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Groups > comp.lang.c > #107062
| From | Les Cargill <lcargill99@comcast.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: struct padding question |
| Date | 2017-03-25 15:12 -0500 |
| Organization | A noiseless patient Spider |
| Message-ID | <ob6ih2$nv$2@dont-email.me> (permalink) |
| References | <ob062g$coi$1@dont-email.me> |
MehdiAmini wrote:
>
> // struct padding question
>
> #include <stdio.h>
> #include <stdlib.h>
> #include <inttypes.h>
>
> #define N 6
>
> static struct data
> { uint64_t ctr[N];
> long double mean;
> long double variance;
> long double * probability_ptr;
>
> } my_data;
>
> void init_data( struct data* const);
>
> int main(void)
> {
> init_data(&my_data);
>
> return EXIT_SUCCESS;
> }
>
> void init_data(struct data * const data_ptr)
> {
> data_ptr->probability_ptr = NULL;
> for(long i = 0; i<N; i++)
> data_ptr->ctr[i] = 0;
> data_ptr->mean = (long double)0.0;
> data_ptr->variance = (long double)0.0;
>
> return;
> }
>
> // Compiling the above code I get the warning, how to fix it?
>
> clang -pedantic -Weverything -Wall -m64 -std=c11
>
> warning: padding size of 'struct data' with 8 bytes to alignment
> boundary [-Wpadded]
> static struct data
> ^
>
Google for "pragma pack". Hopefully, you do not then encounter alignment
issues.
--
Les Cargill
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struct padding question MehdiAmini <atorrses@gmail.com> - 2017-03-23 14:28 +0430
Re: struct padding question David Brown <david.brown@hesbynett.no> - 2017-03-23 11:28 +0100
Re: struct padding question MehdiAmini <atorrses@gmail.com> - 2017-03-23 16:44 +0430
Re: struct padding question jm.bourguet@gmail.com - 2017-03-23 05:30 -0700
Re: struct padding question Keith Thompson <kst-u@mib.org> - 2017-03-23 08:45 -0700
Re: struct padding question Noob <root@127.0.0.1> - 2017-04-01 19:15 +0200
Re: struct padding question tim prince <n8tm@aol.com> - 2017-04-01 14:41 -0400
Re: struct padding question supercat@casperkitty.com - 2017-04-02 09:15 -0700
Re: struct padding question scott@slp53.sl.home (Scott Lurndal) - 2017-04-03 13:51 +0000
Re: struct padding question supercat@casperkitty.com - 2017-04-03 07:48 -0700
Re: struct padding question scott@slp53.sl.home (Scott Lurndal) - 2017-04-03 15:47 +0000
Re: struct padding question supercat@casperkitty.com - 2017-04-03 09:24 -0700
Re: struct padding question Keith Thompson <kst-u@mib.org> - 2017-04-01 11:43 -0700
Re: struct padding question Robert Wessel <robertwessel2@yahoo.com> - 2017-04-01 13:46 -0500
Re: struct padding question Keith Thompson <kst-u@mib.org> - 2017-04-01 12:00 -0700
Re: struct padding question Robert Wessel <robertwessel2@yahoo.com> - 2017-04-01 16:40 -0500
Re: struct padding question Keith Thompson <kst-u@mib.org> - 2017-04-01 15:24 -0700
Re: struct padding question Robert Wessel <robertwessel2@yahoo.com> - 2017-04-03 17:46 -0500
Re: struct padding question BartC <bc@freeuk.com> - 2017-03-23 11:50 +0000
Re: struct padding question David Brown <david.brown@hesbynett.no> - 2017-03-23 14:08 +0100
Re: struct padding question BartC <bc@freeuk.com> - 2017-03-23 13:31 +0000
Re: struct padding question David Brown <david.brown@hesbynett.no> - 2017-03-23 14:46 +0100
Re: struct padding question BartC <bc@freeuk.com> - 2017-03-23 14:07 +0000
Re: struct padding question David Brown <david.brown@hesbynett.no> - 2017-03-23 15:52 +0100
Re: struct padding question scott@slp53.sl.home (Scott Lurndal) - 2017-03-23 17:19 +0000
Re: struct padding question David Brown <david.brown@hesbynett.no> - 2017-03-23 19:57 +0100
Re: struct padding question Ian Pilcher <arequipeno@gmail.com> - 2017-03-23 08:52 -0500
Re: struct padding question David Brown <david.brown@hesbynett.no> - 2017-03-23 15:54 +0100
Re: struct padding question supercat@casperkitty.com - 2017-03-23 08:29 -0700
Re: struct padding question GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-23 14:04 +0100
Re: struct padding question MehdiAmini <atorrses@gmail.com> - 2017-03-23 20:32 +0430
Re: struct padding question GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-23 18:35 +0100
Re: struct padding question supercat@casperkitty.com - 2017-03-23 12:02 -0700
Re: struct padding question Keith Thompson <kst-u@mib.org> - 2017-03-23 12:21 -0700
Re: struct padding question supercat@casperkitty.com - 2017-03-23 12:55 -0700
Re: struct padding question Les Cargill <lcargill99@comcast.com> - 2017-03-25 15:12 -0500
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