Re: C pointer semantics with dynamically allocated struct

From	Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups	comp.lang.c
Subject	Re: C pointer semantics with dynamically allocated struct
Date	2015-08-12 15:34 +0100
Organization	A noiseless patient Spider
Message-ID	<8737zo8tjt.fsf@bsb.me.uk> (permalink)
References	(9 earlier) <87pp2s94fh.fsf@bsb.me.uk> <mqfbdg$ur6$1@speranza.aioe.org> <ccc561dd-6029-471f-ad7e-9758bd1df180@googlegroups.com> <87egj88x5n.fsf@bsb.me.uk> <6cd37536-cf9d-422a-aa05-b801ced9fb42@googlegroups.com>

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"Rick C. Hodgin" <rick.c.hodgin@gmail.com> writes:

> On Wednesday, August 12, 2015 at 9:16:30 AM UTC-4, Ben Bacarisse wrote:
>> "Rick C. Hodgin" <rick.c.hodgin@gmail.com> writes:
>> > In my humble opinion...
>> > I would not worry about this issue.
>> 
>> In my opinion you should worry about it.  Not because you'll write code
>> that breaks on machine X (though who knows what your code will be
>> running on the 40 years time) but because the cast tells the reader what
>> you mean and the union does not.  It's about being clear by writing what
>> you mean.
>
> The cast provides explicit information line-by-line, but the union also
> tells you this information by the type of that union member, and without
> the mechanical requirement of typing out casts line-by-line.  In addition,
> upon seeing that the pointer in use is part of a union (something a self-
> respecting editor should provide in some way when hovering over the
> variable), then it will be clear to the adequately versed C developer
> that the reason a union is being used is because it's a shared data
> type.

I would hope a C programmer would come to a very different conclusion.
What's more, I am sure you would agree that they would (and should) come
to a different conclusion if we were not talking about pointers.

Anyway, I don't expect to change your mind, but I hope any learners who
might come across this thread will see the danger in writing code that
does not say what the programmer means, even if if it almost always
works.

>> > First of all it will only affect the most obtuse or
>> > special-equipment compilers.  Second, you can use some compile-time
>> > checks to ensure things you do rely upon are the same size, such as
>> > comparing sizeof(void*) to sizeof(other*), etc., and if they are
>> > different reporting it during compilation with #if blocks.
>> 
>> It's not just about size.
>
> Then it would be possible to also use a runtime test which, if it fails,
> reports that condition and exits out explaining in comments how it can
> be fixed.

Two points: First, can you really do that (and I mean "you" not "one")?
Can you really write a compile-time test that checks the actual
assumptions that your suggested use of unions relies on, or are you just
speculating that it must, surely, be possible?

Second, it's usually possible to test for unwarranted assumption being
made by come bit of code, but it's much better simply not to make those
unwarranted assumptions in the first place.

<snip>
> I just don't believe the burden should be on every C developer to write
> code for every possible architecture all the time, especially when they're
> targeting a handful of architectures where it's not at issue.

But here we are simply talking about doing it right.  There is no
burden in writing the code the correct and portable way.  There is no
possible justification (that I can see) for doing it the wrong way.

<snip>
-- 
Ben.

Thread

C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-11 20:48 +0200
  Re: C pointer semantics with dynamically allocated struct Melzzzzz <mel@zzzzz.com> - 2015-08-11 20:59 +0200
  Re: C pointer semantics with dynamically allocated struct Melzzzzz <mel@zzzzz.com> - 2015-08-11 21:03 +0200
    Re: C pointer semantics with dynamically allocated struct James Kuyper <jameskuyper@verizon.net> - 2015-08-11 15:32 -0400
  Re: C pointer semantics with dynamically allocated struct jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-11 21:03 +0200
    Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-11 21:47 +0200
  Re: C pointer semantics with dynamically allocated struct jt@toerring.de (Jens Thoms Toerring) - 2015-08-11 19:14 +0000
    Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-11 21:50 +0200
      Re: C pointer semantics with dynamically allocated struct James Kuyper <jameskuyper@verizon.net> - 2015-08-11 16:12 -0400
        Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-11 22:45 +0200
          Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 03:08 +0100
  Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-11 20:24 +0100
    Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-11 21:51 +0200
      Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-11 13:32 -0700
        Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-11 13:36 -0700
          Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-11 22:57 +0200
            Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-11 23:23 +0200
            Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-11 16:47 -0700
              Re: C pointer semantics with dynamically allocated struct glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-11 23:46 +0000
                Re: C pointer semantics with dynamically allocated struct morphex@gmail.com (Morten W. Petersen) - 2015-08-12 02:05 +0200
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-11 17:16 -0700
                Re: C pointer semantics with dynamically allocated struct Richard Heathfield <rjh@cpax.org.uk> - 2015-08-12 01:11 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-11 17:35 -0700
                Re: C pointer semantics with dynamically allocated struct Richard Heathfield <rjh@cpax.org.uk> - 2015-08-12 01:51 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 03:02 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-11 19:50 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-11 20:09 -0700
                Music and programming (was: Re: C pointer semantics with dynamically allocated struct) "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 11:54 +0200
                Re: Music and programming (was: Re: C pointer semantics with dynamically allocated struct) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 03:35 -0700
                Re: Music and programming "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 13:00 +0200
                Re: Music and programming Richard Heathfield <rjh@cpax.org.uk> - 2015-08-12 11:46 +0100
                Re: Music and programming "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 13:06 +0200
                Re: Music and programming Richard Heathfield <rjh@cpax.org.uk> - 2015-08-12 13:08 +0100
                Re: Music and programming raltbos@xs4all.nl (Richard Bos) - 2015-08-12 12:18 +0000
                Re: Music and programming "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 14:26 +0200
                Re: Music and programming Richard Heathfield <rjh@cpax.org.uk> - 2015-08-12 13:36 +0100
                Re: Music and programming "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 15:13 +0200
                Re: Music and programming David Brown <david.brown@hesbynett.no> - 2015-08-12 16:10 +0200
                Re: C pointer semantics with dynamically allocated struct crisdunbar@gmail.com - 2015-08-13 15:47 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 04:52 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 05:01 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 05:10 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-12 09:17 +0200
          Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 02:56 +0100
            Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 04:07 +0200
              Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 03:45 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 12:10 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 11:39 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-12 13:41 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 04:59 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 14:16 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 06:37 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 15:34 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 08:17 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 08:38 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 17:19 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 09:52 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 22:40 +0100
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-13 13:31 +0200
                Re: C pointer semantics with dynamically allocated struct Richard Damon <Richard@Damon-Family.org> - 2015-08-14 20:39 -0400
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 13:03 -0700
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 14:16 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-09-06 11:19 +0200
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-06 18:15 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-09-07 09:13 +0200
                Re: C pointer semantics with dynamically allocated struct Richard Damon <Richard@Damon-Family.org> - 2015-08-12 08:07 -0400
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 14:08 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 10:24 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 20:45 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-13 04:19 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 13:18 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-16 15:43 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-16 21:32 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 12:00 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-17 15:50 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 22:28 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-18 01:34 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-19 08:40 +0200
                Re: C pointer semantics with dynamically allocated struct luser droog <luser.droog@gmail.com> - 2015-08-12 13:35 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 15:01 -0700
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 11:39 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-09-06 11:24 +0200
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-06 18:09 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 10:17 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-12 20:58 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-12 19:59 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-13 13:47 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 05:35 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-13 15:59 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 07:57 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-13 17:46 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 09:15 -0700
                Re: C pointer semantics with dynamically allocated struct Richard Heathfield <rjh@cpax.org.uk> - 2015-08-13 17:21 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 09:26 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 19:40 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 11:43 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 21:30 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 14:56 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-14 08:51 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-14 00:03 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 17:22 +0100
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-14 09:09 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-14 11:19 +0100
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-14 13:07 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-14 19:19 +0100
                Re: C pointer semantics with dynamically allocated struct James Kuyper <jameskuyper@verizon.net> - 2015-08-14 14:32 -0400
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-16 16:52 +0200
                Re: C pointer semantics with dynamically allocated struct Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-08-16 18:34 +0000
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-17 07:48 +0200
                Re: C pointer semantics with dynamically allocated struct Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-08-18 18:08 +0000
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-19 09:36 +0200
                Re: C pointer semantics with dynamically allocated struct David Thompson <dave.thompson2@verizon.net> - 2015-08-30 03:03 -0400
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-30 16:59 +0200
                Re: C pointer semantics with dynamically allocated struct glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-30 20:12 +0000
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 14:36 -0700
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 12:39 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-14 07:56 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-14 17:09 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-14 11:38 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-14 20:31 +0100
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 15:17 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-09-06 11:44 +0200
                Re: C pointer semantics with dynamically allocated struct Richard Damon <Richard@Damon-Family.org> - 2015-08-14 20:56 -0400
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-14 18:09 -0700
                Re: C pointer semantics with dynamically allocated struct Richard Damon <Richard@Damon-Family.org> - 2015-08-14 22:26 -0400
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-14 19:44 -0700
                Re: C pointer semantics with dynamically allocated struct glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-15 04:15 +0000
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-16 19:00 +0200
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-16 19:00 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-16 20:20 +0200
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-16 17:18 -0700
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-16 23:03 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 00:52 +0200
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-17 00:29 +0100
                A simpler version of C (was: Re: C pointer semantics with dynamically allocated struct) "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 02:36 +0200
                Re: C pointer semantics with dynamically allocated struct glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-17 01:47 +0000
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-17 11:27 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 12:40 +0200
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-17 12:07 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 13:36 +0200
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-17 13:14 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 14:09 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-17 05:23 -0700
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 14:35 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-17 05:45 -0700
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 14:58 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-17 06:23 -0700
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 15:30 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-17 06:46 -0700
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 15:47 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-17 06:56 -0700
                Re: C pointer semantics with dynamically allocated struct fir <profesor.fir@gmail.com> - 2015-08-17 08:57 -0700
                Re: C pointer semantics with dynamically allocated struct Richard Heathfield <rjh@cpax.org.uk> - 2015-08-17 15:37 +0100
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-17 15:03 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 15:12 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-17 16:15 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 16:45 +0200
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-17 15:58 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 22:11 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-17 22:24 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 22:31 +0200
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-17 15:04 -0700
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 23:41 +0200
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-17 17:58 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-17 14:53 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-17 16:58 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 22:16 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-18 01:31 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-19 08:51 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-19 09:56 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-20 08:52 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-20 10:09 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-20 12:48 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-20 13:00 +0200
                Re: C pointer semantics with dynamically allocated struct Ike Naar <ike@iceland.freeshell.org> - 2015-08-20 13:53 +0000
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-20 16:36 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-20 07:39 -0700
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-20 09:09 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-20 09:08 -0700
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-21 10:15 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-21 02:17 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-21 14:23 +0100
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-21 15:44 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-21 14:59 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-21 07:03 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-23 21:50 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-21 16:25 +0200
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-21 07:34 -0700
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-21 20:44 +0100
                Re: C pointer semantics with dynamically allocated struct raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:10 +0000
                Re: C pointer semantics with dynamically allocated struct glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-17 20:08 +0000
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-17 09:33 -0700
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-17 22:20 +0200
                Re: C pointer semantics with dynamically allocated struct James Kuyper <jameskuyper@verizon.net> - 2015-08-17 17:28 -0400
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-17 16:42 -0700
                Re: C pointer semantics with dynamically allocated struct James Kuyper <jameskuyper@verizon.net> - 2015-08-17 19:39 -0400
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-17 16:15 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-18 00:19 +0100
                Re: C pointer semantics with dynamically allocated struct Richard Damon <Richard@Damon-Family.org> - 2015-08-17 08:32 -0400
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-17 18:02 +0100
                Re: C pointer semantics with dynamically allocated struct Rosario19 <Ros@invalid.invalid> - 2015-08-22 08:25 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-17 14:46 +0200
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-17 09:45 -0700
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-17 18:55 +0100
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-08-17 12:11 -0700
                Re: C pointer semantics with dynamically allocated struct Bartc <bc@freeuk.com> - 2015-08-17 23:07 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-17 15:13 -0700
                Re: C pointer semantics with dynamically allocated struct glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-17 22:56 +0000
                Re: C pointer semantics with dynamically allocated struct glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-17 20:04 +0000
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 14:46 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 07:33 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-13 16:39 +0200
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 19:20 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 11:55 -0700
                Re: C pointer semantics with dynamically allocated struct Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 21:11 +0100
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-13 15:15 -0700
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-14 09:29 +0200
                Re: C pointer semantics with dynamically allocated struct James Kuyper <jameskuyper@verizon.net> - 2015-08-14 08:01 -0400
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-14 14:46 +0200
                Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-16 19:14 +0200
                Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-17 08:01 +0200
                Re: C pointer semantics with dynamically allocated struct Richard Damon <Richard@Damon-Family.org> - 2015-08-12 23:30 -0400
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 12:45 -0700
                Re: C pointer semantics with dynamically allocated struct Keith Thompson <kst-u@mib.org> - 2015-09-05 16:11 -0700
                Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-09-05 22:32 -0700
                Re: C pointer semantics with dynamically allocated struct Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-06 13:21 -0700
              Re: C pointer semantics with dynamically allocated struct David Brown <david.brown@hesbynett.no> - 2015-08-12 09:22 +0200
            Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-11 19:43 -0700
        Re: C pointer semantics with dynamically allocated struct "Morten W. Petersen" <morphex@gmail.com> - 2015-08-11 22:52 +0200
          Re: C pointer semantics with dynamically allocated struct "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-11 16:01 -0700
  Re: C pointer semantics with dynamically allocated struct Rosario19 <Ros@invalid.invalid> - 2015-08-12 11:13 +0200

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