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| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: 2D arrays, pointers, and pointer arithmetic: question |
| Date | 2012-08-29 11:37 -0700 |
| Organization | None to speak of |
| Message-ID | <lnbohty27l.fsf@nuthaus.mib.org> (permalink) |
| References | (2 earlier) <503BDC9D.9080008@verizon.net> <slrnk3q5lp.2lr.raka@scooter.fritz.box> <503D1D4C.6060505@verizon.net> <slrnk3rglh.1cj.raka@scooter.fritz.box> <k1l1gb$e34$1@dont-email.me> |
Eric Sosman <esosman@ieee-dot-org.invalid> writes:
> On 8/29/2012 3:20 AM, Adrian Ratnapala wrote:
>> [... about converting int* to void* for "%p" conversion ...]
>> BTW: I don't know if my misconception is "frequent" enough to warrant an
>> FAQ change, but it doesn't look like the FAQ covers this. Contra Eric,
>> 5.17 is about something else; 4.17 / 19.40 are closer but not quite
>> relevant.
>
> 5.17 is mostly about representations of null pointers, but
> not entirely. If you'll read the entire thing, you'll find two
> specific mentions of different pointer formats, plus a link to
> further examples.
>
> 14.17 and 19.40(d) are about `near' and `far', whose
> connection to the matter at hand eludes me.
`near` and `far`, which are of course non-standard, can result in
different pointer types having different sizes. Passing a `near`
or `far` pointer to printf with a "%p" format is likely to give
bad results in practice.
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Will write code for food.
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
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2D arrays, pointers, and pointer arithmetic: question gdotone@gmail.com - 2012-08-24 08:28 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Adrian Ratnapala <adrian.ratnapala@gmail.com> - 2012-08-24 08:41 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question James Kuyper <jameskuyper@verizon.net> - 2012-08-24 12:01 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question 88888 Dihedral <dihedral88888@googlemail.com> - 2012-08-24 11:10 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question gdotone@gmail.com - 2012-08-27 13:35 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question James Kuyper <jameskuyper@verizon.net> - 2012-08-27 16:46 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question Adrian Ratnapala <raka@scooter.fritz.box> - 2012-08-28 19:06 +0000
Re: 2D arrays, pointers, and pointer arithmetic: question Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-28 15:22 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question James Kuyper <jameskuyper@verizon.net> - 2012-08-28 15:34 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question Keith Thompson <kst-u@mib.org> - 2012-08-28 14:11 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question James Kuyper <jameskuyper@verizon.net> - 2012-08-28 17:26 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question "io_x" <a@b.c.invalid> - 2012-08-29 09:25 +0200
Re: 2D arrays, pointers, and pointer arithmetic: question Adrian Ratnapala <raka@scooter.fritz.box> - 2012-08-29 07:20 +0000
Re: 2D arrays, pointers, and pointer arithmetic: question James Kuyper <jameskuyper@verizon.net> - 2012-08-29 07:17 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question Adrian Ratnapala <raka@scooter.fritz.box> - 2012-08-29 11:41 +0000
Re: 2D arrays, pointers, and pointer arithmetic: question Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-29 08:21 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question Keith Thompson <kst-u@mib.org> - 2012-08-29 11:37 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Edward Rutherford <edward.p.rutherford79@REMOVETHIS.gmail.com> - 2012-08-29 20:05 +0000
Re: 2D arrays, pointers, and pointer arithmetic: question James Kuyper <jameskuyper@verizon.net> - 2012-08-29 17:27 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question Keith Thompson <kst-u@mib.org> - 2012-08-29 18:05 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Les Cargill <lcargill99@comcast.com> - 2012-08-29 20:14 -0500
Re: 2D arrays, pointers, and pointer arithmetic: question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-08-30 04:47 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Richard Damon <news.x.richarddamon@xoxy.net> - 2012-09-01 23:47 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question 88888 Dihedral <dihedral88888@googlemail.com> - 2012-09-02 04:43 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Richard Damon <news.x.richarddamon@xoxy.net> - 2012-09-02 23:12 -0400
Re: 2D arrays, pointers, and pointer arithmetic: question ais523 <ais523@nethack4.org> - 2012-08-30 11:35 +0000
Re: 2D arrays, pointers, and pointer arithmetic: question ralph <nt_consulting64@yahoo.com> - 2012-08-30 11:17 -0500
Re: 2D arrays, pointers, and pointer arithmetic: question Keith Thompson <kst-u@mib.org> - 2012-08-30 13:52 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Anders Wegge Keller <wegge@wegge.dk> - 2012-08-30 23:13 +0200
Re: 2D arrays, pointers, and pointer arithmetic: question ralph <nt_consulting64@yahoo.com> - 2012-08-31 16:37 -0500
Re: 2D arrays, pointers, and pointer arithmetic: question Barry Schwarz <schwarzb@dqel.com> - 2012-08-27 19:45 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Keith Thompson <kst-u@mib.org> - 2012-08-27 20:40 -0700
Re: 2D arrays, pointers, and pointer arithmetic: question Tim Rentsch <txr@alumni.caltech.edu> - 2012-09-07 06:28 -0700
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