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From: "ophir.geffen@gmail.com" <ophir.geffen@gmail.com>
Newsgroups: comp.lang.ada
Subject: using put procedure with a generic package
Date: Wed, 7 May 2008 20:27:19 -0700 (PDT)
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Date: 2008-05-07T20:27:19-07:00
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Hi
I'm trying to write a generic queue package with a Put procedure in it
like this...

* queues.ads:
with Ada.Text_IO;
generic
  type Item is private;
  with procedure Item_Put(The_Item : in Item);
package Queues is
  type Queue is private;
  ...
  procedure Put(The_Item : in Item); --- this uses Item_Put
  ...
end Queues;

* and use it in test_queues.adb:
with Ada.Text_IO, Queues;
use Ada.Text_IO;
procedure Test_Queues is
  package Int_IO is new Ada.Text_IO.Integer_IO(Integer);
  package Int_Queues is new Queues(Item => Integer, Item_Put =>
Int_IO.Put); --- error here
...
end Test_Queues;

The package compiles on its own, but when I try to compile Test_Queues
there is an error:
no visible subprogram matches the specification for "Item_Put"
What is the problem and how can I solve it?
The package worked when it was a non generic package and I had Item
defined as a private subtype.

Btw, I use Ada 95 with gnat.

Thanks in advance