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Groups > comp.lang.c > #53816

Re: "lvalue"

From James Kuyper <jameskuyper@verizon.net>
Newsgroups comp.lang.c
Subject Re: "lvalue"
Date 2014-12-03 15:29 -0500
Organization Self
Message-ID <547F72A6.8030502@verizon.net> (permalink)
References <lvalue-20141203103107@ram.dialup.fu-berlin.de> <m5nhhr$qda$1@dont-email.me> <m5nkqb$6qk$1@speranza.aioe.org> <m5nml1$gho$1@dont-email.me>

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On 12/03/2014 02:01 PM, buja wrote:
> On 12/03/2014 07:29 PM, jacob navia wrote:
>> Le 03/12/2014 18:34, buja a écrit :
>>> "An object is a named region of storage; an lvalue is an expression
>>> referring to an object."
>>
>> What a wonderful sentence. Simple, it explains everything.
>>
> 
> My point exactly.
> I know that K&R is not the current standard, but its description is just 
> so much clearer than what the current standard has to say about this 
> subject.
> And I am sure both K&R and the current standard intend to say exactly 
> the same thing.

Those two statements cannot both be true. The current standard is
intended to identify *p as an lvalue, even if p has a null or
indeterminate value, in which case *p does NOT refer to an object. C90's
wording agrees with K&R's, and neither one clearly identifies *p as an
lvalue when p is null or indeterminate.
Therefore, either the intent was not the same, or the old wording fails
to clearly specify that intent. Which option do you favor?

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Re: "lvalue" buja <buja66@gmail.com> - 2014-12-03 18:34 +0100
  Re: "lvalue" James Kuyper <jameskuyper@verizon.net> - 2014-12-03 13:03 -0500
  Re: "lvalue" jacob navia <jacob@spamsink.net> - 2014-12-03 19:29 +0100
    Re: "lvalue" buja <buja66@gmail.com> - 2014-12-03 20:01 +0100
      Re: "lvalue" Keith Thompson <kst-u@mib.org> - 2014-12-03 12:18 -0800
      Re: "lvalue" Geoff <geoff@invalid.invalid> - 2014-12-03 12:20 -0800
      Re: "lvalue" James Kuyper <jameskuyper@verizon.net> - 2014-12-03 15:29 -0500
        Re: "lvalue" James Kuyper <jameskuyper@verizon.net> - 2014-12-03 21:48 -0500
          Re: "lvalue" Keith Thompson <kst-u@mib.org> - 2014-12-04 08:20 -0800
            Re: "lvalue" James Kuyper <jameskuyper@verizon.net> - 2014-12-04 11:44 -0500
              Re: "lvalue" Keith Thompson <kst-u@mib.org> - 2014-12-04 11:41 -0800
                Re: "lvalue" James Kuyper <jameskuyper@verizon.net> - 2014-12-04 14:50 -0500
        Re: "lvalue" Keith Thompson <kst-u@mib.org> - 2014-12-03 23:40 -0800
    Re: "lvalue" Tim Rentsch <txr@alumni.caltech.edu> - 2014-12-05 09:16 -0800

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