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 06:27 +0000
Organization	Aioe.org NNTP Server
Message-ID	<tp0hrr$iih$2@gioia.aioe.org> (permalink)
References	(2 earlier) <tol0b7$dnjr$1@dont-email.me> <tonjq0$ihs$1@gioia.aioe.org> <tonlf4$p0hj$1@dont-email.me> <topj40$hak$1@gioia.aioe.org> <topl5s$11pd6$2@dont-email.me>

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David Brown <david.brown@hesbynett.no> wrote:
>> One warning, or was it actually an error, that does annoy me quite a bit
>> is the "narrowing conversion" thingie. I think it was introduced in C++11
>> or newer, and was never a problem before. To this day I'm not sure why
>> that warning/error is necessary.
>> 
>> (Maybe it has something to do with uniform initialization, which turned
>> out to be quite a mess?)
> 
> I think warnings (or errors) about narrowing conversions are a good 
> idea.  If I accidentally try to use a double as an integer, I'd rather 
> be told.

The problem is that the "narrowing" warning/error is only issued when
eg. using a double within an initializer list that expects a float,
it doesn't happen in *any* other situation where a double is being
implicitly converted into a float.

I cannot comprehend the reason to make that one particular situation
special.

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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