From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID
	autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,e6c9800e35ccfeee
X-Google-Attributes: gid103376,public
From: bobduff@world.std.com (Robert A Duff)
Subject: Re: GNAT: Performance of String functions
Date: 1997/07/24
Message-ID: <EDtpyE.Mn@world.std.com>#1/1
X-Deja-AN: 258490614
References: <dewar.869405750@merv> <dewar.869632950@merv>
 <5r5cfh$irn$1@ratatosk.uio.no> <33D66563.3F86@link.com>
Organization: The World Public Access UNIX, Brookline, MA
Newsgroups: comp.lang.ada
Date: 1997-07-24T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <33D66563.3F86@link.com>, Samuel Mize  <smize@link.com> wrote:
>You can get all but 4 (normal assignment) with a limited variant
>record with a discriminant (max length).  To assign the value,
>you provide a "copy" routine.  Don't provide a default value
>for the discriminant, so the user will have to explicitly give
>a max size for each variable of this type.  (If you provide a
>default value, the implementation may allocate the subtype's
>max size for each record.)

No, the compiler should not allocate the max.  The thing is limited,
therefore its size can't change, therefore whatever size corresponds to
the default should be allocated (when the default is used).

- Bob