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Groups > comp.lang.c++ > #67802
| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: An example: code to list exports of a Windows DLL. |
| Date | 2019-08-20 02:18 -0700 |
| Organization | None to speak of |
| Message-ID | <lnwof82o0v.fsf@kst-u.example.com> (permalink) |
| References | <qi042o$if8$1@dont-email.me> <qjeu6n$gcq$1@news.xmission.com> <qjfdtk$qgu$1@dont-email.me> <ln1rxg4o6t.fsf@kst-u.example.com> <qjg4nq$u1t$1@dont-email.me> |
David Brown <david.brown@hesbynett.no> writes:
> On 20/08/2019 03:31, Keith Thompson wrote:
>> "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> writes:
>>> On 19.08.2019 21:44, Richard wrote:
>>>> "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> spake the secret code
>>>> <qi042o$if8$1@dont-email.me> thusly:
>>>>
>>>>> The $ things in the following code are macros from the specified
>>>>> header-only library on GitHub.
>>>>
>>>> Can you tell me where in the standard it allows for $ to be part of an
>>>> identifier?
>>>>
>>>> I'm looking at 5.10 in N4659 (Draft C++17) and don't see it.
>>>
>>> In the future you might risk that people think you're a total novice,
>>> one who doesn't even know the basics of identifiers in C++.
>>
>> Then I'll risk the same thing. Can you explain where C++17 permits $
>> in identifiers (or where it permits compilers to permit it)?
>
> It doesn't.
>
>> I believe that both foo$bar and foo\u0024bar violate a diagnosable rule
>> and therefore require a diagnostic from any conforming compiler (which
>> implies that gcc is non-conforming).
>
> You get the warning with "-Wpedantic" and an appropriate "-std" C++
> standard (and perhaps an appropriate version of gcc).
Can you demonstrate that? I haven't been able to do so, with several
versions of g++ (up to and including a bleeding-edge version I built
from source a week and a half ago). Here's the test case I used:
#include <iostream>
int main() {
const int foo$bar = 42;
std::cout << foo$bar << "\n";
}
compiled with "g++ -Wpedantic -std=c++17". No warning from any version
I have on my system.
>> Or perhaps I'm missing something (always a real possibility).
>
> What you are missing is that $ is accepted in identifiers in many
> compilers, and Alf simply does not care that it is not supported in the
> standards as long as it is supported in the compilers he uses.
Please don't assume that I missed it just because I didn't discuss it.
My post was about whether the C++ standard permits compilers to
permit $ in identifiers. (I presume we can all agree that compilers
aren't *required* to accept $ in identifiers.) C++11 clearly does
permit it, since it explicitly allows "other implementation-defined
characters" in identifiers. C++17 apparently does not, since it
dropped that wording (apparently in the belief that it was redundant,
but I don't believe it was).
[...]
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Will write code for food.
void Void(void) { Void(); } /* The recursive call of the void */
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An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-02 03:36 +0200
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-02 11:22 +0200
Re: An example: code to list exports of a Windows DLL. rick.c.hodgin@gmail.com - 2019-08-02 02:33 -0700
Re: An example: code to list exports of a Windows DLL. "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-02 16:54 -0700
Re: An example: code to list exports of a Windows DLL. "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-02 19:09 -0700
Now on Github; based ordinals in listing (Re: An example: code to list exports of a Windows DLL.) "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-02 20:20 +0200
Re: An example: code to list exports of a Windows DLL. legalize+jeeves@mail.xmission.com (Richard) - 2019-08-19 19:44 +0000
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-20 02:12 +0200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-19 18:31 -0700
Re: An example: code to list exports of a Windows DLL. David Brown <david.brown@hesbynett.no> - 2019-08-20 08:42 +0200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-20 02:18 -0700
Re: An example: code to list exports of a Windows DLL. Ian Collins <ian-news@hotmail.com> - 2019-08-20 22:22 +1200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-20 14:21 -0700
Re: An example: code to list exports of a Windows DLL. David Brown <david.brown@hesbynett.no> - 2019-08-20 13:00 +0200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-20 14:59 -0700
Re: An example: code to list exports of a Windows DLL. David Brown <david.brown@hesbynett.no> - 2019-08-21 10:29 +0200
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-21 11:14 +0200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-21 02:55 -0700
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-21 12:30 +0200
Re: An example: code to list exports of a Windows DLL. David Brown <david.brown@hesbynett.no> - 2019-08-21 14:22 +0200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-21 12:41 -0700
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-22 03:38 +0200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-21 19:24 -0700
Re: An example: code to list exports of a Windows DLL. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-21 23:21 -0400
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-22 06:01 +0200
Re: An example: code to list exports of a Windows DLL. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-22 00:26 -0400
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-22 07:54 +0200
Re: An example: code to list exports of a Windows DLL. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-22 09:08 -0400
Re: An example: code to list exports of a Windows DLL. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-22 19:37 +0200
Re: An example: code to list exports of a Windows DLL. scott@slp53.sl.home (Scott Lurndal) - 2019-08-22 13:17 +0000
Re: An example: code to list exports of a Windows DLL. David Brown <david.brown@hesbynett.no> - 2019-08-22 16:07 +0200
Re: An example: code to list exports of a Windows DLL. Keith Thompson <kst-u@mib.org> - 2019-08-21 02:42 -0700
Re: An example: code to list exports of a Windows DLL. Frederick Gotham <cauldwell.thomas@gmail.com> - 2019-08-20 04:09 -0700
Re: An example: code to list exports of a Windows DLL. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-08-20 17:24 -0700
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