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Groups > comp.lang.c > #125726

Re: Toy code for currency handling

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: Toy code for currency handling
Date 2018-01-24 14:29 -0800
Organization None to speak of
Message-ID <lnpo5yao1d.fsf@kst-u.example.com> (permalink)
References (16 earlier) <338154ad-7743-4673-8e1c-b644c1cc4cbb@googlegroups.com> <slrnp6h7ve.eu5.grahn+nntp@frailea.sa.invalid> <3f4603c1-8d53-4b06-9221-c0fb22be4b6c@googlegroups.com> <lntvvb9hak.fsf@kst-u.example.com> <18b92e29-acae-4e1f-abfd-9766a2f65c5f@googlegroups.com>

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supercat@casperkitty.com writes:
> On Wednesday, January 24, 2018 at 1:40:53 PM UTC-6, Keith Thompson wrote:
>> Meanwhile, out here in the real world, are there any linkers currently
>> used by any C compilers that do not support identifiers of at least 31
>> characters as required by N1570 5.2.4.1?
>> 
>> No doubt a conforming C99 or C11 compiler *could* be made to work with a
>> more limited linker, but as far as I know there's simply no need to
>> worry about it.
>
> If no such linkers existed, why would the Standard need to mandate any
> particular number?  I would think it obvious that if a linker would support
> external names of N characters, a quality implementation targeting that
> linker should do likewise, at least up to its limit for internal names.
> The only situation in which the Standard's mandate could have an effect
> would be in cases where supporting external names of 31 characters would
> otherwise be difficult.

Many of the numeric limits specified in the standard are, I think,
intended to discourage setting any fixed limits at all.  The easiest
way to meet the requirement for 31 significant initial characters
is not to impose a fixed limit.  Even for linkers that impose a
fixed limit, the C standard's requirement encourages implementers
to make the limit no less than 31 characters, just to make the
compiler's job easier.

I infer from your failure to answer my question that you don't know
of any such linkers (you could have said so several responses ago).
But that's ok; Robert Wessel has cited an example (the linker for
zVSE, an IBM mainframe OS, which only supports 8-character names).
Even there, the workaround is to use an automated tool on the
object files to map long names to shortened encoded names, not,
as you suggested, to force the programmer to invent such names.

-- 
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"

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Thread

Re: Toy code for currency handling David Thompson <dave.thompson2@verizon.net> - 2018-01-21 11:53 -0500
  Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-21 11:44 -0800
    Re: Toy code for currency handling Keith Thompson <kst-u@mib.org> - 2018-01-21 12:24 -0800
      Re: Toy code for currency handling herrmannsfeldt@gmail.com - 2018-01-23 21:03 -0800
        Re: Toy code for currency handling Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-01-24 15:02 +0000
          Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-24 08:45 -0800
            Re: Toy code for currency handling Keith Thompson <kst-u@mib.org> - 2018-01-24 11:40 -0800
              Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-24 14:52 -0600
              Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-24 13:05 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-24 13:12 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-25 01:04 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-24 19:17 -0600
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-24 17:33 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-25 12:14 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 04:31 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-25 13:03 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 05:28 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 05:37 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 05:43 -0800
                Re: Toy code for currency handling mark.bluemel@gmail.com - 2018-01-25 05:57 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-25 15:48 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 08:32 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 10:56 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-25 21:28 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 15:10 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 06:14 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 06:38 -0800
                Re: Toy code for currency handling gordonb.ma9h0@burditt.org (Gordon Burditt) - 2018-01-24 21:53 -0600
                Re: Toy code for currency handling scott@slp53.sl.home (Scott Lurndal) - 2018-01-25 18:05 +0000
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-25 18:16 +0000
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-26 07:30 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-25 22:08 +0000
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-26 20:00 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-26 11:31 +0000
                Re: Toy code for currency handling scott@slp53.sl.home (Scott Lurndal) - 2018-01-26 15:51 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-26 10:32 -0600
                Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-26 08:50 -0800
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-26 13:11 -0600
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-26 18:32 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-26 13:07 -0600
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-27 09:43 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-26 21:44 +0000
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-27 11:02 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-27 00:46 +0000
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-28 09:19 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-27 21:19 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-27 14:14 -0800
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-28 11:21 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-27 22:32 +0000
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-28 12:16 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-28 00:44 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 04:13 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-28 13:56 +0000
                Re: Toy code for currency handling Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-01-28 06:12 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 06:43 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-28 15:40 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 07:56 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-28 16:12 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 08:34 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-28 16:53 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 09:30 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 09:48 -0800
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-28 23:23 -0600
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-29 18:29 +1300
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-28 23:45 -0600
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-29 19:54 +1300
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-29 01:38 -0600
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-29 20:56 +1300
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-29 20:34 -0600
                Re: Toy code for currency handling "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-01-29 21:46 -0800
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-28 23:34 -0600
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-29 12:02 +0000
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-29 12:33 +0000
                Re: Toy code for currency handling Richard Damon <Richard@Damon-Family.org> - 2018-01-29 08:30 -0500
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-29 14:08 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-29 19:36 -0600
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-30 11:49 +0000
                Re: Toy code for currency handling already5chosen@yahoo.com - 2018-01-30 04:45 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-30 13:04 +0000
                Re: Toy code for currency handling already5chosen@yahoo.com - 2018-01-30 05:17 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-30 14:23 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-30 11:39 -0600
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-30 18:23 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-30 18:25 -0600
                Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-31 07:56 -0800
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-31 12:56 -0600
                Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-31 13:09 -0800
                Re: Toy code for currency handling scott@slp53.sl.home (Scott Lurndal) - 2018-01-31 21:35 +0000
                Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-31 16:45 -0800
                Re: Toy code for currency handling David Brown <david.brown@hesbynett.no> - 2018-02-01 08:59 +0100
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-02-01 02:40 -0600
                Re: Toy code for currency handling David Brown <david.brown@hesbynett.no> - 2018-02-01 10:13 +0100
                Re: Toy code for currency handling scott@slp53.sl.home (Scott Lurndal) - 2018-02-01 14:49 +0000
                Re: Toy code for currency handling David Brown <david.brown@hesbynett.no> - 2018-02-01 16:13 +0100
                Re: Toy code for currency handling supercat@casperkitty.com - 2018-02-01 09:05 -0800
                Re: Toy code for currency handling David Brown <david.brown@hesbynett.no> - 2018-02-01 22:07 +0100
                Re: Toy code for currency handling supercat@casperkitty.com - 2018-02-01 15:49 -0800
                Re: Toy code for currency handling David Brown <david.brown@hesbynett.no> - 2018-02-02 13:13 +0100
                Re: Toy code for currency handling already5chosen@yahoo.com - 2018-01-30 05:30 -0800
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-30 10:48 -0600
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-29 12:59 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-29 20:26 -0600
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-29 20:36 -0600
                Re: Toy code for currency handling mark.bluemel@gmail.com - 2018-01-30 00:34 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-30 11:33 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-30 11:49 -0600
                Re: Toy code for currency handling jameskuyper@verizon.net - 2018-01-30 12:03 -0800
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-30 17:40 -0600
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-30 12:56 +0000
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-30 11:28 -0600
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-31 19:19 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 04:16 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-28 13:40 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 06:35 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 07:24 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-28 15:24 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-28 07:44 -0800
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-29 18:34 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-29 12:21 +0000
                Re: Toy code for currency handling Ian Collins <ian-news@hotmail.com> - 2018-01-30 07:59 +1300
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-29 19:56 +0000
                Re: Toy code for currency handling scott@slp53.sl.home (Scott Lurndal) - 2018-01-29 20:53 +0000
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-29 21:52 +0000
                Re: Toy code for currency handling Richard Damon <Richard@Damon-Family.org> - 2018-01-27 18:32 -0500
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-27 13:22 -0600
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-26 13:23 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-26 13:41 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-26 14:12 -0800
                Re: Toy code for currency handling bartc <bc@freeuk.com> - 2018-01-26 22:23 +0000
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-26 14:44 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-26 15:28 -0800
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-26 16:22 -0800
                Re: Toy code for currency handling David Brown <david.brown@hesbynett.no> - 2018-01-25 09:11 +0100
                Re: Toy code for currency handling fir <profesor.fir@gmail.com> - 2018-01-25 02:27 -0800
                Re: Toy code for currency handling Robert Wessel <robertwessel2@yahoo.com> - 2018-01-24 15:23 -0600
                Re: Toy code for currency handling Keith Thompson <kst-u@mib.org> - 2018-01-24 14:29 -0800
                Re: Toy code for currency handling supercat@casperkitty.com - 2018-01-24 14:49 -0800

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