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Re: error: initializer element is not constant|

Subject Re: error: initializer element is not constant|
Newsgroups comp.lang.c
References (3 earlier) <gmXPA.1653357$Pm3.1121619@fx42.am4> <oepglk$1vlt$1@gioia.aioe.org> <87lgq7d2ko.fsf@bsb.me.uk> <QLZPA.591546$QG3.496846@fx17.am4> <871srzch8a.fsf@bsb.me.uk>
From bartc <bc@freeuk.com>
Message-ID <GU3QA.2037$Aj7.1745@fx33.am4> (permalink)
Organization virginmedia.com
Date 2017-05-08 20:44 +0100

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On 08/05/2017 19:53, Ben Bacarisse wrote:
> bartc <bc@freeuk.com> writes:
>
>> On 08/05/2017 12:12, Ben Bacarisse wrote:
>>> jak <please@nospam.tnx> writes:
>>>
>>>> Il 08/05/2017 12:01, bartc ha scritto:
>>> <snip>
>>>>> In C, declaring the type of a variable is optional,
>>>
>>> Not for nearly two decades.  If you can ask the compiler to follow a
>>> modern standard, you will be told about such things.
>>
>> If I say -std=c99 or -std=c11 to gcc, it still just gives me a warning
>> about implicit int.
>>
>> Ergo, it is still optional.
>
> No.  You are (again) drawing unwarranted conclusions about C from what
> gcc tells you.

Most people can only use C via a compiler.

The compilers I've tried don't seem to rigorously enforce the 
requirement that variables and functions must have an explicit type:

    a=1234;           // at file scope

pelles c           warning
lccwin             warning
dmc                nothing
gcc                warning
tiny c             nothing

All run with default options, except gcc which is the only one where I 
know how to specify a standard.

(My own compiler allowed implicit types because I thought it had to. But 
now it no longer does so and a hard error is reported.)

Maybe, as Keith suggested, the fault is also with the language in not 
requiring such errors to be reported seriously.

(All the compilers on godbolt.org report this as an actual error. But I 
think they are compiling as C++ not C.)

-- 
bartc

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Thread

error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-08 09:55 +0200
  Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-08 10:05 +0200
  Re: error: initializer element is not constant| Noob <root@127.0.0.1> - 2017-05-08 10:38 +0200
    Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-08 11:55 +0200
      Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-08 11:01 +0100
        Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-08 12:18 +0200
          Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-08 12:02 +0100
            Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-08 09:00 -0700
              Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-08 17:50 +0100
                Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-08 11:37 -0700
                Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-08 19:49 +0100
                Re: error: initializer element is not constant| Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-08 20:13 +0100
                Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-08 12:44 -0700
                Re: error: initializer element is not constant| scott@slp53.sl.home (Scott Lurndal) - 2017-05-08 20:24 +0000
            Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-09 09:54 +0200
              Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-09 10:15 +0200
              Re: error: initializer element is not constant| GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-05-09 12:12 +0200
              Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-09 11:47 +0100
                Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-09 19:06 +0200
                Re: error: initializer element is not constant| scott@slp53.sl.home (Scott Lurndal) - 2017-05-09 17:10 +0000
                Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-09 19:20 +0200
                Re: error: initializer element is not constant| Barry Schwarz <schwarzb@dqel.com> - 2017-05-09 10:35 -0700
                Re: error: initializer element is not constant| jak <please@nospam.tnx> - 2017-05-09 20:04 +0200
                Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-09 11:57 -0700
                Re: error: initializer element is not constant| supercat@casperkitty.com - 2017-05-09 12:50 -0700
                Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-09 12:54 -0700
                Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-09 20:15 +0100
                Re: error: initializer element is not constant| "James R. Kuyper" <jameskuyper@verizon.net> - 2017-05-09 14:13 -0400
                Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-09 11:41 -0700
              Re: error: initializer element is not constant| Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-09 12:16 +0100
              Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-09 08:11 -0700
          Re: error: initializer element is not constant| Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-08 12:12 +0100
            Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-08 13:45 +0100
              Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-08 09:04 -0700
              Re: error: initializer element is not constant| Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-08 19:53 +0100
                Re: error: initializer element is not constant| bartc <bc@freeuk.com> - 2017-05-08 20:44 +0100
                Re: error: initializer element is not constant| Noob <root@127.0.0.1> - 2017-05-09 09:27 +0200
              Re: error: initializer element is not constant| Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-09 07:10 -0700
            Re: error: initializer element is not constant| Keith Thompson <kst-u@mib.org> - 2017-05-08 09:30 -0700
  Re: error: initializer element is not constant| John Bode <jfbode1029@gmail.com> - 2017-05-08 08:05 -0700

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