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Groups > comp.lang.c > #129736
| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: gcc_centric C code |
| Date | 2018-04-25 10:54 -0700 |
| Organization | None to speak of |
| Message-ID | <lnpo2ngojj.fsf@kst-u.example.com> (permalink) |
| References | <I11EC.8185$oo.4543@fx35.am4> <87tvrzpa32.fsf@bsb.me.uk> <ess2mRa5zlV2ZGm8ZlNjs89DfacWi@bongo-ra.co> <29063935-b373-4307-be80-78a64134d0e7@googlegroups.com> <hve1ed93b184siupcu3cq1sgp8b37tg3fb@4ax.com> |
Robert Wessel <robertwessel2@yahoo.com> writes:
> On Wed, 25 Apr 2018 10:30:03 -0700 (PDT), supercat@casperkitty.com
> wrote:
>>On Wednesday, April 25, 2018 at 11:19:27 AM UTC-5, Spiros Bousbouras wrote:
>>> Yes and I use it all the time for error messages. But it's not a macro ,
>>> it's an identifier :
>>>
>>> 6.4.2.2 Predefined identifiers
>>> Semantics
>>>
>>> 1 The identifier __func__ shall be implicitly declared by the
>>> translator as if, immediately following the opening brace of each
>>> function definition, the declaration
>>> static const char __func__[] = "function-name";
>>> appeared, where function-name is the name of the lexically-enclosing
>>> function.61)
>>>
>>> 2 This name is encoded as if the implicit declaration had been written
>>> in the source character set and then translated into the execution
>>> character set as indicated in translation phase 5.
>>
>>I wonder if there's any particular advantage to doing that, versus saying
>>having it be a token which behaves like a string literal? Being able to
>>combine the other built-ins that yield strings, e.g.
>>
>> const char build_info[] = "Version 1.3 " __DATE__ " " __TIME__;
>>
>>is certainly useful, and I see no reason that giving __func__ such
>>abilities would not be similarly useful.
>>
>>Would having __func__ be a token that behaves like a quoted string literal
>>cause any "translation phase" issue?
>
> Yes, expanding those macros and the concatenation of adjacent string
> literals happens long before the boundaries of functions are
> determined.
A very minor point: values yielded by __func__ can be compared for
pointer equality. (I've never seen code that relies on this.)
--
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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gcc_centric C code bartc <bc@freeuk.com> - 2018-04-25 16:21 +0100
gcc_centric C code Chad <cdalten@gmail.com> - 2018-04-25 08:34 -0700
Re: gcc_centric C code Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-04-25 16:41 +0100
Re: gcc_centric C code Spiros Bousbouras <spibou@gmail.com> - 2018-04-25 16:19 +0000
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-25 18:02 +0100
Re: gcc_centric C code Nick Bowler <nbowler@draconx.ca> - 2018-04-25 17:15 +0000
Re: gcc_centric C code Robert Wessel <robertwessel2@yahoo.com> - 2018-04-25 12:33 -0500
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-25 20:51 +0100
Re: gcc_centric C code supercat@casperkitty.com - 2018-04-25 13:01 -0700
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-25 21:21 +0100
Re: gcc_centric C code jameskuyper@verizon.net - 2018-04-25 13:45 -0700
Re: gcc_centric C code Spiros Bousbouras <spibou@gmail.com> - 2018-04-25 17:20 +0000
Re: gcc_centric C code supercat@casperkitty.com - 2018-04-25 10:30 -0700
Re: gcc_centric C code Robert Wessel <robertwessel2@yahoo.com> - 2018-04-25 12:35 -0500
Re: gcc_centric C code Keith Thompson <kst-u@mib.org> - 2018-04-25 10:54 -0700
Re: gcc_centric C code Philipp Klaus Krause <pkk@spth.de> - 2018-04-25 20:27 +0200
Re: gcc_centric C code Keith Thompson <kst-u@mib.org> - 2018-04-25 12:38 -0700
Re: gcc_centric C code Robert Wessel <robertwessel2@yahoo.com> - 2018-04-25 19:53 -0500
Re: gcc_centric C code Keith Thompson <kst-u@mib.org> - 2018-04-25 18:13 -0700
Re: gcc_centric C code Nick Bowler <nbowler@draconx.ca> - 2018-04-26 15:16 +0000
Re: gcc_centric C code Tim Rentsch <txr@alumni.caltech.edu> - 2018-04-27 08:17 -0700
Re: gcc_centric C code Philipp Klaus Krause <pkk@spth.de> - 2018-04-26 08:03 +0200
Re: gcc_centric C code Nick Bowler <nbowler@draconx.ca> - 2018-04-26 14:30 +0000
Re: gcc_centric C code jameskuyper@verizon.net - 2018-04-26 08:26 -0700
Re: gcc_centric C code Philipp Klaus Krause <pkk@spth.de> - 2018-04-26 19:04 +0200
Re: gcc_centric C code Ian Collins <ian-news@hotmail.com> - 2018-04-27 07:48 +1200
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 21:08 +0100
Re: gcc_centric C code Ian Collins <ian-news@hotmail.com> - 2018-04-27 08:18 +1200
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 21:44 +0100
Re: gcc_centric C code Ian Collins <ian-news@hotmail.com> - 2018-04-27 09:01 +1200
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 23:16 +0100
Re: gcc_centric C code Ian Collins <ian-news@hotmail.com> - 2018-04-27 10:27 +1200
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 23:48 +0100
Re: gcc_centric C code Ian Collins <ian-news@hotmail.com> - 2018-04-27 20:41 +1200
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-27 11:51 +0100
Re: gcc_centric C code Ian Collins <ian-news@hotmail.com> - 2018-04-28 07:32 +1200
Re: gcc_centric C code Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-28 04:34 -0700
Re: gcc_centric C code Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-26 23:05 -0700
Re: gcc_centric C code jacobnavia <jacob@jacob.remcomp.fr> - 2018-04-27 00:52 +0200
Re: gcc_centric C code supercat@casperkitty.com - 2018-04-26 16:23 -0700
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-28 11:24 +0100
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-28 01:42 +0100
Re: gcc_centric C code Dan Purgert <dan@djph.net> - 2018-04-26 21:40 +0000
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 23:34 +0100
Re: gcc_centric C code "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-04-26 14:13 -0700
Re: gcc_centric C code "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-04-26 14:16 -0700
Re: gcc_centric C code Tim Rentsch <txr@alumni.caltech.edu> - 2018-04-27 08:08 -0700
Re: gcc_centric C code Keith Thompson <kst-u@mib.org> - 2018-04-27 09:11 -0700
Re: gcc_centric C code supercat@casperkitty.com - 2018-04-27 09:26 -0700
Re: gcc_centric C code Tim Rentsch <txr@alumni.caltech.edu> - 2018-04-27 09:49 -0700
Re: gcc_centric C code supercat@casperkitty.com - 2018-04-25 12:31 -0700
Re: gcc_centric C code Nick Bowler <nbowler@draconx.ca> - 2018-04-25 20:13 +0000
Re: gcc_centric C code supercat@casperkitty.com - 2018-04-25 13:50 -0700
Re: gcc_centric C code Nick Bowler <nbowler@draconx.ca> - 2018-04-25 18:02 +0000
Re: gcc_centric C code Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-25 22:39 -0700
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-25 18:36 +0100
Re: gcc_centric C code Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-04-25 23:15 +0100
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 02:02 +0100
Re: gcc_centric C code Keith Thompson <kst-u@mib.org> - 2018-04-25 18:28 -0700
Re: gcc_centric C code Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-04-26 11:45 +0100
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 14:53 +0100
Re: gcc_centric C code Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-04-26 23:38 +0100
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-27 00:31 +0100
Re: gcc_centric C code Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-04-27 00:47 +0100
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-27 02:28 +0100
Re: gcc_centric C code Thiago Adams <thiago.adams@gmail.com> - 2018-04-27 03:44 -0700
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-05-03 13:57 +0100
Re: gcc_centric C code Thiago Adams <thiago.adams@gmail.com> - 2018-05-03 11:02 -0700
Re: gcc_centric C code Thiago Adams <thiago.adams@gmail.com> - 2018-05-03 11:07 -0700
Re: gcc_centric C code Steven Petruzzellis <frelwizzen@gmail.com> - 2018-05-03 11:13 -0700
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-05-03 19:50 +0100
Re: gcc_centric C code Thiago Adams <thiago.adams@gmail.com> - 2018-05-03 13:37 -0700
Re: gcc_centric C code Thiago Adams <thiago.adams@gmail.com> - 2018-05-03 13:44 -0700
Re: gcc_centric C code Thiago Adams <thiago.adams@gmail.com> - 2018-05-11 10:25 -0700
Re: gcc_centric C code Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-26 07:01 -0700
Re: Clearly everyone else likes to do things the hard way Noob <root@127.0.0.1> - 2018-04-26 14:51 +0200
Re: Clearly everyone else likes to do things the hard way mark.bluemel@gmail.com - 2018-04-26 07:09 -0700
Re: Clearly everyone else likes to do things the hard way gazelle@shell.xmission.com (Kenny McCormack) - 2018-04-26 17:05 +0000
Re: Clearly everyone else likes to do things the hard way bartc <bc@freeuk.com> - 2018-04-26 18:38 +0100
Re: Clearly everyone else likes to do things the hard way 1alvinalbrecht1@gmail.com - 2018-04-26 11:34 -0700
Re: Clearly everyone else likes to do things the hard way bartc <bc@freeuk.com> - 2018-04-26 21:36 +0100
Re: Clearly everyone else likes to do things the hard way C W Rose <cwr@seckford.org> - 2018-04-27 19:23 +0100
Re: Clearly everyone else likes to do things the hard way bartc <bc@freeuk.com> - 2018-04-28 14:34 +0100
Re: Clearly everyone else likes to do things the hard way Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-28 10:32 -0700
Re: Clearly everyone else likes to do things the hard way supercat@casperkitty.com - 2018-04-30 10:16 -0700
Re: Clearly everyone else likes to do things the hard way bartc <bc@freeuk.com> - 2018-04-30 19:41 +0100
Re: Clearly everyone else likes to do things the hard way supercat@casperkitty.com - 2018-04-30 12:11 -0700
Re: Clearly everyone else likes to do things the hard way scott@slp53.sl.home (Scott Lurndal) - 2018-04-30 19:14 +0000
Re: Clearly everyone else likes to do things the hard way scott@slp53.sl.home (Scott Lurndal) - 2018-04-30 19:12 +0000
Re: Clearly everyone else likes to do things the hard way bartc <bc@freeuk.com> - 2018-04-30 21:19 +0100
Re: Clearly everyone else likes to do things the hard way Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-30 19:23 -0700
Re: Clearly everyone else likes to do things the hard way Philipp Klaus Krause <pkk@spth.de> - 2018-04-26 19:45 +0200
Re: gcc_centric C code luser droog <luser.droog@gmail.com> - 2018-04-25 21:56 -0700
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 11:06 +0100
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 11:27 +0100
Re: gcc_centric C code antispam@math.uni.wroc.pl - 2018-04-26 17:00 +0000
Re: gcc_centric C code Thiago Adams <thiago.adams@gmail.com> - 2018-04-25 09:26 -0700
Re: gcc_centric C code Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-04-26 12:39 +0000
Re: gcc_centric C code gazelle@shell.xmission.com (Kenny McCormack) - 2018-04-26 13:09 +0000
Re: gcc_centric C code Wouter Verhelst <w@uter.be> - 2018-04-26 13:26 +0200
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-26 18:03 +0100
Re: gcc_centric C code Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-26 14:32 -0700
Re: gcc_centric C code Tim Rentsch <txr@alumni.caltech.edu> - 2018-04-27 09:41 -0700
Re: gcc_centric C code bartc <bc@freeuk.com> - 2018-04-27 19:37 +0100
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