Re: Problem with array objects

From	Ian Collins <ian-news@hotmail.com>
Newsgroups	comp.lang.c++
Subject	Re: Problem with array objects
Date	2011-05-25 08:15 +1200
Message-ID	<942hvfFuc5U3@mid.individual.net> (permalink)
References	(13 earlier) <AQOCp.13100$Ky.1561@newsfe24.ams2> <qZGdnbsWxKGzJkbQnZ2dnUVZ8h-dnZ2d@giganews.com> <ZaRCp.9445$2E6.1297@newsfe18.ams2> <hKidnekJ2PNbfkbQnZ2dnUVZ8sSdnZ2d@giganews.com> <HbUCp.9426$5C7.5793@newsfe10.ams2>

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On 05/25/11 08:04 AM, Paul wrote:
> "Leigh Johnston"<leigh@i42.co.uk>  wrote:
>> On 24/05/2011 17:39, Paul wrote:
>>>
>>> What you say doesn't make sense. You say the compiler KNOWS the address
>>> of the array(whether it be a relative address or otherwise is
>>> irrelevant).
>>> How does it KNOW this address? It cannot KNOW this address unless it
>>> stores it someplace.
>>
>> What I said makes perfect sense if you are not dense.  The address is
>> calculated using an offset to something else (such as a stack frame
>> pointer or a 'this' pointer).  For example for an array on the stack the
>> compiler KNOWS that array element n is located at stack frame pointer + o
>> bytes; if n is a constant then o can be a constant known at compile time;
>> if n is not a constant then all we need is a simple effective address
>> calculation involving the stack frame pointer, n and the sizeof an element
>> to determine the address of element n.
>>
> The address cannot be calculated with random numbers. The address must be
> known, whether it is known as an offset or a real address is irrelevant.
> This known address must be stored in an object someplace.

On most common implementations, that place is the (or a) stack pointer.

Why do find this so hard?  or are you being deliberately obtuse?

If I write "int n;" do you expect there to be some mythical object 
storing the address of n?

Now here's the big one:

If there is an object that stores the address, where is the address of 
that object stored?

-- 
Ian Collins

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Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-14 11:20 -0500
  Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-14 23:59 +0100
    Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-17 12:59 -0500
      Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-18 19:36 +0100
        Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-19 13:20 -0500
          Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-20 14:29 +0100
            Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-23 13:53 -0500
              Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-23 22:53 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-23 23:04 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-23 23:19 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-24 02:26 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-24 13:16 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-24 14:58 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-24 15:05 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-24 17:39 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-24 17:58 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-24 21:04 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-24 21:11 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 00:12 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-25 00:33 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 11:39 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-25 12:04 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 12:56 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-25 13:15 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 16:36 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-25 16:47 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 17:15 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-25 17:39 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 21:09 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-25 22:24 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 01:28 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-25 09:57 -0400
                Re: Problem with array objects "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-05-25 16:50 +0200
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-25 12:01 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 16:59 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-25 12:56 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 21:46 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-25 20:02 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 01:37 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-26 09:08 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 15:19 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-26 14:45 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 21:02 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-27 09:34 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 14:46 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-27 15:07 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 21:42 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-27 19:34 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 01:24 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-28 10:58 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 19:41 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-28 20:38 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-29 12:32 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-29 10:05 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-29 20:13 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-29 19:38 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-30 17:01 +0100
                Re: Problem with array objects Thomas David Rivers <rivers@dignus.com> - 2011-05-31 09:45 -0400
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 20:33 +0100
                Re: Problem with array objects Joshua Maurice <joshuamaurice@gmail.com> - 2011-05-27 17:44 -0700
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 03:11 +0100
                Re: Problem with array objects Öö Tiib <ootiib@hot.ee> - 2011-05-28 19:21 -0700
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-29 12:50 +0100
                Re: Problem with array objects Öö Tiib <ootiib@hot.ee> - 2011-05-29 07:21 -0700
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-29 15:30 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-29 20:43 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-29 21:51 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 03:08 +0100
                Re: Problem with array objects Pete Becker <pete@versatilecoding.com> - 2011-05-30 17:39 -1000
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 06:05 +0100
                Re: Problem with array objects Pete Becker <pete@versatilecoding.com> - 2011-05-31 09:38 -1000
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 20:50 +0100
                Re: Problem with array objects SG <s.gesemann@gmail.com> - 2011-05-31 02:23 -0700
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 13:29 +0100
                Re: Problem with array objects "Fred Zwarts \(KVI\)" <F.Zwarts@KVI.nl> - 2011-05-31 15:17 +0200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 20:43 +0100
                Re: Problem with array objects Michael Doubez <michael.doubez@free.fr> - 2011-05-31 02:43 -0700
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-31 14:38 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 20:45 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-31 21:11 +0100
                Re: Problem with array objects Michael Doubez <michael.doubez@free.fr> - 2011-06-01 00:46 -0700
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-29 20:29 +0100
                Re: Problem with array objects Joshua Maurice <joshuamaurice@gmail.com> - 2011-05-29 23:11 -0700
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-25 08:15 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-24 22:23 +0100
                Re: Problem with array objects Joshua Maurice <joshuamaurice@gmail.com> - 2011-05-24 17:01 -0700
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 11:48 +0100
                Re: Problem with array objects gwowen <gwowen@gmail.com> - 2011-05-25 04:06 -0700
                Re: Problem with array objects Joshua Maurice <joshuamaurice@gmail.com> - 2011-05-25 13:50 -0700
                Re: Problem with array objects "io_x" <a@b.c.invalid> - 2011-05-25 19:03 +0200
                Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-25 12:44 -0500
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-25 21:04 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-25 22:20 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 11:00 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-26 12:07 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 13:09 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-26 09:32 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 11:10 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-26 23:07 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 13:22 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-26 14:14 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 15:27 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-26 15:52 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 16:45 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-26 17:04 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 17:41 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-27 07:44 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 21:10 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-27 09:05 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 00:15 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-27 11:32 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 01:39 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 01:56 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-27 13:18 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 11:06 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-27 22:28 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 12:51 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-27 13:58 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 14:34 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-27 15:14 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-27 15:18 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 15:24 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-27 15:31 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 15:53 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-27 16:18 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 20:35 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-27 21:23 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 22:04 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-27 22:15 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 00:40 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 00:53 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 01:32 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 01:49 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-28 13:17 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 03:29 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-28 15:35 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 12:24 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-29 08:21 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 22:04 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-29 09:17 +1200
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-29 09:32 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 22:58 +0100
                Re: Problem with array objects Ian Collins <ian-news@hotmail.com> - 2011-05-29 10:06 +1200
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 23:51 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 03:20 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 12:34 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 12:56 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 13:49 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 14:48 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 15:10 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 19:35 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 19:59 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 20:17 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 20:44 +0100
                Re: Problem with array objects Leigh Johnston <leigh@i42.co.uk> - 2011-05-28 21:00 +0100
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 22:07 +0100
                Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-26 14:38 -0500
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-26 21:15 +0100
                Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-27 12:43 -0500
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-27 20:20 +0100
                Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-28 11:41 -0500
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-28 19:10 +0100
                Re: Problem with array objects "A. Bolmarcich" <aggedor@earl-grey.cloud9.net> - 2011-05-31 12:26 -0500
                Re: Problem with array objects "Paul" <pchristor@yahoo.co.uk> - 2011-05-31 20:49 +0100

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