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From: Christoph Grein <christoph.grein@eurocopter.com>
Newsgroups: comp.lang.ada
Subject: Re: newbie can't get exceptions to work!
Date: Thu, 5 Apr 2001 07:26:29 +0200 (MET DST)
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Date: 2001-04-05T07:26:29+02:00

   package INT_STACK  is new GEN_STACK(ELM => INTEGER, LEN => 10);
   package INT2_STACK is new GEN_STACK(ELM => INTEGER, LEN =>  5);

With these two instantiations, you get two exceptions STACK_ERROR:
  INT_STACK.STACK_ERROR and INT2_STACK.STACK_ERROR.

So write:

  ...
exception
  when INT_STACK.STACK_ERROR | INT2_STACK.STACK_ERROR =>
    Handle_them;  -- note that you do not need a begin end block here.
end;