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| From | Ian Collins <ian-news@hotmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Casts on lvalues |
| Date | 2012-12-06 11:51 +1300 |
| Message-ID | <aia1eqF5qfmU2@mid.individual.net> (permalink) |
| References | (3 earlier) <tVKvs.786834$A%.8284@fx26.am4> <k9o2b3$bcb$1@dont-email.me> <KBMvs.279623$kt5.191450@fx08.am4> <50BF9F15.7060608@verizon.net> <rFPvs.640122$9D6.94777@fx27.am4> |
BartC wrote: > > My original example was > more like this: > > int* P; > > ++(char*)P; > > ie. treat P as as a char* pointer (so that on my machine, the value in P > increments by 1 instead of 4). Which may well result in P not being a valid pointer to an int, ending the world when it is dereferenced. Such a construct is like giving a 3 year old a box ox matches. C does have plenty of matches on offer, but they are normally in child proof boxes. If you want a pointer to walk through some data built from an arbitrary set of types, use a char*. -- Ian Collins
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Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-02 13:23 +0000
Re: Casts on lvalues SG <sgesemann@gmail.invalid> - 2012-12-02 14:40 +0100
Re: Casts on lvalues Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-12-02 13:53 +0000
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-06 12:26 +0000
Re: Casts on lvalues Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-12-06 15:15 +0000
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-06 12:05 -0800
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-02 12:34 -0800
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-02 21:18 +0000
Re: Casts on lvalues Willem <willem@turtle.stack.nl> - 2012-12-05 22:36 +0000
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 23:46 +0000
Re: Casts on lvalues Willem <willem@turtle.stack.nl> - 2012-12-06 18:35 +0000
Re: Casts on lvalues pete <pfiland@mindspring.com> - 2012-12-02 16:21 -0500
Re: Casts on lvalues Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-12-02 17:10 -0500
Re: Casts on lvalues pete <pfiland@mindspring.com> - 2012-12-02 18:50 -0500
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-02 19:14 -0500
Re: Casts on lvalues falk@rahul.net (Edward A. Falk) - 2012-12-04 23:57 +0000
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 01:35 +0000
Re: Casts on lvalues Piotr Kalinowski <pitkali@gmail.com> - 2012-12-05 16:07 +0100
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 16:47 +0000
Re: Casts on lvalues Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-12-05 13:04 -0500
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 18:39 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-05 14:23 -0500
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 22:11 +0000
Re: Casts on lvalues Ian Collins <ian-news@hotmail.com> - 2012-12-06 11:51 +1300
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 23:58 +0000
Re: Casts on lvalues Piotr Kalinowski <pitkali@gmail.com> - 2012-12-06 22:00 +0100
Re: Casts on lvalues glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-12-06 03:05 +0000
Re: Casts on lvalues Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-12-05 14:43 -0500
Re: Casts on lvalues Greg Martin <greg@softsprocket.com> - 2012-12-05 12:25 -0800
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 21:57 +0000
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-05 16:09 -0800
Re: Casts on lvalues Philipp Thomas <kthomas@linux01.gwdg.de> - 2012-12-07 01:24 +0100
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-06 17:22 -0800
Re: Casts on lvalues Öö Tiib <ootiib@hot.ee> - 2012-12-07 00:31 -0800
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-07 08:18 -0500
Re: Casts on lvalues Öö Tiib <ootiib@hot.ee> - 2012-12-07 09:07 -0800
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-07 11:01 -0800
Re: Casts on lvalues glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-12-07 21:57 +0000
Re: Casts on lvalues Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-12-07 22:29 +0000
Re: Casts on lvalues glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-12-08 00:04 +0000
Re: Casts on lvalues lawrence.jones@siemens.com - 2012-12-15 16:51 -0500
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-15 15:48 -0800
Re: Casts on lvalues lawrence.jones@siemens.com - 2012-12-17 16:37 -0500
Re: Casts on lvalues Tim Rentsch <txr@alumni.caltech.edu> - 2012-12-17 02:58 -0800
Re: Casts on lvalues Tim Rentsch <txr@alumni.caltech.edu> - 2012-12-17 02:53 -0800
Re: Casts on lvalues Tim Rentsch <txr@alumni.caltech.edu> - 2012-12-17 02:43 -0800
Re: Casts on lvalues Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-12-05 22:07 +0000
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-05 22:20 +0000
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-05 16:10 -0800
Re: Casts on lvalues Philip Lantz <prl@canterey.us> - 2012-12-06 22:49 -0800
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-07 12:54 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-07 08:22 -0500
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-07 13:48 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-07 11:17 -0500
Re: Casts on lvalues glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-12-07 17:33 +0000
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-07 18:28 +0000
Re: Casts on lvalues glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-12-07 22:18 +0000
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-07 18:27 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-07 14:14 -0500
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-07 20:16 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-07 15:41 -0500
Re: Casts on lvalues Tim Rentsch <txr@alumni.caltech.edu> - 2012-12-17 03:03 -0800
Re: Casts on lvalues Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-12-09 17:54 +0200
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-09 12:38 -0500
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-09 18:50 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-09 14:31 -0500
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-09 20:12 -0800
Re: Casts on lvalues Heikki Kallasjoki <fis+usenet@zem.fi> - 2012-12-10 07:38 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-10 08:12 -0500
Re: Casts on lvalues Heikki Kallasjoki <fis+usenet@zem.fi> - 2012-12-10 17:46 +0000
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-10 12:59 -0500
Re: Casts on lvalues Keith Thompson <kst-u@mib.org> - 2012-12-10 12:07 -0800
Re: Casts on lvalues Tim Rentsch <txr@alumni.caltech.edu> - 2012-12-17 03:11 -0800
Re: Casts on lvalues Ian Collins <ian-news@hotmail.com> - 2012-12-10 20:50 +1300
Re: Casts on lvalues James Kuyper <jameskuyper@verizon.net> - 2012-12-10 07:49 -0500
Re: Casts on lvalues Rui Maciel <rui.maciel@gmail.com> - 2012-12-07 15:19 +0000
Re: Casts on lvalues "BartC" <bc@freeuk.com> - 2012-12-07 16:54 +0000
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