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From: keld.nielsen@agip.it (Keld Lund Nielsen)
Newsgroups: comp.lang.ada
Subject: Visibility problems in Parent.Child configuration
Date: 30 Jul 2002 04:41:47 -0700
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Date: 2002-07-30T11:41:47+00:00
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Dear All,

a question regarding type visibility. The configuration is as follows:

----file Parent.ads:
 with Ada.Numerics.Generic_Elementary_Functions;
package Parent is

   package Float_64 is
      type Instance is digits 15;
        for Instance'Size use 64;
        package Operations is
          new Ada.Numerics.Generic_Elementary_Functions( Instance );
   end Float_64;

end Parent;

----file Parent.Generic_Child.ads:
 generic
  type Instance is private;

package Parent.Generic_Child is
   --void...
end Parent.Generic_Child;


Then I create a test system with the structure:

  Test.Parent.Child

but when I try to create an instance of Generic_Child or just declare
a subtype of the Parent.Float_64.Instance, then the compiler protests
and gives the message that Float_64 is not in Parent!

Moreover, when instantiated from a simple package - say "my_package" -
then it works perfectly, yet not from the "Test.Parent.Child".

I have swept through my "Cohen" and other books, however I have not
found any solution to the problem - hope you can help me.

Cheers
Keld