of language, always get   
   used by me in a mode which converts warnings to fatal errors.   
      
   The GNAT RM has more information:   
      
   https://docs.adacore.com/gnat_rm-docs/html/gnat_rm/gnat_rm/stand   
   rd_library_routines.html   
      
   Search for "Ada.Unchecked_Conversion (13.9)". It also tells you what happens,   
   at least in the case of GNAT, if you do try to use different sizes.   
      
   Once you read that, you will see where the value "1" is coming from.   
      
   Simon.   
      
   --   
   Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP   
   Walking destinations on a map are further away than they appear.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)