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=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID,
	REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,3839fc233928a180
X-Google-Attributes: gid103376,public
From: Stephen Leake <Stephen.Leake@gsfc.nasa.gov>
Subject: Re: "free"ing allocated memory
Date: 1997/11/18
Message-ID: <3471AC44.5CBD@gsfc.nasa.gov>#1/1
X-Deja-AN: 290456069
References: <34693B2D.C53FFFC3@access.hky.com>
Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA
Reply-To: Stephen.Leake@gsfc.nasa.gov
Newsgroups: comp.lang.ada
Date: 1997-11-18T00:00:00+00:00
List-Id: <comp.lang.ada>


-- Randy Kosarik wrote:
> 
> (This is the 4th time I am trying to send this to the newsgroup so,
> please disregard any copies if they make it here.... ISP has a
> newsserver problem)
> 
> Hi,
> 
> I have a project in school that is completed with the exception of one
> part. Releasing the memory that I am no longer using in
> my linked lists. While the program would never use all of the memory in
> the machine, I do not like the idea of making my code
> any sloppier than I already do (experience should remove my wasteful
> code <HOPEFULLY!>).

A great attitude; you'll make a great programmer someday.

> I allocate/create the new memory blocks with this routine.. But I cannot
> seem to figure out how to "free" the memory in Ada.

You need to instantiate Ada.Unchecked_Conversion; look in your text or
ask your prof for details (s/he may be postponing teaching this for a
good reason). The "Unchecked" in the name is a warning that you are
responsible for ensuring you don't "free" something that is still being
used; this is known as the "dangling pointer" problem.

- Stephe