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Groups > comp.lang.c > #110066

Re: https://github.com/bartg/langs/tree/master/bccproj

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: https://github.com/bartg/langs/tree/master/bccproj
Date 2017-05-15 11:54 -0700
Organization None to speak of
Message-ID <lno9uu3q8a.fsf@kst-u.example.com> (permalink)
References (15 earlier) <db87d89f-6ab3-4d9c-96a6-9a3feef0a8fc@googlegroups.com> <5912e8b6.1482718@news.xs4all.nl> <4ff88e50-f208-411e-8d69-e0710a03bec2@googlegroups.com> <kfnziefqlck.fsf@x-alumni2.alumni.caltech.edu> <34bdc6a9-a31a-4051-be03-de6b3158d44e@googlegroups.com>

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supercat@casperkitty.com writes:
[...]
> On the other hand, I see no evidence that allowances for integer treatments
> other than silent-wraparound or silent (and not necessarily consistent)
> promotion were intended for any purpose other than to either facilitate
> implementations on hardware whose underlying semantics were inconsistent
> with those, or to allow for implementations that would affirmatively trap
> integer overflow *in documented fashion*.  I am aware of *ZERO* twentieth-
> century evidence that anyone of note thought that quality implementations
> for two's-complement hardware should not be expected to either yield some
> possibly-meaningless result, trap in documented fashion, or choose in
> Unspecified fashion between those two behaviors.

The phrase "the behavior is undefined" in C90 6.3, 5th paragraph,
is not sufficient evidence for you?

-- 
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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https://github.com/bartg/langs/tree/master/bccproj jacobnavia <jacob@jacob.remcomp.fr> - 2017-04-24 23:33 +0200
  Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-24 23:14 +0100
    Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-25 00:31 +0100
    Re: https://github.com/bartg/langs/tree/master/bccproj scott@slp53.sl.home (Scott Lurndal) - 2017-04-25 14:46 +0000
      Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-25 17:05 +0100
        Re: https://github.com/bartg/langs/tree/master/bccproj Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-04-26 01:32 +0100
          Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-26 11:32 +0100
            Re: https://github.com/bartg/langs/tree/master/bccproj Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-04-26 12:09 +0100
              Re: https://github.com/bartg/langs/tree/master/bccproj Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-27 14:32 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-04-28 06:23 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj scott@slp53.sl.home (Scott Lurndal) - 2017-04-28 14:26 +0000
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-04-28 11:04 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj scott@slp53.sl.home (Scott Lurndal) - 2017-04-28 18:26 +0000
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-04-28 12:59 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj scott@slp53.sl.home (Scott Lurndal) - 2017-04-28 20:29 +0000
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-28 17:35 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-04-28 13:21 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-28 22:35 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-01 05:16 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-01 13:47 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-03 05:16 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-05 18:46 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-06 12:00 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj David Kleinecke <dkleinecke@gmail.com> - 2017-05-06 12:01 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-06 12:15 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj David Kleinecke <dkleinecke@gmail.com> - 2017-05-06 14:03 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-08 05:53 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 14:26 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-08 07:10 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 15:36 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 15:43 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj David Kleinecke <dkleinecke@gmail.com> - 2017-05-08 12:06 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-08 11:02 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 19:46 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-08 12:23 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 21:08 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-08 13:26 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-05-08 13:32 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-08 13:40 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 21:33 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-08 13:30 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 22:00 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-05-08 22:18 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-08 18:12 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-09 07:04 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Ian Collins <ian-news@hotmail.com> - 2017-05-10 07:50 +1200
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-09 13:31 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Ian Collins <ian-news@hotmail.com> - 2017-05-10 08:58 +1200
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-09 14:25 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Philip Lantz <prl@canterey.us> - 2017-05-18 05:45 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj scott@slp53.sl.home (Scott Lurndal) - 2017-05-18 14:02 +0000
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-18 07:22 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Robert Wessel <robertwessel2@yahoo.com> - 2017-05-18 22:27 -0500
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-19 08:29 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-05-10 14:32 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj raltbos@xs4all.nl (Richard Bos) - 2017-05-10 10:19 +0000
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-10 09:51 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj scott@slp53.sl.home (Scott Lurndal) - 2017-05-10 17:37 +0000
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-10 10:53 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-14 12:39 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-15 07:58 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-05-15 11:54 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-15 12:25 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-05-15 15:20 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-15 15:43 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-16 04:38 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-16 12:48 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-24 08:12 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-24 09:10 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Ian Collins <ian-news@hotmail.com> - 2017-05-25 07:22 +1200
                Re: https://github.com/bartg/langs/tree/master/bccproj Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-27 06:03 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-05-27 11:42 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj raltbos@xs4all.nl (Richard Bos) - 2017-05-15 12:34 +0000
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-05-15 08:02 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-08 18:24 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-10 05:32 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Thiago Adams <thiago.adams@gmail.com> - 2017-05-06 12:04 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-04-28 09:53 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-04-28 19:47 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-04-28 11:56 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-04-28 12:21 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-04-28 13:07 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-04-28 22:23 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-04-28 14:03 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-04-28 14:57 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-04-28 15:57 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-04-28 11:49 -0700
            Re: https://github.com/bartg/langs/tree/master/bccproj jacobnavia <jacob@jacob.remcomp.fr> - 2017-04-26 13:31 +0200
              Re: https://github.com/bartg/langs/tree/master/bccproj GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-04-26 15:14 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-26 15:10 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-04-26 16:36 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-04-26 08:49 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-04-26 20:44 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-04-26 21:02 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-04-26 22:07 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-04-26 22:56 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-04-27 11:16 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj Richard Heathfield <rjh@cpax.org.uk> - 2017-04-27 10:53 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-04-27 12:56 +0200
                Re: https://github.com/bartg/langs/tree/master/bccproj "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-04-27 04:13 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj bartc <bc@freeuk.com> - 2017-04-27 12:27 +0100
                Re: https://github.com/bartg/langs/tree/master/bccproj "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-04-27 06:05 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Ian Collins <ian-news@hotmail.com> - 2017-04-27 09:38 +1200
                Re: https://github.com/bartg/langs/tree/master/bccproj David Kleinecke <dkleinecke@gmail.com> - 2017-04-26 17:40 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Geoff <geoff@invalid.invalid> - 2017-04-26 22:22 -0700
                Re: https://github.com/bartg/langs/tree/master/bccproj Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-04-27 01:45 -0700
        Re: https://github.com/bartg/langs/tree/master/bccproj Geoff <geoff@invalid.invalid> - 2017-04-26 21:55 -0700
          Re: https://github.com/bartg/langs/tree/master/bccproj David Brown <david.brown@hesbynett.no> - 2017-04-27 11:25 +0200
            Re: https://github.com/bartg/langs/tree/master/bccproj "James R. Kuyper" <jameskuyper@verizon.net> - 2017-04-27 12:59 -0400
          Re: https://github.com/bartg/langs/tree/master/bccproj GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-04-27 15:03 +0200
            Re: https://github.com/bartg/langs/tree/master/bccproj scott@slp53.sl.home (Scott Lurndal) - 2017-04-27 13:27 +0000
      Re: https://github.com/bartg/langs/tree/master/bccproj GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-04-26 01:29 +0200
      Re: https://github.com/bartg/langs/tree/master/bccproj Philip Lantz <prl@canterey.us> - 2017-04-26 10:14 -0700
        Re: https://github.com/bartg/langs/tree/master/bccproj supercat@casperkitty.com - 2017-04-26 12:25 -0700
  Re: https://github.com/bartg/langs/tree/master/bccproj Keith Thompson <kst-u@mib.org> - 2017-04-24 15:26 -0700
  Re: https://github.com/bartg/langs/tree/master/bccproj jacobnavia <jacob@jacob.remcomp.fr> - 2017-04-26 11:36 +0200

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