Re: VAX

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From	Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups	comp.lang.c
Subject	Re: VAX
Date	Mon, 15 Dec 2025 11:51:43 -0800
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James Kuyper <jameskuyper@alumni.caltech.edu> writes:

> On 2025-08-05 17:25, Kaz Kylheku wrote:
>
>> On 2025-08-05, Keith Thompson <Keith.S.Thompson+u@gmail.com> wrote:
>>
>>> Breaking existing code that uses "_BitInt" as an identifier is
>>> a non-issue.  There very probably is no such code.
>>
>> However, that doesn't mean GCC can carelessly introduce identifiers
>> in this namespace.
>>
>> GCC does not define a complete C implementation;  it doesn't provide a
>> library.  Libraries are provided by other projects:  Glibc, Musl,
>> ucLibc, ...
>>
>> Those libraries are C implementors also, and get to name things
>> in the reserved namespace.
>
> GCC cannot be implemented in such a way as to create a fully conforming
> implementation of C when used in connection with an arbitrary
> implementation of the C standard library.  This is just one example of a
> more general potential problem:  Both gcc and the library must use some
> reserved identifiers, and they might have made conflicting choices. [...]

I'm not sure this assertion is right exactly.  The interface to any
implementation of the standard library is through a well-defined set
of header files.  In principle the rest of a C implementation could
examine those header files programmatically and systematically avoid
any conflicts.  Similarly the run-time libraries of the standard
library can be examined to avoid any conflicts there.  Certainly it
isn't convenient to construct such an implementation, but it does
seem to be possible.

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Re: VAX Michael S <already5chosen@yahoo.com> - 2025-08-04 18:28 +0300
  Re: VAX Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-08-04 09:53 -0700
    Re: VAX Michael S <already5chosen@yahoo.com> - 2025-08-04 22:03 +0300
      Re: VAX James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-08-04 15:25 -0400
        Re: VAX Michael S <already5chosen@yahoo.com> - 2025-08-04 22:40 +0300
          Re: VAX "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-08-04 12:44 -0700
          Re: VAX Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-08-04 22:21 -0700
            Re: VAX Kaz Kylheku <643-408-1753@kylheku.com> - 2025-08-05 21:25 +0000
              Re: VAX Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-08-05 19:14 -0700
                Re: VAX Kaz Kylheku <643-408-1753@kylheku.com> - 2025-08-06 04:31 +0000
                Re: VAX Michael S <already5chosen@yahoo.com> - 2025-08-06 11:48 +0300
              Re: VAX James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-08-06 11:56 -0400
                Re: VAX Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-12-15 11:51 -0800
          Re: VAX Kaz Kylheku <643-408-1753@kylheku.com> - 2025-08-05 21:13 +0000
            Re: VAX James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-08-06 11:54 -0400
              Re: VAX Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-08-06 13:58 -0700
                Re: VAX Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-01-06 21:33 -0800
      Re: VAX Kaz Kylheku <643-408-1753@kylheku.com> - 2025-08-05 21:08 +0000
        Re: VAX Jakob Bohm <egenagwemdimtapsar@jbohm.dk> - 2025-08-17 20:18 +0200
          Re: VAX Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-08-17 22:18 -0700
            Re: VAX Richard Heathfield <rjh@cpax.org.uk> - 2025-08-18 08:02 +0100
            Re: VAX David Brown <david.brown@hesbynett.no> - 2025-08-18 11:34 +0200
              Re: VAX Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-08-18 21:57 -0700
    Re: VAX Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-01-06 21:14 -0800

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