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From: swhalen@netcom.com
Subject: Re: What is wrong here? (Generic and controlled types)
Date: 2000/04/03
Message-ID: <8catei$n8$1@slb6.atl.mindspring.net>#1/1
X-Deja-AN: 606213640
References: <38E871E6.8D9EBE71@lufmech.rwth-aachen.de>
 <8caebe$6us$1@nnrp1.deja.com> <8cahmn$apq$1@nnrp1.deja.com>
Organization: ?
User-Agent: tin/pre-1.4-19990517 ("Psychonaut") (UNIX) (SunOS/4.1.4 (sun4m))
Newsgroups: comp.lang.ada
Date: 2000-04-03T00:00:00+00:00
List-Id: <comp.lang.ada>

Robert Dewar <robert_dewar@my-deja.com> wrote:
: It is almost always possible to work around this trivially by
: simply including a controlled component in the type instead
: of making the entire type controlled.

: P.S. it is hard to see how the GNAT message could be any
: clearer, suggestions welcome!


29.    package Real_Vectors is new Generic_Vectors(Real, Index, Zero);
       |
    >>> instantiation error at generic_vectors.ads:23
    >>> controlled type must be declared at the library level
    >>>   (consider including controlled component instead
    >>>    of making entire type controlled?)

I know I'd appreciate getting a helpful hint like this, even
though I have no reason to expect the compiler to do so.

Steve

-- 
{===--------------------------------------------------------------===}
                Steve Whalen     swhalen@netcom.com
{===--------------------------------------------------------------===}