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Groups > comp.lang.c > #127097

Re: Text Files

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: Text Files
Date 2018-02-26 11:52 -0800
Organization None to speak of
Message-ID <lnfu5nil5j.fsf@kst-u.example.com> (permalink)
References (13 earlier) <e8333d92-3eb3-4463-9720-725948c427ae@googlegroups.com> <lny3jjjjua.fsf@kst-u.example.com> <9990dccb-4af6-4d66-8a03-8842bd0f92a4@googlegroups.com> <lnzi3wiq0f.fsf@kst-u.example.com> <e8a05547-b79f-497d-a6a9-5edb335fe075@googlegroups.com>

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supercat@casperkitty.com writes:
> On Sunday, February 25, 2018 at 5:55:12 PM UTC-6, Keith Thompson wrote:
>> supercat@casperkitty.com writes:
>> > Many C implementations make use of external libraries or platform
>> > features.  Documenting all of the factors that might affect the
>> > behavior of an overflow that occurs within a scanf might have been
>> > impractical for some implementations.
>> 
>> That's not an issue.  The external library is part of the
>> C implementation, so its documentation is part of the C
>> implementation's documentation.
>
> Many C implementations, including gcc, consist of a compiler and runtime
> library supplied by separate entities.  The author of a runtime library
> would generally have no way of knowing all the ways that a compiler might
> replace a scanf call with something else, and the author of an implementation
> would generally have no way of knowing how a library written by someone
> else, or future versions thereof, would handle all corner cases.

A compiler and a runtime library have to work together to make a
conforming implementation.  Or they can fail to do so, and the result is
a non-conforming implementation.

Transforming printf("hello\n") to puts("hello") is perfectly safe as
long as the library is correct.  Other transformations that depend on
non-standard library behavior would have to be done in coordination with
the library, and might have to be disabled if a different library is
used.

In practice, implementers don't seem to have much trouble with this
concept.  You needn't be outraged on their behalf.

> If the Standard were to recognize a category of implementation that relies

*yawn*

[...]

-- 
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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Text Files G B <gb@gb.com> - 2018-02-14 11:47 -0400
  Re: Text Files Ed Prochak <edprochak@gmail.com> - 2018-02-14 08:45 -0800
  Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-14 08:47 -0800
    Re: Text Files already5chosen@yahoo.com - 2018-02-15 01:17 -0800
  Re: Text Files gordonb.ea2mq@burditt.org (Gordon Burditt) - 2018-02-14 11:10 -0600
  Re: Text Files "James R. Kuyper" <jameskuyper@verizon.net> - 2018-02-14 12:28 -0500
  Re: Text Files jt@toerring.de (Jens Thoms Toerring) - 2018-02-14 21:07 +0000
  Re: Text Files Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2018-02-14 15:31 -0700
    Re: Text Files Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-02-15 06:59 +0000
      Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 10:20 +0000
  Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-14 22:51 +0000
    Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-15 11:04 +0100
      Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-15 06:16 -0800
        Re: Text Files "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2018-02-15 22:22 +0800
        Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-15 15:58 +0100
          Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 16:31 +0000
            Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-15 21:31 +0100
              Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 21:21 +0000
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 22:17 +0000
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 23:36 +0000
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 23:48 +0000
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 10:09 +0100
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 12:57 +0000
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 15:50 +0100
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 15:50 +0000
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 17:07 +0100
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 20:44 +0000
                Re: Text Files Ian Collins <ian-news@hotmail.com> - 2018-02-17 11:22 +1300
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-16 17:48 +0000
                Re: Text Files GOTHIER Nathan <nathan.gothier@gmail.com> - 2018-02-16 17:06 +0100
                Re: Text Files Ian Collins <ian-news@hotmail.com> - 2018-02-17 11:10 +1300
                Re: Text Files supercat@casperkitty.com - 2018-02-16 14:48 -0800
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-16 15:14 -0800
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-16 23:25 +0000
                Re: Text Files supercat@casperkitty.com - 2018-02-16 15:50 -0800
          Re: Text Files already5chosen@yahoo.com - 2018-02-16 07:19 -0800
            Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 17:13 +0100
              Re: Text Files Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-02-19 17:55 +0000
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-19 19:14 +0100
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-19 11:48 -0800
            Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-16 08:14 -0800
              Re: Text Files Robert Wessel <robertwessel2@yahoo.com> - 2018-02-17 18:32 -0600
    Re: Text Files jacobnavia <jacob@jacob.remcomp.fr> - 2018-02-15 22:57 +0100
      Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 22:58 +0000
        Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 00:19 +0000
          Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 02:26 +0000
            Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-16 02:57 +0000
              Re: Text Files asetofsymbols@gmail.com - 2018-02-16 00:21 -0800
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-16 11:30 +0000
          Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 10:36 +0100
            Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-16 11:36 +0000
              Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 13:10 +0100
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 12:25 +0000
                Re: Text Files Ike Naar <ike@iceland.freeshell.org> - 2018-03-06 19:33 +0000
                Re: Text Files bartc <bc@freeuk.com> - 2018-03-06 20:55 +0000
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-16 04:42 -0800
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 16:58 +0100
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 20:02 +0000
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 21:43 +0100
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-17 04:01 -0800
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-17 13:10 +0000
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-17 05:27 -0800
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-17 14:20 +0000
                Re: Text Files Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2018-02-16 09:04 -0700
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-16 14:31 +0000
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-16 06:42 -0800
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-16 14:58 +0000
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-16 07:23 -0800
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-16 15:24 +0000
              Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-16 04:13 -0800
                Re: Text Files Siri Cruise <chine.bleu@yahoo.com> - 2018-02-16 04:29 -0800
                Re: Text Files Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-02-20 16:41 +0000
                Re: Text Files Siri Cruise <chine.bleu@yahoo.com> - 2018-02-20 09:39 -0800
                Re: Text Files Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-02-20 19:16 +0000
  Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 12:46 +0000
    Re: Text Files GOTHIER Nathan <nathan.gothier@gmail.com> - 2018-02-15 14:52 +0100
    Re: Text Files Anton Shepelev <anton.txt@g{oogle}mail.com> - 2018-02-15 17:07 +0300
      Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 14:23 +0000
        Re: Text Files Anton Shepelev <anton.txt@g{oogle}mail.com> - 2018-02-15 18:52 +0300
    Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 14:39 +0000
      Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 15:43 +0000
        Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 20:32 +0000
          Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 22:06 +0000
            Re: Text Files GOTHIER Nathan <nathan.gothier@gmail.com> - 2018-02-15 23:12 +0100
            Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-15 15:12 -0800
              Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 23:43 +0000
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 23:54 +0000
            Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 23:35 +0000
          Re: Text Files Tim Rentsch <txr@alumni.caltech.edu> - 2018-02-16 17:07 -0800
            Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-17 02:38 +0000
              Re: Text Files Ian Collins <ian-news@hotmail.com> - 2018-02-17 17:26 +1300
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-17 11:22 +0000
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-17 12:07 +0000
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-17 04:17 -0800
                Re: Text Files Anton Shepelev <anton.txt@gmail.com> - 2018-02-17 16:25 +0300
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-17 07:35 -0800
                Re: Text Files GOTHIER Nathan <nathan.gothier@gmail.com> - 2018-02-17 15:24 +0100
                Re: Text Files Ian Collins <ian-news@hotmail.com> - 2018-02-18 11:10 +1300
              Re: Text Files Tim Rentsch <txr@alumni.caltech.edu> - 2018-02-19 12:05 -0800
                Re: Text Files already5chosen@yahoo.com - 2018-02-19 15:32 -0800
                Re: Text Files Tim Rentsch <txr@alumni.caltech.edu> - 2018-02-21 10:34 -0800
                Re: Text Files already5chosen@yahoo.com - 2018-02-21 15:35 -0800
                Re: Text Files bartc <bc@freeuk.com> - 2018-02-22 00:11 +0000
                Re: Text Files Robert Wessel <robertwessel2@yahoo.com> - 2018-02-21 18:26 -0600
                Re: Text Files Tim Rentsch <txr@alumni.caltech.edu> - 2018-02-21 21:39 -0800
                Re: Text Files Robert Wessel <robertwessel2@yahoo.com> - 2018-02-23 03:08 -0600
                Re: Text Files supercat@casperkitty.com - 2018-02-23 16:16 -0800
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-23 16:46 -0800
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-24 02:49 -0800
                Re: Text Files asetofsymbols@gmail.com - 2018-02-24 05:16 -0800
                Re: Text Files "F. Russell" <fr@random.info> - 2018-02-24 14:35 +0000
                Re: Text Files Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2018-02-24 08:48 -0700
                Re: Text Files supercat@casperkitty.com - 2018-02-25 15:09 -0800
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-25 15:54 -0800
                Re: Text Files supercat@casperkitty.com - 2018-02-26 11:04 -0800
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-26 11:52 -0800
                Re: Text Files supercat@casperkitty.com - 2018-02-26 14:12 -0800
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-26 14:40 -0800
                Re: Text Files already5chosen@yahoo.com - 2018-02-22 04:58 -0800
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-22 05:33 -0800
                Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-22 13:59 +0000
                Re: Text Files Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-02-22 07:24 -0800
              Re: Text Files supercat@casperkitty.com - 2018-02-20 12:14 -0800
        Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-15 21:37 +0100
          Re: Text Files bartc <bc@freeuk.com> - 2018-02-15 21:34 +0000
            Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-15 14:15 -0800
            Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-16 10:47 +0100
  Re: Text Files "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2018-02-15 22:20 +0800
  Re: Text Files "F. Russell" <fr@random.info> - 2018-02-15 15:24 +0000
    Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-15 16:05 +0000
    Re: Text Files "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2018-02-16 00:22 +0800
    Re: Text Files Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2018-02-15 13:35 -0700
  Re: Text Files Anton Shepelev <anton.txt@gmail.com> - 2018-02-25 00:13 +0300
    Re: Text Files bartc <bc@freeuk.com> - 2018-02-24 21:24 +0000
      Re: Text Files Anton Shepelev <anton.txt@gmail.com> - 2018-02-25 14:55 +0300
        Re: Text Files bartc <bc@freeuk.com> - 2018-02-25 13:00 +0000
    Re: Text Files Real Troll <Real.Troll@Trolls.com> - 2018-02-24 17:35 -0400
    Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-24 21:36 +0000
      Re: Text Files Real Troll <Real.Troll@Trolls.com> - 2018-02-24 17:45 -0400
      Re: Text Files Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-02-24 22:51 +0000
        Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-24 23:56 +0000
          Re: Text Files bartc <bc@freeuk.com> - 2018-02-25 00:14 +0000
            Re: Text Files bartc <bc@freeuk.com> - 2018-02-25 00:22 +0000
            Re: Text Files Anton Shepelev <anton.txt@gmail.com> - 2018-02-25 15:16 +0300
              Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-25 15:20 -0800
                Re: Text Files Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2018-02-25 20:27 -0700
                Re: Text Files gazelle@shell.xmission.com (Kenny McCormack) - 2018-02-26 06:19 +0000
                Re: Text Files Anton Shepelev <anton.txt@g{oogle}mail.com> - 2018-02-26 15:35 +0300
                Re: Text Files Reinhardt Behm <rbehm@hushmail.com> - 2018-02-26 20:53 +0800
                Grammar Patrol (Was: Text Files) gazelle@shell.xmission.com (Kenny McCormack) - 2018-02-26 17:54 +0000
                Re: Text Files Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-02-26 15:27 +0000
                Re: Text Files Anton Shepelev <anton.txt@g{oogle}mail.com> - 2018-02-26 18:50 +0300
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-26 09:26 -0800
                Re: Text Files scott@slp53.sl.home (Scott Lurndal) - 2018-02-26 19:46 +0000
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-27 09:04 +0100
                Re: Text Files already5chosen@yahoo.com - 2018-02-27 00:56 -0800
                Re: Text Files Ian Collins <ian-news@hotmail.com> - 2018-02-27 22:07 +1300
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-27 14:37 +0100
                Re: Text Files already5chosen@yahoo.com - 2018-02-27 07:38 -0800
                Re: Text Files supercat@casperkitty.com - 2018-02-27 09:18 -0800
                Re: Text Files David Brown <david.brown@hesbynett.no> - 2018-02-27 10:15 +0100
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-27 08:53 -0800
                Re: Text Files Tim Rentsch <txr@alumni.caltech.edu> - 2018-02-26 23:14 -0800
                Re: Text Files Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2018-02-26 08:32 -0700
                Re: Text Files Keith Thompson <kst-u@mib.org> - 2018-02-26 09:17 -0800
                Re: Text Files Tim Rentsch <txr@alumni.caltech.edu> - 2018-02-26 22:55 -0800
      Re: Text Files Anton Shepelev <anton.txt@gmail.com> - 2018-02-25 15:02 +0300
        Re: Text Files Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-02-25 20:12 +0000

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