Re: Variable naming issue

From	Noob <root@127.0.0.1>
Newsgroups	comp.lang.c
Subject	Re: Variable naming issue
Date	2017-04-26 08:46 +0200
Organization	A noiseless patient Spider
Message-ID	<odpfi7$kmj$1@dont-email.me> (permalink)
References	<daaca66f-c8ff-41f3-99b2-d4c457b96959@googlegroups.com> <YswLA.477560$UY3.417968@fx11.am4> <odmu6j$mg$1@dont-email.me> <OPELA.457019$5u1.273856@fx03.am4>

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On 25/04/2017 11:40, bartc wrote:
> On 25/04/2017 08:37, Noob wrote:
>> On 25/04/2017 02:09, bartc wrote:
>>
>>> It's silly really because it can be literally a one-line change in a
>>> compiler to allow $.
>>
>> Are you generating machine code or assembly?
> 
> Huh? We're talking about input source not output.

OK, Mr Smarty Pants. How do you deal with identifiers with
external linkage? (C99 6.2.2)


> We're in the 21st century, not back in the 70s where names were limited 
> to 6 upper case characters (because of 'radix-50' or 'sixbit' or whatever).

New features have cost-benefit trade-offs.
It's impossible to perform a useful analysis when one's
experience is limited to Windows/x86.


>> If the latter, did you write the assembler, or do you rely
>> on the system's assembler?
> 
> Let me reiterate, in either a compiler /or/ assembler, support for $ can 
> be a one-line change from:

Do you believe I didn't understand the first time?


> In the rare case of a compiler working with an existing assembler that
> doesn't support '$' (or any other character, eg. Unicode), then it will 
> need to devise some escape mechanism. Not take it out on the user by 
> saying you can't do this because there might be the odd assembler out 
> there that can't handle it.

I checked for gas, the assembler overwhelmingly used on
Linux and *BSD systems.

https://sourceware.org/binutils/docs/as/Symbol-Intro.html
https://sourceware.org/binutils/docs/as/Symbol-Names.html

    Symbol names begin with a letter or with one of `._'. On most
    machines, you can also use $ in symbol names; exceptions are noted in
    Machine Dependencies. That character may be followed by any string of
    digits, letters, dollar signs (unless otherwise noted for a
    particular target machine), and underscores.
Are you suggesting gcc, clang, icc, and every other compiler ever
made should implement the same "escape mechanism"? Then this would
have to be part of some standard, presumably ISO/IEC 9899?

EOT

Thread

Variable naming issue maximus fl <ajones2600@gmail.com> - 2017-04-24 16:17 -0700
  Re: Variable naming issue David Kleinecke <dkleinecke@gmail.com> - 2017-04-24 16:28 -0700
  Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 01:09 +0100
    Re: Variable naming issue Noob <root@127.0.0.1> - 2017-04-25 09:37 +0200
      Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 10:40 +0100
        Re: Variable naming issue David Brown <david.brown@hesbynett.no> - 2017-04-25 13:07 +0200
          Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 13:24 +0100
            Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 13:27 +0100
            Re: Variable naming issue Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-04-25 13:59 +0100
              Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 14:20 +0100
                Re: Variable naming issue Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-04-25 14:27 +0100
                Re: Variable naming issue Keith Thompson <kst-u@mib.org> - 2017-04-25 11:52 -0700
                Re: Variable naming issue Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-04-25 13:40 -0700
                Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 22:14 +0100
                Re: Variable naming issue David Brown <david.brown@hesbynett.no> - 2017-04-26 00:16 +0200
                Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-26 00:13 +0100
                Re: Variable naming issue David Brown <david.brown@hesbynett.no> - 2017-04-26 10:10 +0200
                Re: Variable naming issue supercat@casperkitty.com - 2017-04-25 14:33 -0700
                Re: Variable naming issue Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-04-25 06:39 -0700
                Re: Variable naming issue Robert Wessel <robertwessel2@yahoo.com> - 2017-04-25 09:35 -0500
              Re: Variable naming issue Gareth Owen <gwowen@gmail.com> - 2017-04-25 18:39 +0100
                Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 18:49 +0100
                Re: Variable naming issue David Kleinecke <dkleinecke@gmail.com> - 2017-04-25 11:19 -0700
                Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-25 19:31 +0100
                Re: Variable naming issue Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-04-25 23:36 +0100
                Re: Variable naming issue David Kleinecke <dkleinecke@gmail.com> - 2017-04-25 17:04 -0700
                Re: Variable naming issue Robert Wessel <robertwessel2@yahoo.com> - 2017-04-26 00:32 -0500
            Re: Variable naming issue David Brown <david.brown@hesbynett.no> - 2017-04-25 16:02 +0200
            Re: Variable naming issue Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-02 05:25 -0700
              Re: Variable naming issue supercat@casperkitty.com - 2017-05-02 10:04 -0700
                Re: Variable naming issue Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-05 03:06 -0700
          Re: Variable naming issue supercat@casperkitty.com - 2017-04-25 07:12 -0700
          Re: Variable naming issue Robert Wessel <robertwessel2@yahoo.com> - 2017-04-25 09:48 -0500
            Re: Variable naming issue Robert Wessel <robertwessel2@yahoo.com> - 2017-04-25 09:52 -0500
        Re: Variable naming issue Noob <root@127.0.0.1> - 2017-04-26 08:46 +0200
          Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-26 11:46 +0100
          Re: Variable naming issue bartc <bc@freeuk.com> - 2017-04-26 12:00 +0100
        Re: Variable naming issue gordonb.o1c18@burditt.org (Gordon Burditt) - 2017-05-07 22:25 -0500
          Re: Variable naming issue bartc <bc@freeuk.com> - 2017-05-08 10:35 +0100
            Re: Variable naming issue bartc <bc@freeuk.com> - 2017-05-08 10:53 +0100
              Re: Variable naming issue David Kleinecke <dkleinecke@gmail.com> - 2017-05-08 11:47 -0700
                Re: Variable naming issue bartc <bc@freeuk.com> - 2017-05-08 19:59 +0100
      Re: Variable naming issue gazelle@shell.xmission.com (Kenny McCormack) - 2017-04-25 10:43 +0000
    Re: Variable naming issue Robert Wessel <robertwessel2@yahoo.com> - 2017-04-25 09:33 -0500
  Re: Variable naming issue Keith Thompson <kst-u@mib.org> - 2017-04-24 17:26 -0700
    Re: Variable naming issue maximus fl <ajones2600@gmail.com> - 2017-04-24 18:18 -0700
  Re: Variable naming issue scott@slp53.sl.home (Scott Lurndal) - 2017-04-25 14:48 +0000

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