Re: g++ -c -Werror -Weverything exercise_2_17.cpp

From	Juha Nieminen <nospam@thanks.invalid>
Newsgroups	comp.lang.c++
Subject	Re: g++ -c -Werror -Weverything exercise_2_17.cpp
Date	2023-01-03 09:13 +0000
Organization	Aioe.org NNTP Server
Message-ID	<tp0rjt$4ea$1@gioia.aioe.org> (permalink)
References	(4 earlier) <tonlf4$p0hj$1@dont-email.me> <topj40$hak$1@gioia.aioe.org> <topl5s$11pd6$2@dont-email.me> <tp0hrr$iih$2@gioia.aioe.org> <tp0mqs$22vmh$1@dont-email.me>

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David Brown <david.brown@hesbynett.no> wrote:
>> I cannot comprehend the reason to make that one particular situation
>> special.
> 
> It is better than nothing.

Now that I think about it, I actually don't know if the "narrowing
conversion" warning given by gcc (and I think also clang) when such
a conversion happens in initializer lists in particular is just
because the developers of the compiler decided so, or whether the
newer C++ standards mandate something along those lines.

However, looking it up, it seems that indeed the C++11 standard
forbids list-initialization with implicit narrowing conversions.
(It also seems to disallow it for aggregate initialization.)

It's a bit annoying to have this inconsistency in the language.
(Overall, as great as "uniform initialization" sounds on paper,
in practice it causes a lot of headaches. At a very minimum they
should have used a different syntax for initializer lists.)

Thread

g++  -c -Werror -Weverything exercise_2_17.cpp "gdo...@gmail.com" <gdotone@gmail.com> - 2022-12-27 01:22 -0800
  Re: g++ -c -Werror -Weverything exercise_2_17.cpp Öö Tiib <ootiib@hot.ee> - 2022-12-27 02:50 -0800
  Re: g++  -c -Werror -Weverything exercise_2_17.cpp Juha Nieminen <nospam@thanks.invalid> - 2022-12-29 20:33 +0000
    Re: g++ -c -Werror -Weverything exercise_2_17.cpp Paavo Helde <eesnimi@osa.pri.ee> - 2022-12-29 23:20 +0200
      Re: g++ -c -Werror -Weverything exercise_2_17.cpp Juha Nieminen <nospam@thanks.invalid> - 2022-12-30 21:05 +0000
        Re: g++ -c -Werror -Weverything exercise_2_17.cpp Paavo Helde <eesnimi@osa.pri.ee> - 2022-12-30 23:33 +0200
          Re: g++ -c -Werror -Weverything exercise_2_17.cpp Juha Nieminen <nospam@thanks.invalid> - 2022-12-31 15:05 +0000
            Re: g++ -c -Werror -Weverything exercise_2_17.cpp David Brown <david.brown@hesbynett.no> - 2022-12-31 16:40 +0100
              Re: g++ -c -Werror -Weverything exercise_2_17.cpp Juha Nieminen <nospam@thanks.invalid> - 2023-01-03 06:27 +0000
                Re: g++ -c -Werror -Weverything exercise_2_17.cpp David Brown <david.brown@hesbynett.no> - 2023-01-03 08:51 +0100
                Re: g++ -c -Werror -Weverything exercise_2_17.cpp Juha Nieminen <nospam@thanks.invalid> - 2023-01-03 09:13 +0000
                Re: g++ -c -Werror -Weverything exercise_2_17.cpp David Brown <david.brown@hesbynett.no> - 2023-01-03 11:47 +0100
            Re: g++ -c -Werror -Weverything exercise_2_17.cpp Paavo Helde <eesnimi@osa.pri.ee> - 2022-12-31 18:50 +0200
              Re: g++ -c -Werror -Weverything exercise_2_17.cpp David Brown <david.brown@hesbynett.no> - 2022-12-31 18:47 +0100

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