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| From | BartC <bc@freeuk.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Why I use gcc |
| Date | 2016-10-08 21:28 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <ntbkt2$5fk$1@dont-email.me> (permalink) |
| References | (17 earlier) <8737k7x9ac.fsf@bsb.me.uk> <ntauf8$ld2$1@dont-email.me> <f1f4af5c-728f-4ad6-a4c8-6607248f5632@googlegroups.com> <ntbg89$kvu$1@dont-email.me> <87a8eewq95.fsf@bsb.me.uk> |
On 08/10/2016 21:16, Ben Bacarisse wrote:
> BartC <bc@freeuk.com> writes:
>
>> On 08/10/2016 19:27, supercat@casperkitty.com wrote:
>>> On Saturday, October 8, 2016 at 9:05:51 AM UTC-5, Bart wrote:
>>>> C type declarations are the way they are because of the 'declaration
>>>> mirrors use' rule.
>>>
>>> Unfortunately, declaration no longer follows use once initializers are added
>>> to the mix, since what is assigned to is not the expresison-like thing
>>> containing the variable, but rather the value itself. Consider:
>>>
>>> typedef unsigned *puint;
>>> void test1(void *vp)
>>> {
>>> puint *p = vp;
>>> *p = vp;
>>> }
>>>
>>> The declaration of p and use of p look very similar, but their behavior is
>>> very different. The declaration looks like it writes to *p, but it doesn't--
>>> it actually writes to "p" itself. The usage, however, does write to
>>> *p.
>
> You (supercat) are ascribing too much to this little phrase; it refers
> only the form, and so it *does* apply here: the form of the declaration
> (*p) does indeed follow that of the use (*p). (Of course the "use" in
> the declaration, by definition, will have the form of the declaration.)
>
>> Thanks, another one for my collection of quirks.
>
> No, it appears to be a misunderstanding. In this case the declaration
> does resemble the use.
When the use involves dereferencing the pointer. Anyway, too late, it's
already been added to my list.
It you see:
*p = 0;
at the top of a screen, you will think it dereferences p. Then you
scroll the page down one line and see:
T
*p = 0;
and realise there is no dereference (and that it is not a regular
assignment). That is quite a dramatic difference between the two.
--
Bartc
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Why I use gcc BartC <bc@freeuk.com> - 2016-09-26 14:31 +0100
Re: Why I use gcc David Brown <david.brown@hesbynett.no> - 2016-09-26 15:45 +0200
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-26 15:22 +0100
Re: Why I use gcc David Brown <david.brown@hesbynett.no> - 2016-09-26 16:31 +0200
Re: Why I use gcc Tim Rentsch <txr@alumni.caltech.edu> - 2016-09-27 15:05 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-28 00:42 +0100
Re: Why I use gcc Tim Rentsch <txr@alumni.caltech.edu> - 2016-09-28 09:50 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-28 18:39 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-07 12:28 +0100
Re: Why I use gcc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-07 04:36 -0700
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-07 05:31 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-07 14:00 +0100
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-07 07:48 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-07 17:36 +0100
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-07 10:38 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-07 19:47 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-07 12:25 -0700
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-07 12:26 -0700
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-07 13:10 -0700
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-07 13:22 -0700
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-07 14:13 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 01:15 +0100
Re: Why I use gcc James Harris <james.harris.1@gmail.com> - 2016-10-08 10:42 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 11:36 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-08 14:25 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 15:05 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 16:29 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-08 17:21 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-08 16:39 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 16:58 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-08 21:15 +0100
Re: Why I use gcc supercat@casperkitty.com - 2016-10-08 11:27 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 20:09 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-08 21:16 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 21:28 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-09 01:19 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-09 01:36 +0100
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-08 09:32 -0700
Re: Why I use gcc Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-09 03:44 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-09 12:07 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-09 12:12 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-09 12:37 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-09 13:57 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-09 14:32 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-10-09 20:00 +0100
Re: Why I use gcc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-09 13:14 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-09 22:54 +0100
Re: Why I use gcc Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-15 14:40 -0700
Re: Why I use gcc James Kuyper <jameskuyper@verizon.net> - 2016-10-07 10:37 -0400
Re: Why I use gcc supercat@casperkitty.com - 2016-10-07 07:52 -0700
Re: Why I use gcc jameskuyper@verizon.net - 2016-10-07 09:10 -0700
Re: Why I use gcc supercat@casperkitty.com - 2016-10-07 10:48 -0700
Re: Why I use gcc jameskuyper@verizon.net - 2016-10-07 16:21 -0700
Re: Why I use gcc supercat@casperkitty.com - 2016-10-08 11:15 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-07 17:12 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-07 12:20 -0700
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-07 12:32 -0700
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-09-26 14:45 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-26 15:12 +0100
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-09-26 15:26 +0100
Re: Why I use gcc supercat@casperkitty.com - 2016-09-26 08:00 -0700
Re: Why I use gcc Tim Rentsch <txr@alumni.caltech.edu> - 2016-09-28 10:49 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-26 17:30 +0100
Re: Why I use gcc David Brown <david.brown@hesbynett.no> - 2016-09-26 21:12 +0200
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-09-26 22:09 +0200
Re: Why I use gcc supercat@casperkitty.com - 2016-09-26 13:32 -0700
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-09-26 23:14 +0200
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-09-26 22:47 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 01:13 +0100
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-09-27 01:18 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-09-26 17:41 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 02:01 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-09-27 08:41 -0700
Re: Why I use gcc James Harris <james.harris.1@gmail.com> - 2016-09-27 01:41 +0100
Re: Why I use gcc jameskuyper@verizon.net - 2016-09-26 18:15 -0700
Re: Why I use gcc Gareth Owen <gwowen@gmail.com> - 2016-09-27 20:59 +0100
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-09-27 21:50 +0100
Re: Why I use gcc Tim Rentsch <txr@alumni.caltech.edu> - 2016-09-28 06:26 -0700
Re: Why I use gcc gazelle@shell.xmission.com (Kenny McCormack) - 2016-09-27 23:23 +0000
Re: Why I use gcc Noob <root@127.0.0.1> - 2016-10-08 00:12 +0200
Re: Why I use gcc James Kuyper <jameskuyper@verizon.net> - 2016-10-07 23:11 -0400
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-08 10:58 +0100
Re: Why I use gcc jameskuyper@verizon.net - 2016-10-08 07:07 -0700
Re: Why I use gcc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-07 21:44 -0700
Re: Why I use gcc David Brown <david.brown@hesbynett.no> - 2016-09-27 09:48 +0200
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 11:22 +0100
Re: Why I use gcc David Brown <david.brown@hesbynett.no> - 2016-09-27 13:52 +0200
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-09-27 14:47 +0200
Re: Why I use gcc David Brown <david.brown@hesbynett.no> - 2016-09-27 15:18 +0200
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 14:38 +0100
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-09-27 17:21 +0200
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-09-27 17:17 +0200
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-09-27 08:52 -0700
Re: Why I use gcc Robert Wessel <robertwessel2@yahoo.com> - 2016-09-30 02:00 -0500
Re: Why I use gcc supercat@casperkitty.com - 2016-09-27 07:18 -0700
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-09-27 08:46 -0700
Re: Why I use gcc supercat@casperkitty.com - 2016-09-27 09:11 -0700
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-27 13:33 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 14:13 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-27 15:30 +0100
Re: Why I use gcc supercat@casperkitty.com - 2016-09-27 08:29 -0700
Re: Why I use gcc supercat@casperkitty.com - 2016-09-27 07:11 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-26 21:43 +0100
Re: Why I use gcc raltbos@xs4all.nl (Richard Bos) - 2016-09-30 17:50 +0000
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 01:04 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-09-26 17:39 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 01:49 +0100
Re: Why I use gcc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-27 11:39 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-09-27 11:56 +0100
Re: Why I use gcc Tim Rentsch <txr@alumni.caltech.edu> - 2016-09-27 15:15 -0700
Re: Why I use gcc David Brown <david.brown@hesbynett.no> - 2016-09-28 08:55 +0200
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-09-26 22:11 +0200
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-09-26 22:04 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-10 11:39 +0100
Re: Why I use gcc already5chosen@yahoo.com - 2016-10-10 07:32 -0700
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-10-10 16:17 +0100
Re: Why I use gcc Robert Wessel <robertwessel2@yahoo.com> - 2016-10-10 21:09 -0500
Re: Why I use gcc Richard Heathfield <rjh@cpax.org.uk> - 2016-10-11 04:18 +0100
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-11 10:56 +0100
Re: Why I use gcc already5chosen@yahoo.com - 2016-10-11 04:08 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-11 13:36 +0100
Re: Why I use gcc already5chosen@yahoo.com - 2016-10-11 06:20 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-11 14:29 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-11 09:31 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-11 19:38 +0100
Re: Why I use gcc supercat@casperkitty.com - 2016-10-11 12:23 -0700
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-10-11 23:19 +0200
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-11 23:26 +0100
Re: Why I use gcc jacobnavia <jacob@jacob.remcomp.fr> - 2016-10-12 09:01 +0200
Re: Why I use gcc supercat@casperkitty.com - 2016-10-12 08:55 -0700
Re: Why I use gcc already5chosen@yahoo.com - 2016-10-12 10:52 -0700
Re: Why I use gcc supercat@casperkitty.com - 2016-10-12 12:34 -0700
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-12 13:18 -0700
Re: Why I use gcc luser droog <luser.droog@gmail.com> - 2016-10-12 13:24 -0700
Re: Why I use gcc crankypuss <undisclosedUserid@gmail.com> - 2016-10-13 13:31 -0600
Re: Why I use gcc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-16 03:00 -0700
Re: Why I use gcc crankypuss <undisclosedUserid@gmail.com> - 2016-10-16 04:46 -0600
Re: Why I use gcc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-16 04:05 -0700
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-11 12:28 -0700
Re: Why I use gcc Thiago Adams <thiago.adams@gmail.com> - 2016-10-11 13:24 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-11 21:28 +0100
Re: Why I use gcc gazelle@shell.xmission.com (Kenny McCormack) - 2016-10-11 20:43 +0000
Re: Why I use gcc Robert Wessel <robertwessel2@yahoo.com> - 2016-10-11 23:40 -0500
Re: Why I use gcc already5chosen@yahoo.com - 2016-10-11 04:40 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-10 18:19 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-10 09:08 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-10 18:04 +0100
Re: Why I use gcc supercat@casperkitty.com - 2016-10-10 10:39 -0700
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-10 11:25 -0700
Re: Why I use gcc Jerry Stuckle <jstucklex@attglobal.net> - 2016-10-10 17:05 -0400
Re: Why I use gcc supercat@casperkitty.com - 2016-10-10 14:46 -0700
Re: Why I use gcc BartC <bc@freeuk.com> - 2016-10-15 13:39 +0100
Re: Why I use gcc Keith Thompson <kst-u@mib.org> - 2016-10-15 13:40 -0700
Re: Why I use gcc already5chosen@yahoo.com - 2016-10-15 13:46 -0700
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