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Groups > comp.lang.c > #107047
| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Can a variable be both static and extern |
| Date | 2017-03-25 10:31 -0700 |
| Organization | None to speak of |
| Message-ID | <lna8898dq3.fsf@kst-u.example.com> (permalink) |
| References | (3 earlier) <ob3gvq$1mg$1@dont-email.me> <ob3i26$5fo$2@dont-email.me> <ob3o2p$rak$1@dont-email.me> <b0a05f7d-ba76-3ffd-7b45-0f53b9fd766b@verizon.net> <ob66rd$phv$1@dont-email.me> |
Richard Heathfield <rjh@cpax.org.uk> writes:
[...]
> ISO/IEC 9899 is such an Authority. Even where it lies, it tells the
> truth, and even where it is mistaken, it is correct until the
> application of a DR, whereupon it effortlessly changes its mind and is
> /still/ correct.
And what if the Authority contradicts itself?
For example, the term "expression" is defined both by the grammar:
expression:
assignment-expression
expression , assignment-expression
(with a bunch of rules recursively defining "assignment-expression"
et al) and by the definition in 6.5p1:
An *expression* is a sequence of operators and operands that
specifies computation of a value, or that designates an object
or a function, or that generates side effects, or that performs
a combination thereof.
The grammar clearly indicates that 42 is an expression. The English
definition indicates that it is not (it contains no operators and
therefore no operands). (And no, you can't reasonably invent a null
operator that has 42 as its operand; the normative definition of
"operator" in 6.4.6 doesn't permit that.)
The intent is clear enough (42 is an expression and the definition
in 6.5p1 is flawed), but we can't determine that without applying
common sense rules from outside the standard.
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
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Can a variable be both static and extern acidlategamer@gmail.com - 2017-03-24 04:23 -0700
Re: Can a variable be both static and extern Richard Heathfield <rjh@cpax.org.uk> - 2017-03-24 11:40 +0000
Re: Can a variable be both static and extern acidlategamer@gmail.com - 2017-03-24 04:54 -0700
Re: Can a variable be both static and extern Richard Heathfield <rjh@cpax.org.uk> - 2017-03-24 12:09 +0000
Re: Can a variable be both static and extern James Kuyper <jameskuyper@verizon.net> - 2017-03-24 11:45 -0400
Re: Can a variable be both static and extern raltbos@xs4all.nl (Richard Bos) - 2017-03-25 22:27 +0000
Re: Can a variable be both static and extern Keith Thompson <kst-u@mib.org> - 2017-03-24 11:35 -0700
Re: Can a variable be both static and extern Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-24 12:11 +0000
Re: Can a variable be both static and extern raltbos@xs4all.nl (Richard Bos) - 2017-03-24 12:14 +0000
Re: Can a variable be both static and extern David Brown <david.brown@hesbynett.no> - 2017-03-24 17:11 +0100
Re: Can a variable be both static and extern scott@slp53.sl.home (Scott Lurndal) - 2017-03-24 16:22 +0000
Re: Can a variable be both static and extern David Brown <david.brown@hesbynett.no> - 2017-03-24 17:38 +0100
Re: Can a variable be both static and extern James Kuyper <jameskuyper@verizon.net> - 2017-03-24 12:23 -0400
Re: Can a variable be both static and extern David Brown <david.brown@hesbynett.no> - 2017-03-24 17:41 +0100
Re: Can a variable be both static and extern jameskuyper@verizon.net - 2017-03-24 09:57 -0700
Re: Can a variable be both static and extern supercat@casperkitty.com - 2017-03-24 10:38 -0700
Re: Can a variable be both static and extern Richard Heathfield <rjh@cpax.org.uk> - 2017-03-24 18:24 +0000
Re: Can a variable be both static and extern "James R. Kuyper" <jameskuyper@verizon.net> - 2017-03-25 10:47 -0400
Re: Can a variable be both static and extern Richard Heathfield <rjh@cpax.org.uk> - 2017-03-25 16:48 +0000
Re: Can a variable be both static and extern Keith Thompson <kst-u@mib.org> - 2017-03-25 10:31 -0700
Re: Can a variable be both static and extern Richard Heathfield <rjh@cpax.org.uk> - 2017-03-25 18:23 +0000
Re: Can a variable be both static and extern supercat@casperkitty.com - 2017-03-25 12:28 -0700
Re: Can a variable be both static and extern Ike Naar <ike@iceland.freeshell.org> - 2017-03-25 19:50 +0000
Re: Can a variable be both static and extern supercat@casperkitty.com - 2017-03-25 13:20 -0700
Re: Can a variable be both static and extern jameskuyper@verizon.net - 2017-03-25 10:44 -0700
Re: Can a variable be both static and extern supercat@casperkitty.com - 2017-03-25 12:13 -0700
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