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Re: Pre-main construction order in modules

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From Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups comp.lang.c++
Subject Re: Pre-main construction order in modules
Date Tue, 01 Apr 2025 14:20:49 -0700
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Michael S <already5chosen@yahoo.com> writes:
> On Tue, 1 Apr 2025 13:55:43 -0400
> James Kuyper <jameskuyper@alumni.caltech.edu> wrote:
>> On 4/1/25 00:29, Jakob Bohm wrote:
>> > However treating the standard text as an imperfect description of 
>> > traditional compiler techniques used for 2nd. Edition compilers
>> > makes much more sense .  
>> 
>> No, that does not. The standard was never intended as a description of
>> how compilers actually work, it was always intended to be a
>> description of requirements on how they should work.
>
> It sounds to me like a revisionisms.
> Most language standards are intended to codify commonalities of work of
> existing compilers. That applies to C++98 and mostly, although not
> completely, to the following C++ standards. 

I disagree.  Many language standards are *based on* the behavior
of existing compilers.  In the case of C, for example, there were
multiple implementations before the first standard was published, and
the standard was largely based on their behavior (and on K&R1).  The
C++ standard evolved similarly; there were several implementations
and books before the first C++ standard was published.

But once a standard is published, it is a set of requirements on
conforming implementations and programs.  Note in particular that
standards typically don't mention any specific implementations,
and that implementations have had to be changed to satisfy the
standard's requirements.

I think of a language standard as a proposed contract between
implementers and programmers.  If an implementation claims
conformance, programmers have a right to expect conforming code to
behave as specified by the standard.  But neither implementers nor
programmers are necessarily required to accept the contract.

> There exist exceptions, for example, Ada83. But they are exceptions.

Ada 83 was unusual in the sense that the standard was deliberately
developed first, and implementations followed (though a lot of it
was based on other existing languages).  But once published, the
Ada standard served much the same purpose as the C and C++ standards.

-- 
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
void Void(void) { Void(); } /* The recursive call of the void */

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Thread

Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-03-30 08:57 +0000
  Re: Pre-main construction order in modules Richard Damon <richard@damon-family.org> - 2025-03-30 07:21 -0400
    Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 16:22 +0000
      Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-30 19:56 +0200
        Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 18:00 +0000
  Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-30 10:38 -0400
    Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-03-30 15:30 +0000
      Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 15:59 +0000
        Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-03-30 16:09 +0000
          Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 16:17 +0000
            Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-03-30 16:23 +0000
              Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 16:26 +0000
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-03-31 08:20 +0000
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-31 10:46 +0200
                Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-03-31 11:56 +0300
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-31 11:11 +0200
                Re: Pre-main construction order in modules Richard Damon <richard@damon-family.org> - 2025-03-31 07:25 -0400
                Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-03-31 15:26 +0300
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-31 14:32 +0200
                Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-03-31 15:44 +0300
                Re: Pre-main construction order in modules Jakob Bohm <egenagwemdimtapsar@jbohm.dk> - 2025-04-01 06:06 +0200
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-04-01 08:41 +0200
                Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-04-01 11:41 +0300
                Re: Pre-main construction order in modules Richard Damon <richard@damon-family.org> - 2025-03-31 07:22 -0400
              Re: Pre-main construction order in modules Richard Damon <richard@damon-family.org> - 2025-03-30 15:05 -0400
            Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-30 19:58 +0200
              Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 18:02 +0000
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-30 20:05 +0200
                Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 18:07 +0000
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-30 20:08 +0200
                Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 18:11 +0000
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-30 20:17 +0200
                Re: Pre-main construction order in modules Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-30 18:20 +0000
                Re: Pre-main construction order in modules Richard Damon <richard@damon-family.org> - 2025-03-30 15:01 -0400
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-30 22:15 +0200
                Re: Pre-main construction order in modules "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-03-30 13:57 -0700
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-31 07:37 +0200
                Re: Pre-main construction order in modules "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-03-31 21:54 -0700
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-04-01 08:41 +0200
                Re: Pre-main construction order in modules "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-04-01 00:00 -0700
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-04-01 11:42 +0200
                Re: Pre-main construction order in modules "Fred. Zwarts" <F.Zwarts@HetNet.nl> - 2025-04-01 12:00 +0200
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-04-01 14:16 +0200
                Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-04-01 16:03 +0200
      Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-03-31 11:49 +0300
        Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-03-31 09:09 +0000
          Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-03-31 15:39 +0300
            Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-03-31 14:01 +0000
              Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-03-31 20:06 +0300
              Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-31 19:42 -0400
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-04-01 07:26 +0000
                Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-04-01 11:48 +0300
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-04-01 08:57 +0000
                Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-04-01 12:21 +0300
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-04-01 10:08 +0000
                Re: Pre-main construction order in modules Michael S <already5chosen@yahoo.com> - 2025-04-01 13:12 +0300
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-04-01 10:23 +0000
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-04-01 10:27 +0000
                Re: Pre-main construction order in modules Michael S <already5chosen@yahoo.com> - 2025-04-01 13:20 +0300
                Re: Pre-main construction order in modules Paavo Helde <eesnimi@osa.pri.ee> - 2025-04-01 13:33 +0300
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-04-01 10:48 +0000
                Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-04-01 14:37 -0400
                Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-04-01 14:37 -0400
                Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-04-01 14:32 -0400
                Re: Pre-main construction order in modules "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-04-01 12:39 -0700
                Re: Pre-main construction order in modules Michael S <already5chosen@yahoo.com> - 2025-04-01 23:26 +0300
                Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-04-01 19:08 -0400
                Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-04-01 22:55 -0400
                Re: Pre-main construction order in modules Muttley@DastardlyHQ.org - 2025-04-02 07:34 +0000
        Re: Pre-main construction order in modules scott@slp53.sl.home (Scott Lurndal) - 2025-03-31 14:15 +0000
          Re: Pre-main construction order in modules Bonita Montero <Bonita.Montero@gmail.com> - 2025-03-31 16:47 +0200
      Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-31 10:29 -0400
        Re: Pre-main construction order in modules Jakob Bohm <egenagwemdimtapsar@jbohm.dk> - 2025-04-01 06:29 +0200
          Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-04-01 13:55 -0400
            Re: Pre-main construction order in modules Michael S <already5chosen@yahoo.com> - 2025-04-01 23:10 +0300
              Re: Pre-main construction order in modules Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-04-01 14:20 -0700
              Re: Pre-main construction order in modules James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-04-01 18:57 -0400
              Re: Pre-main construction order in modules David Brown <david.brown@hesbynett.no> - 2025-04-02 10:29 +0200

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