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Re: More problems with lcc-win

From BartC <bc@freeuk.com>
Newsgroups comp.lang.c
Subject Re: More problems with lcc-win
Date 2017-03-16 11:15 +0000
Organization A noiseless patient Spider
Message-ID <oadrv2$bfv$1@dont-email.me> (permalink)
References (7 earlier) <20170315184219.1e0c610d45be2e475412b258@gmail.com> <oac0ft$8e2$1@dont-email.me> <lnh92ugw92.fsf@kst-u.example.com> <oac7ev$390$1@dont-email.me> <oadk7b$imu$1@dont-email.me>

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On 16/03/2017 09:03, David Brown wrote:
> On 15/03/17 21:19, BartC wrote:

>> Here's the current set of int types and their typical widths on x86 and
>> ARM:

>> Notice the odd one out in each case...
>>
>> I think it could have been handled better.

> And there /is/ an alternative that handles it differently (mostly
> "better", IMHO - but not better in every way) - the fixed size types in
> <stdint.h>.

There is something about how stdint.h works. First, all those intN_t 
types are just defined on top of char, short, int, long, long long anyway!

But also the behaviour changes. Take this code using traditional types:

   int *a;
   long *b;
   long long *c;

   a=b;
   b=c;
   printf("%d %ld %lld",(int)0, (long)0, (long long)0);


You would expect type errors on both assignments, but the formats to be 
fine. Now change to the equivalent using intN_t types:

   int32_t *a;
//int32_t *b;      // comment of these b's out
   int64_t *b;
   long long *c;

   a=b;
   b=c;
   printf("%d %ld %lld",(int32_t)0, (int64_t)0, (int64_t)0);

Now only one of the assignments is a type error. And you can get an 
extra error in the formats. (Of course all formats would need upgrading

Maybe this would never be of practical significance, but it seems to me 
amiss that you can't recreate the behaviour of the funny in-between 
'long' type using fixed-width types.

-- 
Bartc

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Thread

More problems with lcc-win mertesthomas@gmail.com - 2017-03-15 00:29 -0700
  Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 11:27 +0100
    Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-15 13:18 +0000
      Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 15:22 +0100
        Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 08:26 -0700
    Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 08:25 -0700
      Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 16:46 +0100
        Re: More problems with lcc-win David Brown <david.brown@hesbynett.no> - 2017-03-15 17:07 +0100
          Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 09:52 -0700
            Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-15 16:57 +0000
              Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 10:11 -0700
                Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-15 18:17 +0000
            Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-15 17:21 +0000
              Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-15 18:42 +0100
                Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-15 18:20 +0000
                Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-15 18:59 +0000
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-15 18:20 +0000
                Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-15 19:39 +0100
                Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 12:44 -0700
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-15 20:19 +0000
                Re: More problems with lcc-win David Brown <david.brown@hesbynett.no> - 2017-03-16 10:03 +0100
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-16 11:15 +0000
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-16 11:32 +0000
                Re: More problems with lcc-win David Brown <david.brown@hesbynett.no> - 2017-03-16 13:41 +0100
                Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-16 08:52 +0100
                Re: More problems with lcc-win David Brown <david.brown@hesbynett.no> - 2017-03-16 09:57 +0100
                Re: More problems with lcc-win antispam@math.uni.wroc.pl - 2017-03-16 13:53 +0000
                Re: More problems with lcc-win jm.bourguet@gmail.com - 2017-03-16 07:14 -0700
                Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-16 08:59 -0700
              Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 12:43 -0700
                Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-15 20:39 +0000
            Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 23:56 +0100
        Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-15 16:33 +0000
          Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 17:47 +0100
            Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 10:04 -0700
              Re: More problems with lcc-win jacob navia <jacob@jacob.remcomp.fr> - 2017-03-16 00:52 +0100
                Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 18:02 -0700
                Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 18:23 -0700
                Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-17 13:45 -0700
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-18 00:23 +0100
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-18 00:29 +0100
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-18 00:31 +0100
                Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-17 17:01 -0700
                Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-20 16:41 +0000
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-20 18:32 +0100
                Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-20 18:18 +0000
                Re: More problems with lcc-win bart4858@gmail.com - 2017-03-20 12:31 -0700
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-20 21:05 +0100
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-20 20:45 +0000
                Re: More problems with lcc-win Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-20 20:18 +0000
                Re: More problems with lcc-win David Brown <david.brown@hesbynett.no> - 2017-03-21 09:56 +0100
                Re: More problems with lcc-win Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-03-21 21:08 +0000
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-21 22:19 +0100
                Re: More problems with lcc-win Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-03-22 06:29 +0000
                Re: More problems with lcc-win supercat@casperkitty.com - 2017-03-21 16:12 -0700
                Re: More problems with lcc-win gordonb.s97bd@burditt.org (Gordon Burditt) - 2017-03-24 01:13 -0500
                Re: More problems with lcc-win supercat@casperkitty.com - 2017-03-24 08:16 -0700
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-26 03:18 -0700
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-26 12:35 +0100
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-29 05:17 -0700
                Re: More problems with lcc-win supercat@casperkitty.com - 2017-03-26 14:04 -0700
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-29 05:48 -0700
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-21 23:21 +0000
                Re: More problems with lcc-win Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-03-22 06:18 +0000
                Re: More problems with lcc-win gordonb.1neik@burditt.org (Gordon Burditt) - 2017-03-21 18:45 -0500
                Re: More problems with lcc-win jm.bourguet@gmail.com - 2017-03-22 01:02 -0700
                Re: More problems with lcc-win David Brown <david.brown@hesbynett.no> - 2017-03-22 10:35 +0100
                Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-22 13:21 +0000
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-22 14:08 +0000
                Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-22 15:37 +0000
                Re: More problems with lcc-win Gareth Owen <gwowen@gmail.com> - 2017-03-22 21:09 +0000
                Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-21 13:09 +0000
                Re: More problems with lcc-win Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-03-21 21:15 +0000
                Re: More problems with lcc-win Ian Collins <ian-news@hotmail.com> - 2017-03-18 12:44 +1300
                Re: More problems with lcc-win jameskuyper@verizon.net - 2017-03-17 16:59 -0700
                Re: charsets Noob <root@127.0.0.1> - 2017-03-18 18:30 +0100
                Re: More problems with lcc-win David Brown <david.brown@hesbynett.no> - 2017-03-16 10:18 +0100
            Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-15 15:06 -0700
              Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-15 22:23 +0000
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-15 15:43 -0700
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 23:53 +0100
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-16 08:35 -0700
                Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-15 23:13 +0000
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-16 06:28 -0700
                Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-16 16:56 +0000
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-16 14:53 -0700
              Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 16:18 -0700
                Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-16 18:03 +0000
                Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-16 19:29 +0100
                Re: More problems with lcc-win Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-16 21:38 +0000
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-17 08:58 -0700
                Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-17 09:45 -0700
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-17 10:33 -0700
                Re: More problems with lcc-win "James R. Kuyper" <jameskuyper@verizon.net> - 2017-03-17 14:20 -0400
                Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-17 20:18 +0100
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-18 00:44 -0700
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-18 13:31 +0000
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-18 15:54 -0700
                Re: More problems with lcc-win scott@slp53.sl.home (Scott Lurndal) - 2017-03-20 13:27 +0000
                Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-18 15:15 +0100
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-18 11:39 -0700
                Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-18 20:11 +0100
                Re: More problems with lcc-win BartC <bc@freeuk.com> - 2017-03-18 19:45 +0000
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-20 00:35 -0700
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-18 14:22 -0700
                Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-18 22:46 +0100
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-18 16:12 -0700
                Re: More problems with lcc-win supercat@casperkitty.com - 2017-03-18 18:01 -0700
                Re: More problems with lcc-win GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-19 03:21 +0100
                Re: More problems with lcc-win Ian Collins <ian-news@hotmail.com> - 2017-03-19 15:32 +1300
                Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-19 02:17 -0700
    Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-15 14:25 -0700
      Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 23:49 +0100
  Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 11:28 +0100
    Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-15 14:35 -0700
      Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 23:44 +0100
  Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 13:06 +0100
    Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-15 14:43 -0700
      Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 23:43 +0100
  Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 13:19 +0100
    Re: More problems with lcc-win mertesthomas@gmail.com - 2017-03-15 14:50 -0700
  Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 08:24 -0700
    Re: More problems with lcc-win jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-15 16:47 +0100
      Re: More problems with lcc-win jameskuyper@verizon.net - 2017-03-15 09:04 -0700
      Re: More problems with lcc-win Keith Thompson <kst-u@mib.org> - 2017-03-15 09:15 -0700
        Re: More problems with lcc-win gazelle@shell.xmission.com (Kenny McCormack) - 2017-03-15 19:59 +0000
      Re: More problems with lcc-win Richard Heathfield <rjh@cpax.org.uk> - 2017-03-15 16:32 +0000

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