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Re: Is it possible to test if a raw pointer is pointing to a valid object?

From Manfred <noname@add.invalid>
Newsgroups comp.lang.c++
Subject Re: Is it possible to test if a raw pointer is pointing to a valid object?
Date 2022-08-26 02:26 +0200
Organization Aioe.org NNTP Server
Message-ID <te940g$1f3u$1@gioia.aioe.org> (permalink)
References (1 earlier) <te5mrp$3ceup$1@dont-email.me> <874jy1y1ss.fsf@nosuchdomain.example.com> <te5oet$3cjid$1@dont-email.me> <te5oh4$3cjid$2@dont-email.me> <87zgftwjq2.fsf@nosuchdomain.example.com>

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On 8/24/2022 8:59 PM, Keith Thompson wrote:
> JiiPee <kerrttuPoistaTama11@gmail.com> writes:
>> On 24/08/2022 20:51, JiiPee wrote:
>>> On 24/08/2022 20:44, Keith Thompson wrote:
>>>>> void main()
>>>> Of course main returns int, not void.  (I know that was in the parent
>>>> article.)
>>> but its shorter to type, hehe
>>
>> actually compiles in visual studio
> 
> Most C++ compilers aren't fully conforming by default.  Any conforming
> C++ implementation must diagnose `void main()` (and may then either
> accept it or reject it).
> 

Curiously, the C standard poses no requirements on main() for 
freestanding implementations.
Apparently the C++ standard does instead: it says that main() may not be 
present in a freestanding implementation, but, as it is written, if it 
is present then it must have int return type.

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Thread

Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-24 20:00 +0300
  Re: Is it possible to test if a raw pointer is pointing to a valid object? Paavo Helde <eesnimi@osa.pri.ee> - 2022-08-24 20:24 +0300
    Re: Is it possible to test if a raw pointer is pointing to a valid object? Paavo Helde <eesnimi@osa.pri.ee> - 2022-08-24 20:28 +0300
    Re: Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-24 20:39 +0300
    Re: Is it possible to test if a raw pointer is pointing to a valid object? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-24 10:44 -0700
      Re: Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-24 20:51 +0300
        Re: Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-24 20:52 +0300
          Re: Is it possible to test if a raw pointer is pointing to a valid object? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-24 11:59 -0700
            Re: Is it possible to test if a raw pointer is pointing to a valid object? Manfred <noname@add.invalid> - 2022-08-26 02:26 +0200
  Re: Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-24 20:41 +0300
    Re: Is it possible to test if a raw pointer is pointing to a valid object? Louis Krupp <lkrupp@invalid.pssw.com.invalid> - 2022-08-24 13:51 -0600
  Re: Is it possible to test if a raw pointer is pointing to a valid object? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2022-08-24 12:45 -0700
    Re: Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-24 23:17 +0300
      Re: Is it possible to test if a raw pointer is pointing to a valid object? scott@slp53.sl.home (Scott Lurndal) - 2022-08-24 20:54 +0000
        Re: Is it possible to test if a raw pointer is pointing to a valid object? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2022-08-24 14:57 -0700
          Re: Is it possible to test if a raw pointer is pointing to a valid object? Vir Campestris <vir.campestris@invalid.invalid> - 2022-08-25 12:52 +0100
  Re: Is it possible to test if a raw pointer is pointing to a valid         object? Sam <sam@email-scan.com> - 2022-08-24 20:21 -0400
  Re: Is it possible to test if a raw pointer is pointing to a valid object? Bonita Montero <Bonita.Montero@gmail.com> - 2022-08-25 07:39 +0200
    Re: Is it possible to test if a raw pointer is pointing to a valid object? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2022-08-25 03:37 -0700
      Re: Is it possible to test if a raw pointer is pointing to a valid         object? Sam <sam@email-scan.com> - 2022-08-25 09:37 -0400
      Re: Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-25 17:28 +0300
        Re: Is it possible to test if a raw pointer is pointing to a valid         object? Sam <sam@email-scan.com> - 2022-08-25 19:39 -0400
        Re: Is it possible to test if a raw pointer is pointing to a valid object? Paul N <gw7rib@aol.com> - 2022-08-26 05:49 -0700
          Re: Is it possible to test if a raw pointer is pointing to a valid object? JiiPee <kerrttuPoistaTama11@gmail.com> - 2022-08-26 19:35 +0300
            Re: Is it possible to test if a raw pointer is pointing to a valid object? Louis Krupp <lkrupp@invalid.pssw.com.invalid> - 2022-08-26 12:25 -0600
      Re: Is it possible to test if a raw pointer is pointing to a valid object? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-08-25 11:38 -0700
  Re: Is it possible to test if a raw pointer is pointing to a valid object? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-08-26 16:08 -0500

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