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| From | 88888 Dihedral <dihedral88888@googlemail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: When did K&R function declarations become obsolete? |
| Date | 2011-12-12 03:49 -0800 |
| Organization | http://groups.google.com |
| Message-ID | <18177230.30.1323690564115.JavaMail.geo-discussion-forums@prfb7> (permalink) |
| References | <jc082n$27s4$1@colin.muc.de> <9ki0i9F3ibU1@mid.uni-berlin.de> <jc4oi5$274$1@colin.muc.de> |
On Monday, December 12, 2011 7:29:09 PM UTC+8, Alan Mackenzie wrote: > Jens Thoms Toerring <j...@toerring.de> wrote: > > Alan Mackenzie <a...@muc.de> wrote: > >> I think we can say that K&R function declarations are truly obsolete. In > >> ~20 years of hacking C, I've only seen very old code which uses them. > > >> Presumably these declarations are still widely used in compiler validation > >> suites but nowhere else. > > >> Approximately when did they become obsolete, i.e. not used at all for new > >> code? > > > When I started using C in 1989 they were still quite common to be > > seen in code I was looking at but that dropped significantly during > > the following decade and I hardly ever have seen code using them > > written in this millenium. So my very personal guess is that most > > people use the "new" form since at least about 1995. But then I did > > programming nearly exclussively under UNIX, things might be diffe- > > rent for platforms where "modern" compilers weren't available that > > easily. And, of course, people having to cater for the very smal- > > lest common denominator (i.e. systems were no C89 compliant com- > > piler exists) still have to use them in one form or another (as > > the example Kaz came up with might be an example for). > > I think 1995 sounds about right. > > > If this is for the emacs C mode then, since the standard still > > requires support for the "old way" (even though it might be de- > > clared as obsolete) I would think it prudent not to throw it > > out completely. > > Don't worry, there's no chance of that. :-) It's just that there is a > new option to disable K&R header parsing - this parsing can be > inordinately slow, for example when there are long sequences of variable > declarations (which might be K&R parameter specifications). It's a shame > to impose this performance penalty on everybody, just because of some > obsolete construct which "nobody" uses any more. > > > Regards, Jens > > -- > Alan Mackenzie (Nuremberg, Germany). In a standard C compiler, a line can be very very long and the number of arguments allowed in a C function is nearly free style. OK, this is a good environment for those who want to write obfuscated programs easily.
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When did K&R function declarations become obsolete? Alan Mackenzie <acm@muc.de> - 2011-12-10 18:23 +0000
Re: When did K&R function declarations become obsolete? Kaz Kylheku <kaz@kylheku.com> - 2011-12-10 18:41 +0000
Re: When did K&R function declarations become obsolete? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-10 10:40 -0800
Re: When did K&R function declarations become obsolete? Ian Collins <ian-news@hotmail.com> - 2011-12-11 07:49 +1300
Re: When did K&R function declarations become obsolete? Ben Pfaff <blp@cs.stanford.edu> - 2011-12-10 10:49 -0800
Re: When did K&R function declarations become obsolete? jt@toerring.de (Jens Thoms Toerring) - 2011-12-10 21:16 +0000
Re: When did K&R function declarations become obsolete? Alan Mackenzie <acm@muc.de> - 2011-12-12 11:29 +0000
Re: When did K&R function declarations become obsolete? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-12 03:49 -0800
Re: When did K&R function declarations become obsolete? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-12-12 15:04 +0000
Re: When did K&R function declarations become obsolete? Alan Mackenzie <acm@muc.de> - 2011-12-13 10:42 +0000
Re: When did K&R function declarations become obsolete? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-12-13 13:58 +0000
Re: When did K&R function declarations become obsolete? "Scott Fluhrer" <sfluhrer@ix.netcom.com> - 2011-12-13 10:17 -0500
Re: When did K&R function declarations become obsolete? ralph <nt_consulting64@yahoo.net> - 2011-12-13 12:04 -0600
Re: When did K&R function declarations become obsolete? Kaz Kylheku <kaz@kylheku.com> - 2011-12-13 18:17 +0000
Re: When did K&R function declarations become obsolete? ralph <nt_consulting64@yahoo.net> - 2011-12-13 15:17 -0600
Re: When did K&R function declarations become obsolete? Kaz Kylheku <kaz@kylheku.com> - 2011-12-13 21:46 +0000
Re: When did K&R function declarations become obsolete? Seebs <usenet-nospam@seebs.net> - 2011-12-13 22:04 +0000
Re: When did K&R function declarations become obsolete? jgk@panix.com (Joe keane) - 2011-12-13 23:07 +0000
Re: When did K&R function declarations become obsolete? Seebs <usenet-nospam@seebs.net> - 2011-12-13 23:23 +0000
Re: When did K&R function declarations become obsolete? Kaz Kylheku <kaz@kylheku.com> - 2011-12-14 00:26 +0000
Re: When did K&R function declarations become obsolete? blp@cs.stanford.edu (Ben Pfaff) - 2011-12-13 15:22 -0800
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-13 15:27 -0800
Re: When did K&R function declarations become obsolete? Alan Mackenzie <acm@muc.de> - 2011-12-14 09:33 +0000
Re: When did K&R function declarations become obsolete? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-12-13 19:49 +0000
Re: When did K&R function declarations become obsolete? "Scott Fluhrer" <sfluhrer@ix.netcom.com> - 2011-12-13 14:54 -0500
Re: When did K&R function declarations become obsolete? luser- -droog <mijoryx@yahoo.com> - 2011-12-20 02:28 -0800
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-10 13:48 -0800
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-10 21:48 -0800
Re: When did K&R function declarations become obsolete? Ralph Spitzner <rasp@spitzner.org> - 2011-12-11 04:16 +0100
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-10 21:54 -0800
Re: When did K&R function declarations become obsolete? ralph <nt_consulting64@yahoo.net> - 2011-12-10 22:27 -0600
Re: When did K&R function declarations become obsolete? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-12-11 12:56 +0000
Re: When did K&R function declarations become obsolete? Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-12-11 09:11 -0500
Re: When did K&R function declarations become obsolete? ralph <nt_consulting64@yahoo.net> - 2011-12-11 21:40 -0600
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-12 00:05 -0800
Re: When did K&R function declarations become obsolete? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-12-12 15:00 +0000
Re: When did K&R function declarations become obsolete? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-12 07:18 -0800
Re: When did K&R function declarations become obsolete? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-12-13 00:55 -0800
Re: When did K&R function declarations become obsolete? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-13 07:50 -0800
Re: When did K&R function declarations become obsolete? ralph <nt_consulting64@yahoo.net> - 2011-12-12 11:15 -0600
Re: When did K&R function declarations become obsolete? ralph <nt_consulting64@yahoo.net> - 2011-12-12 11:17 -0600
Re: When did K&R function declarations become obsolete? jgk@panix.com (Joe keane) - 2011-12-12 21:57 +0000
Re: When did K&R function declarations become obsolete? Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-12-12 18:15 -0500
Re: When did K&R function declarations become obsolete? ralph <nt_consulting64@yahoo.net> - 2011-12-11 15:10 -0600
Re: When did K&R function declarations become obsolete? James Kuyper <jameskuyper@verizon.net> - 2011-12-11 09:17 -0500
Re: When did K&R function declarations become obsolete? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-11 06:53 -0800
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-12 00:08 -0800
Re: When did K&R function declarations become obsolete? Alan Mackenzie <acm@muc.de> - 2011-12-12 11:59 +0000
Re: When did K&R function declarations become obsolete? James Kuyper <jameskuyper@verizon.net> - 2011-12-12 07:47 -0500
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-12 11:59 -0800
Re: When did K&R function declarations become obsolete? Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-12-12 18:17 -0500
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-12 15:43 -0800
Re: When did K&R function declarations become obsolete? André Gillibert <MetaEntropy.removeThis@gmail.com> - 2011-12-12 13:49 +0100
Re: When did K&R function declarations become obsolete? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-12 05:25 -0800
Re: When did K&R function declarations become obsolete? André Gillibert <MetaEntropy.removeThis@gmail.com> - 2011-12-12 14:35 +0100
Re: When did K&R function declarations become obsolete? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-12-12 15:21 +0000
Re: When did K&R function declarations become obsolete? Jonathan Leffler <jleffler@earthlink.net> - 2011-12-13 22:19 -0800
Re: When did K&R function declarations become obsolete? Keith Thompson <kst-u@mib.org> - 2011-12-14 02:54 -0800
Re: When did K&R function declarations become obsolete? 88888 Dihedral <dihedral88888@googlemail.com> - 2011-12-14 13:17 -0800
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