Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c > #75410

Re: Right C version for GCC

Path csiph.com!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail
From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: Right C version for GCC
Date Sun, 08 Nov 2015 17:00:43 -0800
Organization None to speak of
Lines 41
Message-ID <lntwowyojo.fsf@kst-u.example.com> (permalink)
References <n1nqt1$f3m$1@speranza.aioe.org> <dcaff3d0-3feb-4343-bf7f-f5f87696da81@googlegroups.com>
Mime-Version 1.0
Content-Type text/plain; charset=us-ascii
Injection-Info mx02.eternal-september.org; posting-host="945944de09706c9b4e29b53c9d2efdc2"; logging-data="8175"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19vwLHoQhIpRteXBrR5R7LL"
User-Agent Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)
Cancel-Lock sha1:wIya8wKzCXnlnHnMogHQh1Vi+ik= sha1:XHk2/jBgNBOSNMV+CKultMRWJ80=
Xref csiph.com comp.lang.c:75410

Show key headers only | View raw

Malcolm McLean <malcolm.mclean5@btinternet.com> writes:
[...]
> If you want to write portable code, I strongly recommend that you stick
> to a conservative subset of C89. No passing or returning of structures 
> by value, no nested structure definitions, no non-basic types as
> members except for structures declared in your own program,
> especially wide character types (you can probably get away with 
> size_t, but I'd also cut it out).

C has permitted structure assignment, argument passing, and
returning as values from functions since the 1989 ANSI standard,
and several years before.  K&R1, published in 1978, mentions it
as a feature that would be implemented soon.  I challenge you to
find a C compiler in current use that does not support it.

If by "nested structure definitions" you mean using a structure as
a member of another structure, I have never heard of a C compiler
that did not fully support that.  A C reference manual from 1975
includes structs and mentions no such restriction.  If not, what
exactly do you mean by "nested structure definitions"?  C11 supports
anonymous structures, but those are easily avoided.

If you want maximially portable C code, I suggest using C89 while
avoiding any features that are either obsolescent or incompatible
with later standards.  Using C99 will only slightly reduce your
code's portability.  Microsoft's c compiler is the one that's the
most notorious for its failure to support C99, but it does support
*some* C99 features.

There are some C (or C-like) compilers, particularly for embedded
systems, that don't fully support any C standard.  You can't really
write portable C code to target such compilers, since the features
that are missing are going to vary from one compiler to another.
I suggest not worrying about that until and unless you actually
need to use such a compiler.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-08 16:49 +0100
  Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-08 19:29 +0100
  Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 11:46 -0800
    Re: Right C version for GCC Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-08 20:03 +0000
      Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 12:18 -0800
    Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-08 21:14 +0100
      Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 12:25 -0800
        Re: Right C version for GCC supercat@casperkitty.com - 2015-11-08 13:06 -0800
          Re: Right C version for GCC Philip Lantz <prl@canterey.us> - 2015-11-08 14:52 -0800
            Re: Right C version for GCC supercat@casperkitty.com - 2015-11-08 15:12 -0800
              Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-09 09:38 +0100
              Re: Right C version for GCC Nick Bowler <nbowler@draconx.ca> - 2015-11-09 19:04 +0000
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 11:27 -0800
            Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-09 00:00 +0000
        Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-08 16:35 -0800
    Re: Right C version for GCC supercat@casperkitty.com - 2015-11-08 12:37 -0800
      Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 12:58 -0800
        Re: Right C version for GCC supercat@casperkitty.com - 2015-11-08 13:19 -0800
    Re: Right C version for GCC Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-08 21:49 +0000
      Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 14:14 -0800
        Re: Right C version for GCC Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 01:02 +0000
          Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 02:26 -0800
            Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-09 12:53 +0100
            Re: Right C version for GCC Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 15:00 +0000
              Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 08:55 -0800
                Re: Right C version for GCC Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 17:07 +0000
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 09:51 -0800
                Re: Right C version for GCC jacobnavia <jacob@jacob.remcomp.fr> - 2015-11-09 19:01 +0100
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 19:16 +0100
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 11:24 -0800
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 20:30 +0100
                Re: Right C version for GCC jacobnavia <jacob@jacob.remcomp.fr> - 2015-11-09 20:40 +0100
            Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 08:56 -0800
              Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 09:41 -0800
                Re: Right C version for GCC gazelle@shell.xmission.com (Kenny McCormack) - 2015-11-09 17:44 +0000
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-09 18:53 +0100
                Re: Right C version for GCC Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 18:00 +0000
                Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 10:27 -0800
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 11:17 -0800
                Re: Right C version for GCC glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-09 22:59 +0000
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 11:15 -0800
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-12 16:47 +0100
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-12 09:24 -0800
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-13 12:54 +0100
                Re: Right C version for GCC Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-13 12:01 -0800
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-14 10:47 -0800
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-14 21:32 +0100
                Re: Right C version for GCC Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-14 16:57 -0800
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 11:07 -0800
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 20:18 +0100
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 11:27 -0800
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 20:41 +0100
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 12:07 -0800
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 21:12 +0100
                Re: Right C version for GCC glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-09 23:13 +0000
                Re: Right C version for GCC James Kuyper <jameskuyper@verizon.net> - 2015-11-09 19:02 -0500
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-10 17:52 +0000
                Re: Right C version for GCC glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-10 21:34 +0000
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-17 22:28 +0000
                Re: Right C version for GCC glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-18 00:51 +0000
                Re: Right C version for GCC James Kuyper <jameskuyper@verizon.net> - 2015-11-17 22:26 -0500
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-18 11:06 +0100
                Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 15:37 -0800
                Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-10 12:54 +1300
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 16:14 -0800
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 16:37 -0800
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 16:56 -0800
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 17:25 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 10:37 +0100
                Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 18:06 -0800
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 18:51 -0800
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-10 08:40 -0800
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-10 17:55 +0000
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-10 17:50 +0000
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-12 14:32 +0100
          Re: Right C version for GCC Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-09 10:35 +0000
      Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-08 23:57 +0100
        Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 00:47 +0100
          Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-09 13:01 +0100
            Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 13:18 +0100
              Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-09 14:01 +0100
        Re: Right C version for GCC Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 00:55 +0000
          Re: Right C version for GCC Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-09 10:42 +0000
            Re: Right C version for GCC Chad <cdalten@gmail.com> - 2015-11-09 03:03 -0800
              Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 03:27 -0800
                Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-09 12:28 +0000
                Re: Right C version for GCC Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-10 09:07 +0000
              Re: Right C version for GCC James Kuyper <jameskuyper@verizon.net> - 2015-11-09 07:37 -0500
            Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-09 16:57 +0100
      Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-09 12:39 +0100
        Re: Right C version for GCC James Kuyper <jameskuyper@verizon.net> - 2015-11-09 13:18 -0500
          Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 10:49 +0100
            Re: Right C version for GCC Les Cargill <lcargill99@comcast.com> - 2015-11-10 19:33 -0600
              Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-11 13:34 +0100
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-11 06:53 -0800
    Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-08 17:00 -0800
      Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-09 13:37 +0100
      Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-09 13:53 +0100
    Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-09 21:54 +0000
      Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-09 15:45 -0800
        Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 11:14 +0100
          Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-10 10:53 +0000
          Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-10 03:14 -0800
            Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 13:00 +0100
              Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-10 12:39 +0000
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 15:11 +0100
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-10 16:16 +0100
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 16:35 +0100
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-10 08:54 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 18:56 +0100
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-10 23:27 +0100
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-17 22:32 +0000
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-18 08:44 +0100
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-19 10:43 +0000
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-19 12:29 +0100
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-20 11:01 +0000
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-21 15:50 +0100
                Re: Right C version for GCC Philipp Klaus Krause <pkk@spth.de> - 2015-11-18 11:13 +0100
              Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-10 07:25 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 16:42 +0100
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-10 08:48 -0800
                Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-11 01:08 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-11 13:43 +0100
                Re: Right C version for GCC Les Cargill <lcargill99@comcast.com> - 2015-11-11 08:27 -0600
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-11 16:27 +0100
                Re: Right C version for GCC David Thompson <dave.thompson2@verizon.net> - 2015-12-06 07:57 -0500
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-12-06 22:34 +0100
                Re: Right C version for GCC Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-12-06 22:41 +0000
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-12-07 09:47 +0100
                Re: Right C version for GCC supercat@casperkitty.com - 2015-12-07 07:30 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-12-07 17:30 +0100
                Re: Right C version for GCC supercat@casperkitty.com - 2015-12-07 10:17 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-12-07 21:29 +0100
                Re: Right C version for GCC supercat@casperkitty.com - 2015-12-07 13:16 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-12-07 23:35 +0100
                Re: Right C version for GCC jadill33@gmail.com - 2015-12-07 10:41 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-12-07 21:35 +0100
  Re: Right C version for GCC Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-08 20:11 +0000
  Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-09 09:57 +1300
    Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 13:06 -0800
      Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-09 10:16 +1300
        Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-08 22:59 +0100
          Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-09 12:13 +1300
            Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 00:43 +0100
              Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-09 13:00 +1300
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 12:02 +0100
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 09:00 -0800
                Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-10 07:25 +1300
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 19:35 +0100
                Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-10 08:55 +1300
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 21:00 +0100
                Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-10 09:04 +1300
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 21:11 +0100
                Re: Right C version for GCC Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-09 20:18 +0000
                Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 21:21 +0100
                Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-10 09:30 +1300
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 12:53 -0800
                Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-09 12:30 -0800
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 13:02 -0800
                Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-09 21:35 +0000
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 14:41 -0800
                Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-09 23:31 +0000
                Re: Right C version for GCC supercat@casperkitty.com - 2015-11-09 16:33 -0800
                Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-10 11:16 +0100
                Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-11 08:04 +1300
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-10 18:04 +0000
                Re: Right C version for GCC raltbos@xs4all.nl (Richard Bos) - 2015-11-10 18:03 +0000
                Re: Right C version for GCC Ian Collins <ian-news@hotmail.com> - 2015-11-11 08:23 +1300
          Re: Right C version for GCC David Brown <david.brown@hesbynett.no> - 2015-11-09 13:41 +0100
      Re: Right C version for GCC supercat@casperkitty.com - 2015-11-08 13:24 -0800
      Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-08 23:00 +0100
        Re: Right C version for GCC Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-08 15:18 -0800
          Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 00:35 +0100
          Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-08 17:03 -0800
            Re: Right C version for GCC Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-09 12:42 +0000
  Re: Right C version for GCC Keith Thompson <kst-u@mib.org> - 2015-11-08 17:51 -0800
  Re: Right C version for GCC Les Cargill <lcargill99@comcast.com> - 2015-11-09 12:20 -0600
    Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-09 19:36 +0100
    Re: Right C version for GCC BartC <bc@freeuk.com> - 2015-11-09 18:47 +0000
  Re: Right C version for GCC Stephen Sprunk <stephen@sprunk.org> - 2015-11-11 00:55 -0600
    Re: Right C version for GCC "Morten W. Petersen" <morphex@gmail.com> - 2015-11-12 14:39 +0100

csiph-web