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Groups > comp.lang.c > #104113 > unrolled thread

Is this valid C?

Started byBartC <bc@freeuk.com>
First post2017-02-18 00:43 +0000
Last post2017-02-25 13:13 -0800
Articles 20 on this page of 539 — 32 participants

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Contents

  Is this valid C? BartC <bc@freeuk.com> - 2017-02-18 00:43 +0000
    Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-18 02:41 +0000
      Re: Is this valid C? Philip Lantz <prl@canterey.us> - 2017-02-20 18:00 -0800
        Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-20 18:46 -0800
    Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-18 11:47 +0100
    Re: Is this valid C? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2017-02-18 10:08 -0800
    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-18 23:30 +0000
      Re: Is this valid C? jameskuyper@verizon.net - 2017-02-18 15:50 -0800
        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-19 00:53 +0000
      Re: Is this valid C? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2017-02-18 16:01 -0800
        Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-18 19:20 -0800
          Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-19 09:41 +0100
            Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-19 09:14 +0000
              Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-19 10:30 +0100
              Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-19 07:21 -0800
                Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-19 17:28 +0100
                  Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-19 11:53 -0500
                    Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-19 18:12 +0100
                      Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-19 13:10 -0500
                        Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-19 20:24 +0100
                          Re: Is this valid C? jameskuyper@verizon.net - 2017-02-19 11:51 -0800
                          Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-19 12:26 -0800
                            Getting yourself killfiled (Was: Is this valid C?) gazelle@shell.xmission.com (Kenny McCormack) - 2017-02-19 21:23 +0000
          Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-19 11:23 +0000
            Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-19 07:33 -0800
            Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-19 15:35 +0000
              Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-19 19:42 +0000
              Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-19 12:04 -0800
                Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-19 20:51 +0000
                  Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-19 22:23 +0000
                    Re: Is this valid C? jameskuyper@verizon.net - 2017-02-19 14:48 -0800
                      Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 00:36 +0000
                        Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-20 09:58 +0100
                        Re: Is this valid C? jameskuyper@verizon.net - 2017-02-20 09:14 -0800
                          Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-20 12:17 -0500
                    Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-19 23:16 +0000
                      Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 00:24 +0000
                        Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-20 00:56 +0000
                          Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 01:25 +0000
                            Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 11:14 +0000
                              Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-20 14:44 +0000
                                Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 15:18 +0000
                                  Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-20 15:51 +0000
                                    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 16:16 +0000
                        Re: Is this valid C? antispam@math.uni.wroc.pl - 2017-02-23 12:23 +0000
                    Re: Is this valid C? supercat@casperkitty.com - 2017-02-19 15:49 -0800
                      Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 00:55 +0000
                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-20 10:05 +0100
                        Re: Is this valid C? supercat@casperkitty.com - 2017-02-20 07:08 -0800
                          Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-20 16:23 +0100
                          Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-20 16:03 +0000
                            Re: Is this valid C? supercat@casperkitty.com - 2017-02-20 08:45 -0800
                              Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-20 09:17 -0800
                                Re: Is this valid C? supercat@casperkitty.com - 2017-02-20 12:25 -0800
                                  Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-20 12:29 -0800
                                    Re: Is this valid C? supercat@casperkitty.com - 2017-02-20 13:20 -0800
                                      Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-20 13:50 -0800
                                        Re: Is this valid C? supercat@casperkitty.com - 2017-02-20 14:08 -0800
                                          Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-20 15:16 -0800
                                            Re: Is this valid C? supercat@casperkitty.com - 2017-02-20 16:19 -0800
                                              Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-21 09:28 +0100
                                                Re: Is this valid C? supercat@casperkitty.com - 2017-02-21 09:19 -0800
                                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-21 19:21 +0100
                                                    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-21 19:21 +0000
                                                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-21 21:34 +0100
                                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-21 21:31 +0000
                                                          Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-22 10:09 +0100
                                                            Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-22 10:43 +0100
                                                            Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-22 12:43 +0000
                                                              Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-22 15:07 +0000
                                                                Re: Is this valid C? supercat@casperkitty.com - 2017-02-22 09:26 -0800
                                                              Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-22 16:28 +0100
                                                                Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-22 17:18 +0000
                                                                  Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-22 09:22 -0800
                                                                    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-22 19:20 +0000
                                                                      Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-22 11:34 -0800
                                                                      Re: Is this valid C? supercat@casperkitty.com - 2017-02-22 11:49 -0800
                                                                  Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-22 20:11 +0000
                                                                    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-22 21:45 +0000
                                                                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-22 23:13 +0100
                                                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-22 23:45 +0000
                                                                          Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-23 10:35 +0100
                                                                        Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-23 01:10 +0100
                                                                          Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 00:35 +0000
                                                                            Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-22 16:42 -0800
                                                                            Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-23 11:06 +0100
                                                                              Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 11:07 +0000
                                                                          Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-23 10:49 +0100
                                                                            Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 12:18 +0000
                                                                              Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-23 17:30 +0100
                                                                          Re: Is this valid C? Gareth Owen <gwowen@gmail.com> - 2017-02-23 18:48 +0000
                                                                      Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-23 01:52 +0000
                                                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 11:37 +0000
                                                                          Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-23 15:11 +0000
                                                                            Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-23 07:36 -0800
                                                                              Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-23 16:49 +0000
                                                                                Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-23 09:04 -0800
                                                                                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-23 17:09 +0000
                                                                            Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 16:14 +0000
                                                                            Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-23 16:51 +0000
                                                                              Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-23 17:39 +0000
                                                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-22 22:57 +0100
                                                                    Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-22 15:31 -0800
                                                                      Re: Is this valid C? supercat@casperkitty.com - 2017-02-22 15:46 -0800
                                                                      Re: Is this valid C? Robert Wessel <robertwessel2@yahoo.com> - 2017-02-22 18:35 -0600
                                                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 00:46 +0000
                                                                          Re: Is this valid C? Robert Wessel <robertwessel2@yahoo.com> - 2017-02-22 22:39 -0600
                                                                            Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 10:57 +0000
                                                                          Re: Is this valid C? antispam@math.uni.wroc.pl - 2017-02-24 17:57 +0000
                                                                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-23 11:17 +0100
                                                              Re: Is this valid C? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-02-23 19:03 +0000
                                                                Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 20:11 +0000
                                                                  Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-23 20:36 +0000
                                                                    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 21:20 +0000
                                                                      Re: Is this valid C? antispam@math.uni.wroc.pl - 2017-02-24 18:28 +0000
                                                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 18:45 +0000
                                                                          Re: Is this valid C? antispam@math.uni.wroc.pl - 2017-02-24 19:53 +0000
                                                                            Re: Is this valid C? supercat@casperkitty.com - 2017-02-24 12:06 -0800
                                                                            Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 20:38 +0000
                                                                              Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-25 10:11 +1300
                                                                                Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-25 10:15 +1300
                                                                                Re: Is this valid C? supercat@casperkitty.com - 2017-02-24 15:02 -0800
                                                                                  Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-25 12:10 +1300
                                                                                  Re: Is this valid C? Gareth Owen <gwowen@gmail.com> - 2017-02-25 10:33 +0000
                                                                                    Re: Is this valid C? supercat@casperkitty.com - 2017-02-25 13:25 -0800
                                                                              Re: Is this valid C? antispam@math.uni.wroc.pl - 2017-02-24 21:27 +0000
                                                                                Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 22:00 +0000
                                                                                  Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-28 20:17 +0000
                                                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-25 01:22 +0000
                                                                          Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-24 17:40 -0800
                                                                            Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-25 11:06 +0000
                                                                              Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-25 12:43 -0800
                                                                                Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-25 21:32 +0000
                                                                                  Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-26 10:39 +1300
                                                                                    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-25 21:53 +0000
                                                                                      Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-26 11:07 +1300
                                                                                      Re: Is this valid C? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-02-25 19:19 -0700
                                                                                        Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-26 17:12 +1300
                                                                                  Re: Is this valid C? antispam@math.uni.wroc.pl - 2017-02-26 00:13 +0000
                                                                  Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-24 00:56 +0100
                                                                    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 01:19 +0000
                                                                      Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-24 03:18 +0100
                                                                      Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-24 14:03 +0000
                                                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 14:28 +0000
                                                                          Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-24 16:20 +0100
                                                                            Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-24 07:49 -0800
                                                                              Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-24 17:03 +0100
                                                                              Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-24 16:19 +0000
                                                                                Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-24 09:50 -0800
                                                                                  Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-24 18:48 +0000
                                                                              Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-24 17:25 +0100
                                                                                Re: Is this valid C? Gareth Owen <gwowen@gmail.com> - 2017-02-24 16:40 +0000
                                                                                Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-24 16:50 +0000
                                                                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-25 19:52 +0100
                                                                                  Re: Is this valid C? Jean-Marc Bourguet <jm@bourguet.org> - 2017-02-26 09:17 +0100
                                                                                Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 17:44 +0000
                                                                                  Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 18:07 +0000
                                                                                    Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-24 18:45 +0000
                                                                                      Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-24 19:56 +0000
                                                                                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-25 19:58 +0100
                                                                                Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-24 10:01 -0800
                                                                                  Re: Is this valid C? luser droog <luser.droog@gmail.com> - 2017-02-24 14:28 -0800
                                                                          Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-24 16:08 +0000
                                                                      Re: Is this valid C? antispam@math.uni.wroc.pl - 2017-02-24 18:18 +0000
                                                                  Re: Is this valid C? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-02-25 15:37 +0000
                                                  Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-21 10:56 -0800
                                              Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-02-27 05:18 -0600
                                                Re: Is this valid C? supercat@casperkitty.com - 2017-02-27 08:46 -0800
                                                  Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-02-27 11:26 -0600
                                                    Re: Is this valid C? supercat@casperkitty.com - 2017-02-27 13:57 -0800
                                                      Re: Is this valid C? supercat@casperkitty.com - 2017-02-27 14:06 -0800
                                                      Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-02-28 04:25 -0600
                                                        Re: Is this valid C? supercat@casperkitty.com - 2017-02-28 15:45 -0800
                                                          Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-01 03:46 -0600
                                                            Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 06:30 -0800
                                                              Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-01 16:31 +0100
                                                                Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 08:37 -0800
                                                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-01 19:02 +0100
                                                                    Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 10:49 -0800
                                                                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-01 21:00 +0100
                                                                        Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 14:02 -0800
                                                                      Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-03-01 12:28 -0800
                                                                    Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 12:17 -0800
                                                                    Re: Is this valid C? supercat@casperkitty.com - 2017-03-07 14:53 -0800
                                                              Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-03-01 09:10 -0800
                                                                Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 09:51 -0800
                                                                Re: Is this valid C? Nathan Wagner <nw@hydaspes.if.org> - 2017-03-02 19:44 +0000
                                                                  Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-03-02 12:05 -0800
                                                              Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-02 04:19 -0600
                                                                Re: Is this valid C? supercat@casperkitty.com - 2017-03-02 06:06 -0800
                                                                  Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-02 10:16 -0600
                                                                    Re: Is this valid C? supercat@casperkitty.com - 2017-03-02 15:32 -0800
                                                                      Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-03 04:20 -0600
                                                                        Re: Is this valid C? supercat@casperkitty.com - 2017-03-03 05:19 -0800
                                                                        Re: Is this valid C? supercat@casperkitty.com - 2017-03-03 08:22 -0800
                                                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-02 19:34 +0100
                                                                Re: Is this valid C? supercat@casperkitty.com - 2017-03-02 08:02 -0800
                                                                  Re: Is this valid C? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-02 10:54 -0600
                                                                    Re: Is this valid C? supercat@casperkitty.com - 2017-03-02 16:35 -0800
                                                                    Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-16 18:30 -0700
                                                            Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 07:52 -0800
                                      Re: Is this valid C? jameskuyper@verizon.net - 2017-02-20 13:53 -0800
                                  Re: Is this valid C? jameskuyper@verizon.net - 2017-02-20 12:58 -0800
                                  Re: Is this valid C? Robert Wessel <robertwessel2@yahoo.com> - 2017-02-20 17:28 -0600
                                    Re: Is this valid C? supercat@casperkitty.com - 2017-02-20 16:03 -0800
                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-21 09:14 +0100
                      Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-23 05:10 -0800
                        Re: Is this valid C? supercat@casperkitty.com - 2017-02-23 07:43 -0800
                          Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-26 07:07 -0800
                            Re: Is this valid C? supercat@casperkitty.com - 2017-02-26 09:17 -0800
                        Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-23 08:17 -0800
                        Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-23 09:11 -0800
                          Re: Is this valid C? supercat@casperkitty.com - 2017-02-23 09:46 -0800
                            Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-23 09:55 -0800
                              Re: Is this valid C? supercat@casperkitty.com - 2017-02-23 10:27 -0800
                              Re: Is this valid C? Ike Naar <ike@iceland.freeshell.org> - 2017-02-23 20:32 +0000
                                Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-23 12:54 -0800
                          Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-26 10:06 -0800
                            Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-26 13:13 -0800
                              Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-17 11:56 -0700
                                Re: Is this valid C? supercat@casperkitty.com - 2017-04-17 12:32 -0700
                            Re: Is this valid C? supercat@casperkitty.com - 2017-02-26 14:36 -0800
                              Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-30 08:30 -0700
                                Re: Is this valid C? supercat@casperkitty.com - 2017-05-01 09:34 -0700
                  Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-19 15:54 -0800
                Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-23 13:02 -0800
                  Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-23 14:53 -0800
                    Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-25 18:33 -0800
            Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-19 10:58 -0800
      Re: Is this valid C? Ike Naar <ike@iceland.freeshell.org> - 2017-02-19 09:06 +0000
        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-19 10:53 +0000
        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-19 09:06 -0500
          Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-19 16:25 +0000
            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-19 11:42 -0500
              Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-19 17:45 +0000
                Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-23 11:57 -0800
                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-23 21:27 +0000
                    Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-25 05:03 -0800
                  Re: Is this valid C? supercat@casperkitty.com - 2017-02-23 13:39 -0800
                    Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-25 17:42 -0800
                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-23 16:41 -0500
                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-24 10:04 +0000
                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 08:43 -0500
                      Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-24 14:53 +0000
                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 12:57 -0500
                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-24 20:04 +0000
                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 15:35 -0500
                          Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 12:37 -0800
                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 16:18 -0500
                              Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 15:21 -0800
                                Re: Is this valid C? supercat@casperkitty.com - 2017-02-24 16:09 -0800
                                  Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 17:45 -0800
                                    Re: Is this valid C? supercat@casperkitty.com - 2017-02-25 14:44 -0800
                                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 20:08 -0500
                                  Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-25 14:15 +1300
                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 21:48 -0500
                                    Re: Is this valid C? Gareth Owen <gwowen@gmail.com> - 2017-02-25 10:35 +0000
                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-25 09:12 -0500
                                        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-25 14:24 +0000
                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-25 15:59 -0500
                                  Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 18:03 -0800
                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 21:50 -0500
                                      Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 19:04 -0800
                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 23:20 -0500
                              Re: Is this valid C? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-02-25 21:26 -0700
                                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-26 10:09 -0500
                                  Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-26 17:41 +0000
                                    Re: Is this valid C? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2017-02-26 12:56 -0500
                                      Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 00:23 +0000
                                    Re: Is this valid C? Jean-Marc Bourguet <jm@bourguet.org> - 2017-02-26 19:02 +0100
                                      Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-26 13:49 -0500
                                        Re: Is this valid C? Jean-Marc Bourguet <jm@bourguet.org> - 2017-02-26 19:55 +0100
                                      Re: Is this valid C? supercat@casperkitty.com - 2017-02-26 12:05 -0800
                                      Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 00:52 +0000
                                        Re: Is this valid C? James Kuyper <jameskuyper@verizon.net> - 2017-02-26 22:01 -0500
                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 10:42 -0500
                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 08:51 -0500
                                          Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-27 13:59 +0000
                                            Re: Is this valid C? Ike Naar <ike@iceland.freeshell.org> - 2017-02-27 15:36 +0000
                                              Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-27 10:01 -0800
                                                Re: Is this valid C? Ike Naar <ike@iceland.freeshell.org> - 2017-02-27 18:57 +0000
                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 10:47 -0500
                                              Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 16:35 +0000
                                                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 15:14 -0500
                                                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 21:05 +0000
                                                    Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 21:26 +0000
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:12 -0500
                                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:12 -0500
                                                      Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 23:20 +0000
                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 18:45 -0500
                                                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 00:05 +0000
                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 19:48 -0500
                                                              Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 02:32 +0000
                                                                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 23:27 -0500
                                                                  Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-28 17:55 +1300
                                                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 12:23 -0500
                                                                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 05:09 +0000
                                                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 12:27 -0500
                                                                      Re: Is this valid C? jameskuyper@verizon.net - 2017-02-28 10:06 -0800
                                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 13:16 -0500
                                                                        Re: Is this valid C? James Kuyper <jameskuyper@verizon.net> - 2017-03-02 15:54 -0500
                                                                          Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-03 11:26 +0100
                                                                            Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-03 10:33 +0000
                                                                              Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-03 12:30 +0100
                                                                                Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-03 11:32 +0000
                                                                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-03 13:48 +0100
                                                                            Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-03 12:41 +0000
                                                                              Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-03 12:47 +0000
                                                                                Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-03 12:57 +0000
                                                                                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-03 13:12 +0000
                                                                              Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-03 13:57 +0100
                                                                              Re: Is this valid C? supercat@casperkitty.com - 2017-03-03 05:23 -0800
                                                                                Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-03 15:58 +0100
                                                                                  Re: Is this valid C? supercat@casperkitty.com - 2017-03-03 07:13 -0800
                                                                            Re: Is this valid C? James Kuyper <jameskuyper@verizon.net> - 2017-03-03 12:53 -0500
                                                                              Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-03 19:33 +0000
                                                                                Re: Is this valid C? James Kuyper <jameskuyper@verizon.net> - 2017-03-03 21:18 -0500
                                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-03 21:23 -0500
                                                                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-28 19:58 +0100
                                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:21 -0500
                                                                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 21:07 +0000
                                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:22 -0500
                                                                          Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-28 21:09 +0000
                                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:24 -0500
                                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:23 -0500
                                                                  Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-28 09:01 +0100
                                                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 12:30 -0500
                                                                      Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 18:05 +0000
                                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 13:27 -0500
                                                                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 19:01 +0000
                                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:26 -0500
                                                                              Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 21:13 +0000
                                                                                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:28 -0500
                                                                      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-28 20:12 +0100
                                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:38 -0500
                                                                          Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-28 20:46 +0000
                                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:29 -0500
                                                                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 21:15 +0000
                                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:30 -0500
                                                                          Re: Is this valid C? Jean-Marc Bourguet <jm@bourguet.org> - 2017-02-28 23:08 +0100
                                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:34 -0500
                                                                        Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-28 13:40 -0800
                                                                      Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-28 19:14 +0000
                                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:39 -0500
                                                                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 21:17 +0000
                                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:36 -0500
                                            Re: Is this valid C? scott@slp53.sl.home (Scott Lurndal) - 2017-02-27 17:19 +0000
                                              Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-27 17:52 +0000
                                                Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-27 19:20 +0100
                                    Re: Is this valid C? supercat@casperkitty.com - 2017-02-26 10:15 -0800
                                    Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-26 14:12 -0500
                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-26 15:50 -0500
                                    Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 00:50 +0000
                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-26 20:12 -0500
                                    Re: Is this valid C? Ralf Damaschke <rwspam@gmx.de> - 2017-02-27 16:59 +0000
                                      Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 19:35 +0000
                                        Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-27 12:12 -0800
              Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-23 11:36 -0800
                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-23 16:43 -0500
              Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 12:22 -0800
                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 15:39 -0500
                  Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 13:26 -0800
                    Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-24 18:53 -0500
                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 20:14 -0500
                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 20:13 -0500
                      Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 18:33 -0800
                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 21:58 -0500
                          Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 19:38 -0800
                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 23:21 -0500
                              Re: Is this valid C? jameskuyper@verizon.net - 2017-02-25 06:57 -0800
                                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-25 16:08 -0500
                  Re: Is this valid C? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2017-02-24 15:03 -0800
                    Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-25 12:12 +1300
                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 20:20 -0500
                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 20:19 -0500
          Re: Is this valid C? jameskuyper@verizon.net - 2017-02-19 08:42 -0800
            Re: Is this valid C? jameskuyper@verizon.net - 2017-02-19 08:58 -0800
            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-23 16:45 -0500
              Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 11:43 -0800
                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 15:42 -0500
                  Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 13:40 -0800
                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 20:23 -0500
                      Re: Is this valid C? jameskuyper@verizon.net - 2017-02-24 18:54 -0800
                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-24 23:17 -0500
                          Re: Is this valid C? jameskuyper@verizon.net - 2017-02-25 19:15 -0800
                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-25 23:10 -0500
                            Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-26 12:00 -0500
                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-26 15:57 -0500
                                Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-26 21:54 +0000
                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-26 19:45 -0500
                                    Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 01:29 +0000
                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 10:52 -0500
                                        Re: Is this valid C? Ike Naar <ike@iceland.freeshell.org> - 2017-02-27 16:04 +0000
                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 11:16 -0500
                                            Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 20:42 +0000
                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:18 -0500
                                                Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-28 01:34 +0000
                                                  Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-27 17:55 -0800
                                                    Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-28 02:16 +0000
                                                      Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-28 10:09 +0000
                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 23:28 -0500
                                                    Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-28 10:16 +0000
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 12:31 -0500
                                                        Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-28 20:17 +0100
                                                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 19:26 +0000
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:42 -0500
                                                            Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-28 23:30 +0100
                                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 08:37 -0500
                                    Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 09:19 +0000
                                      Re: Is this valid C? James Kuyper <jameskuyper@verizon.net> - 2017-02-27 09:14 -0500
                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 11:00 -0500
                                        Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 16:24 +0000
                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 10:58 -0500
                                        Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 16:39 +0000
                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 15:19 -0500
                                            Re: Is this valid C? Ike Naar <ike@iceland.freeshell.org> - 2017-02-27 20:57 +0000
                                              Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 21:52 +0000
                                                Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:21 -0500
                                                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 23:33 +0000
                                                    Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 18:49 -0500
                                                      Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 16:06 -0800
                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 19:52 -0500
                                                          Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 17:10 -0800
                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 23:31 -0500
                                                              Re: Is this valid C? jameskuyper@verizon.net - 2017-02-28 06:44 -0800
                                                      Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 00:14 +0000
                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 20:00 -0500
                                                          Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 02:37 +0000
                                                            Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 23:37 -0500
                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:20 -0500
                                            Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 21:21 +0000
                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:29 -0500
                                                Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 15:04 -0800
                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 18:58 -0500
                                                    Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 16:18 -0800
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 20:03 -0500
                                                        Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 17:17 -0800
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 23:40 -0500
                                                        Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 02:57 +0000
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 23:46 -0500
                                                  Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 00:01 +0000
                                                    Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-27 19:23 -0500
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 20:05 -0500
                                                        Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 17:51 -0800
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 00:00 -0500
                                                            Re: Is this valid C? jameskuyper@verizon.net - 2017-02-28 09:23 -0800
                                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 13:32 -0500
                                                                Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-03-01 07:36 +1300
                                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:43 -0500
                                                                    Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 21:21 +0000
                                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 11:39 -0500
                                                                        Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-01 16:56 +0000
                                                                          Re: Is this valid C? supercat@casperkitty.com - 2017-03-01 09:12 -0800
                                                                            Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-01 19:07 +0100
                                                                            Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-30 08:34 -0700
                                                                        Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-03-01 18:00 +0100
                                                                        Re: Is this valid C? jameskuyper@verizon.net - 2017-03-01 09:49 -0800
                                                                          Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-16 20:52 -0700
                                                                    Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-03-01 14:26 +1300
                                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 11:40 -0500
                                                                        Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-01 16:57 +0000
                                                                        Re: Is this valid C? me <crisdunbar@gmail.com> - 2017-03-01 10:19 -0800
                                                                Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-28 20:25 +0100
                                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:45 -0500
                                                                    Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-03-01 14:28 +1300
                                                                      Re: Is this valid C? cross@spitfire.i.gajendra.net (Dan Cross) - 2017-03-01 03:17 +0000
                                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 11:43 -0500
                                                                        Re: Is this valid C? jameskuyper@verizon.net - 2017-03-01 10:28 -0800
                                                                Re: Is this valid C? jameskuyper@verizon.net - 2017-02-28 11:35 -0800
                                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:46 -0500
                                                      Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 03:07 +0000
                                                Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-27 23:56 +0000
                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 20:18 -0500
                                                    Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 18:05 -0800
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 00:02 -0500
                                            Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 21:36 +0000
                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:32 -0500
                                                Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-28 01:29 +0000
                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 00:09 -0500
                                                    Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 05:22 +0000
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 12:36 -0500
                                                        Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 18:10 +0000
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 13:35 -0500
                                                            Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 18:56 +0000
                                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:46 -0500
                                                      Re: Is this valid C? Gareth Owen <gwowen@gmail.com> - 2017-02-28 19:39 +0000
                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:48 -0500
                                                    Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-28 10:46 +0000
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 12:43 -0500
                                                        Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-01 02:08 +0000
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 11:52 -0500
                                                            Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-01 16:58 +0000
                                                            Re: Is this valid C? jameskuyper@verizon.net - 2017-03-01 09:32 -0800
                                                            Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-01 21:50 +0000
                                                        Re: Is this valid C? jameskuyper@verizon.net - 2017-03-01 09:18 -0800
                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-26 19:47 -0500
                                Re: Is this valid C? jameskuyper@verizon.net - 2017-02-26 19:24 -0800
                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 11:08 -0500
                                    Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 10:15 -0800
                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 15:08 -0500
                                        Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 13:26 -0800
                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:40 -0500
                                            Re: Is this valid C? jameskuyper@verizon.net - 2017-02-27 15:37 -0800
                                              Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-27 18:54 -0500
                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 19:02 -0500
                                                Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 00:35 +0000
                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 19:44 -0500
                                                    Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 02:27 +0000
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 23:20 -0500
                                                        Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-02-28 04:45 +0000
                                                          Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-28 17:57 +1300
                                                            Re: Is this valid C? GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-02-28 11:27 +0100
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 13:06 -0500
                                                        Re: Is this valid C? jameskuyper@verizon.net - 2017-02-28 06:26 -0800
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 13:09 -0500
                                            Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-28 17:36 +1300
                                              Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 13:10 -0500
                                                Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-03-01 07:28 +1300
                                                  Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-28 15:49 -0500
                                                    Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-03-01 14:30 +1300
                                                      Re: Is this valid C? Richard Heathfield <rjh@cpax.org.uk> - 2017-03-01 01:38 +0000
                                                        Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 11:54 -0500
                                                      Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 11:53 -0500
                                                        Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-03-02 07:35 +1300
                                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-03-01 16:50 -0500
                                        Re: Is this valid C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-27 21:45 +0000
                                          Re: Is this valid C? Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-27 17:43 -0500
                Re: Is this valid C? "James R. Kuyper" <jameskuyper@verizon.net> - 2017-02-24 16:59 -0500
      Re: Is this valid C? David Brown <david.brown@hesbynett.no> - 2017-02-19 11:03 +0100
        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-19 12:10 +0000
    Re: Is this valid C? Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-19 10:34 -0800
    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-23 22:39 +0000
      Re: Is this valid C? Ian Collins <ian-news@hotmail.com> - 2017-02-24 11:49 +1300
        Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-23 15:25 -0800
      Re: Is this valid C? supercat@casperkitty.com - 2017-02-23 15:09 -0800
    Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-25 14:29 +0000
      Re: Is this valid C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-02-25 07:04 -0800
        Re: Is this valid C? BartC <bc@freeuk.com> - 2017-02-25 15:27 +0000
      Re: Is this valid C? Keith Thompson <kst-u@mib.org> - 2017-02-25 13:13 -0800

Page 1 of 27  [1] 2 3 … 27  Next page →


#104113 — Is this valid C?

FromBartC <bc@freeuk.com>
Date2017-02-18 00:43 +0000
SubjectIs this valid C?
Message-ID<o8858o$g1g$1@dont-email.me>
(I've left the subject general in case anything else comes up then I 
won't need a new thread each time.)

Is the comparison valid here:

    char *p;

    if (p > 0) ....

Some compilers complain (one in three), others don't.

I've looked at the standard (6.5.8p2) but according to that you're not 
even allowed to compare two integers! That's what it looked like at 
first anyway. Presumably 'real' type means arithmetic types not just floats.

However it then goes on to say something about both pointers pointing 
into the same object, so it would be unlikely that 0 belongs in the same 
object as p. Yet, with (p >= 0), you might expect this to yield 1 when p 
is zero.

-- 
Bartc

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#104115

FromBen Bacarisse <ben.usenet@bsb.me.uk>
Date2017-02-18 02:41 +0000
Message-ID<87vas8cjas.fsf@bsb.me.uk>
In reply to#104113
BartC <bc@freeuk.com> writes:

> (I've left the subject general in case anything else comes up then I
> won't need a new thread each time.)
>
> Is the comparison valid here:
>
>    char *p;

It's better to initialise objects in example or you add another reason
for something being undefined.

>    if (p > 0) ....

No, it's not, but no diagnostic is required.

> Some compilers complain (one in three), others don't.
>
> I've looked at the standard (6.5.8p2) but according to that you're not
> even allowed to compare two integers! That's what it looked like at
> first anyway. Presumably 'real' type means arithmetic types not just
> floats.

No.  The real types and the arithmetic types are different sets of
types:

  "The integer and real floating types are collectively called real
  types."

Whereas

  "Integer and floating types are collectively called arithmetic
  types. Each arithmetic type belongs to one type domain: the real type
  domain comprises the real types, the complex type domain comprises the
  complex types."

> However it then goes on to say something about both pointers pointing
> into the same object, so it would be unlikely that 0 belongs in the
> same object as p. Yet, with (p >= 0), you might expect this to yield 1
> when p is zero.

It's undefined by C.  0 does not point to any object so none of the
relational operators can be used with it in a defined way.

-- 
Ben.

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#104305

FromPhilip Lantz <prl@canterey.us>
Date2017-02-20 18:00 -0800
Message-ID<MPG.33153efdc3d4b18a130@news.eternal-september.org>
In reply to#104115
Ben Bacarisse wrote:
> BartC writes:
> >
> > Is the comparison valid here:
> >
> >    char *p;
> >    if (p > 0) ....
> 
> No, it's not, but no diagnostic is required.

If I'm not mistaken, it's a violation of a "shall" in a constraint, so a
diagnostic is required.

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#104306

FromKeith Thompson <kst-u@mib.org>
Date2017-02-20 18:46 -0800
Message-ID<lnr32sl0q8.fsf@kst-u.example.com>
In reply to#104305
Philip Lantz <prl@canterey.us> writes:
> Ben Bacarisse wrote:
>> BartC writes:
>> >
>> > Is the comparison valid here:
>> >
>> >    char *p;
>> >    if (p > 0) ....
>> 
>> No, it's not, but no diagnostic is required.
>
> If I'm not mistaken, it's a violation of a "shall" in a constraint, so a
> diagnostic is required.

I believe you're right.  For relational operators:

    One of the following shall hold:
        - both operands have real type; or
        - both operands are pointers to qualified or unqualified
          versions of compatible object types.

Since p is of type char* and 0 is type int (which is a real type),
the constraint is violated.

(For equality operators, it's also valid for one operand to be
a pointer and the other a null pointer constant.  In that case,
the null pointer constant operand is converted to the type of the
pointer operand.  For relational operators, there no such conversion
is specified.)

-- 
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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#104127

FromDavid Brown <david.brown@hesbynett.no>
Date2017-02-18 11:47 +0100
Message-ID<o898k4$mnn$1@dont-email.me>
In reply to#104113
On 18/02/17 01:43, BartC wrote:
> (I've left the subject general in case anything else comes up then I
> won't need a new thread each time.)
>
> Is the comparison valid here:
>
>    char *p;
>
>    if (p > 0) ....
>
> Some compilers complain (one in three), others don't.
>
> I've looked at the standard (6.5.8p2) but according to that you're not
> even allowed to compare two integers! That's what it looked like at
> first anyway. Presumably 'real' type means arithmetic types not just
> floats.

6.2.5, paragraph 17 and 18 is what you are looking for.  My pdf reader 
has a fantastic feature that helped here - the "search" function.

>
> However it then goes on to say something about both pointers pointing
> into the same object, so it would be unlikely that 0 belongs in the same
> object as p. Yet, with (p >= 0), you might expect this to yield 1 when p
> is zero.
>

(No need for me to repeat Ben's explanation.)

[toc] | [prev] | [next] | [standalone]


#104153

FromAndrey Tarasevich <andreytarasevich@hotmail.com>
Date2017-02-18 10:08 -0800
Message-ID<o8a2e1$31i$1@dont-email.me>
In reply to#104113
On 2/17/2017 4:43 PM, BartC wrote:
> (I've left the subject general in case anything else comes up then I
> won't need a new thread each time.)
>
> Is the comparison valid here:
>
>    char *p;
>
>    if (p > 0) ....
>
> Some compilers complain (one in three), others don't.
>
> I've looked at the standard (6.5.8p2) but according to that you're not
> even allowed to compare two integers! That's what it looked like at
> first anyway. Presumably 'real' type means arithmetic types not just
> floats.
>

"*6.5.8 Relational operators*

*Constraints*

2 One of the following shall hold:
— both operands have real type; or
— both operands are pointers to qualified or unqualified versions of 
compatible object types."

No need to look further. The code is invalid.

'p' is not of real type.

'0' is not an operand of pointer type. Usage of null-pointer constant in 
pointer contexts requires an explicit permission, as the one present in 
constraints of equality operators.

-- 
Best regards,
Andrey Tarasevich

[toc] | [prev] | [next] | [standalone]


#104160

FromBartC <bc@freeuk.com>
Date2017-02-18 23:30 +0000
Message-ID<o8alb0$6pb$1@dont-email.me>
In reply to#104113
sizeof

I've just started with this and it's looking tricky.

Assuming that A,B,C are all arrays, then trials show that:

   sizeof (C)             C stays an array

   sizeof (A,B,C)         A,B,C all converted to pointers

   sizeof x?B:C           B,C both converted to pointers

Presumably C is not a direct operand of sizeof in the last two cases. 
But here:

   struct {int a, C[10];} S;

   sizeof S.C

C is treated as an array, even though it's not a direct operand of 
sizeof either. I guess the same applies to the last in a chain of ".", 
"->" and "[]" operators (I don't think "()" can yield an array type).

So what are the rules? Does special behaviour required by sizeof (and 
_Alignof etc) only come into play when the last thing done in the 
subexpression forming its operand, involves converting an array to a 
pointer? But then that would apply to 'sizeof (A,B,C)' too!




-- 
bartc

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#104162

Fromjameskuyper@verizon.net
Date2017-02-18 15:50 -0800
Message-ID<92c91eb8-8b00-4440-b12d-ee8a3000b81a@googlegroups.com>
In reply to#104160
On Saturday, February 18, 2017 at 6:30:30 PM UTC-5, Bart wrote:
> sizeof
> 
> I've just started with this and it's looking tricky.
> 
> Assuming that A,B,C are all arrays, then trials show that:
> 
>    sizeof (C)             C stays an array
> 
>    sizeof (A,B,C)         A,B,C all converted to pointers
> 
>    sizeof x?B:C           B,C both converted to pointers
> 
> Presumably C is not a direct operand of sizeof in the last two cases. 
> But here:
> 
>    struct {int a, C[10];} S;
> 
>    sizeof S.C
> 
> C is treated as an array, even though it's not a direct operand of 
> sizeof either. I guess the same applies to the last in a chain of
The key issue is that A,B,C is a series of comma expressions, with a result that depends upon the types of it's operands.  ".", 
> "->" and "[]" operators (I don't think "()" can yield an array type).
> 
> So what are the rules? Does special behaviour required by sizeof (and 
> _Alignof etc) only come into play when the last thing done in the 
> subexpression forming its operand, involves converting an array to a 
> pointer? But then that would apply to 'sizeof (A,B,C)' too!

The rule is that "Except when it is the operand of the sizeof operator, the _Alignof operator, or the unary & operator, or is a string literal used to initialize an array, an expression that has type ‘‘array of type’’ is converted to an expression with type ‘‘pointer to type’’ that points to the initial element of the array object and is not an lvalue." (6.3.2.1p3)

In sizeof(A,B,C), neither A, nor B, nor C are operands of sizeof, they are operands of the comma operator. As a result, each of them gets converted to pointers to the first element of the corresponding array. The final comma expression has a value that points at the first element of C. sizeof(A,B,C) therefore gives the size of such a pointer.

In sizeof(S.C), neither S nor C are operands of sizeof. However, equally important, C is not, in this context, an expression of array type. The member selection operators are special, because their right operand is a member name, not an expression. A member name is not converted into a pointer to the first element of the array, even if the member has array type. This is good, because such a pointer would not be an acceptable right operand for the member selection operators. On the other hand, the entire expression S.C is an lvalue of array type, and would undergo that conversion in most other contexts. However, in this context the entire expression is the direct operand of the sizeof expression, and therefore also does not get converted.

[toc] | [prev] | [next] | [standalone]


#104164

FromBartC <bc@freeuk.com>
Date2017-02-19 00:53 +0000
Message-ID<o8aq7a$m51$1@dont-email.me>
In reply to#104162
On 18/02/2017 23:50, jameskuyper@verizon.net wrote:
> On Saturday, February 18, 2017 at 6:30:30 PM UTC-5, Bart wrote:

>>    struct {int a, C[10];} S;
>>
>>    sizeof S.C
>>
>> C is treated as an array, even though it's not a direct operand of
>> sizeof either. I guess the same applies to the last in a chain of
> The key issue is that A,B,C is a series of comma expressions, with a result that depends upon the types of it's operands.  ".",
>> "->" and "[]" operators (I don't think "()" can yield an array type).
>>
>> So what are the rules?

> The rule is that "Except when it is the operand of the sizeof operator, the _Alignof operator, or the unary & operator, or is a string literal used to initialize an array, an expression that has type ‘‘array of type’’ is converted to an expression with type ‘‘pointer to type’’ that points to the initial element of the array object and is not an lvalue." (6.3.2.1p3)
>
> In sizeof(A,B,C), neither A, nor B, nor C are operands of sizeof, they are operands of the comma operator. As a result, each of them gets converted to pointers to the first element of the corresponding array. The final comma expression has a value that points at the first element of C. sizeof(A,B,C) therefore gives the size of such a pointer.
>
> In sizeof(S.C), neither S nor C are operands of sizeof. However, equally important, C is not, in this context, an expression of array type. The member selection operators are special, because their right operand is a member name, not an expression. A member name is not converted into a pointer to the first element of the array, even if the member has array type. This is good, because such a pointer would not be an acceptable right operand for the member selection operators. On the other hand, the entire expression S.C is an lvalue of array type, and would undergo that conversion in most other contexts. However, in this context the entire expression is the direct operand of the sizeof expression, and therefore also does not get converted.
>

OK, thanks. So I'll special case ".", "->" and "[]" operators when the 
result is a direct operand of sizeof.

(It's going to be awkward to stop the array->pointer conversions 
happening, as an operator can't easily tell if it is itself an immediate 
operand of sizeof, so I will have to store the array information just in 
case it needs to be recovered.)

-- 
bartc

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#104163

FromAndrey Tarasevich <andreytarasevich@hotmail.com>
Date2017-02-18 16:01 -0800
Message-ID<o8an5i$bmv$1@dont-email.me>
In reply to#104160
On 2/18/2017 3:30 PM, BartC wrote:
>
> So what are the rules? Does special behaviour required by sizeof (and
> _Alignof etc) only come into play when the last thing done in the
> subexpression forming its operand, involves converting an array to a
> pointer? But then that would apply to 'sizeof (A,B,C)' too!
>

The rule is simple: when an array is used as the immediate operand of 
'sizeof, '_Alignof' or unary '&', the array remains an array. It does 
not decay to pointer.

In your 'sizeof (A,B,C)' example, array 'C' is an operand of ',' 
operator. So it decays.

-- 
Best regards,
Andrey Tarasevich

[toc] | [prev] | [next] | [standalone]


#104165

FromKeith Thompson <kst-u@mib.org>
Date2017-02-18 19:20 -0800
Message-ID<ln60k6q31w.fsf@kst-u.example.com>
In reply to#104163
Andrey Tarasevich <andreytarasevich@hotmail.com> writes:
> On 2/18/2017 3:30 PM, BartC wrote:
>> So what are the rules? Does special behaviour required by sizeof (and
>> _Alignof etc) only come into play when the last thing done in the
>> subexpression forming its operand, involves converting an array to a
>> pointer? But then that would apply to 'sizeof (A,B,C)' too!
>
> The rule is simple: when an array is used as the immediate operand of 
> 'sizeof, '_Alignof' or unary '&', the array remains an array. It does 
> not decay to pointer.

The _Alignof case is an error in the N1570 draft, corrected in the
published ISO C11 standard.  The _Alignof operator can only be applied
to a parenthesized type name (like sizeof), not to an expresion (unlike
sizeof).  The reasons for this difference are not clear; I asked Larry
Jones, a committee member, and he didn't know.

(I did some research on the history of alignof; I'll post it in
comp.std.c.)

(The third case where an array expression doesn't decay to a pointer
expression is when it's a string literal in an initializer used to
initialize an array object.)

Note that what's commonly called "decay" is not a run-time type
conversion.  It's a compile-time conversion ("adjustment" might have
been clearer) of an array expression to a pointer expression.

> In your 'sizeof (A,B,C)' example, array 'C' is an operand of ',' 
> operator. So it decays.

BartC's example

  struct {int a, C[10];} S;
  sizeof S.C

is actually quite straightforward.  `S.C` is an expression of
array type.  Since that expression is the operand of `sizeof`, it
is not converted to a pointer expression. (`C` by itself is not an
expression at all.)

-- 
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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#104175

FromGOTHIER Nathan <nathan.gothier@gmail.com>
Date2017-02-19 09:41 +0100
Message-ID<20170219094101.dc049e830e40645da442d57f@gmail.com>
In reply to#104165
On Sat, 18 Feb 2017 19:20:43 -0800
Keith Thompson <kst-u@mib.org> wrote:

> The _Alignof case is an error in the N1570 draft, corrected in the
> published ISO C11 standard.  The _Alignof operator can only be applied
> to a parenthesized type name (like sizeof), not to an expresion (unlike
> sizeof).  The reasons for this difference are not clear; I asked Larry
> Jones, a committee member, and he didn't know.

Did he know the C language before taking the money? :-D

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#104178

FromRichard Heathfield <rjh@cpax.org.uk>
Date2017-02-19 09:14 +0000
Message-ID<o8bnhs$lrv$1@dont-email.me>
In reply to#104175
On 19/02/17 08:41, GOTHIER Nathan wrote:
> On Sat, 18 Feb 2017 19:20:43 -0800
> Keith Thompson <kst-u@mib.org> wrote:
>
>> The _Alignof case is an error in the N1570 draft, corrected in the
>> published ISO C11 standard.  The _Alignof operator can only be applied
>> to a parenthesized type name (like sizeof), not to an expresion (unlike
>> sizeof).  The reasons for this difference are not clear; I asked Larry
>> Jones, a committee member, and he didn't know.
>
> Did he know the C language before taking the money? :-D

Larry Jones's knowledge of the C language is encyclopaedic, and in all 
likelihood far superior to yours. It is certainly vastly superior to mine.

I realise you were trying to make a joke, but it wasn't a terribly good one.

-- 
Richard Heathfield
Email: rjh at cpax dot org dot uk
"Usenet is a strange place" - dmr 29 July 1999
Sig line 4 vacant - apply within

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#104179

FromGOTHIER Nathan <nathan.gothier@gmail.com>
Date2017-02-19 10:30 +0100
Message-ID<20170219103044.05d4bafaaa4a14229b8549a5@gmail.com>
In reply to#104178
On Sun, 19 Feb 2017 09:14:20 +0000
Richard Heathfield <rjh@cpax.org.uk> wrote:

> > Did he know the C language before taking the money? :-D
> 
> Larry Jones's knowledge of the C language is encyclopaedic, and in all 
> likelihood far superior to yours. It is certainly vastly superior to mine.
> 
> I realise you were trying to make a joke, but it wasn't a terribly good one.

I was half-joking since he can't explain the choice made by the committee which
he's a member...

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#104192

FromKeith Thompson <kst-u@mib.org>
Date2017-02-19 07:21 -0800
Message-ID<lnk28mnr3d.fsf@kst-u.example.com>
In reply to#104178
Richard Heathfield <rjh@cpax.org.uk> writes:
> On 19/02/17 08:41, GOTHIER Nathan wrote:
>> On Sat, 18 Feb 2017 19:20:43 -0800
>> Keith Thompson <kst-u@mib.org> wrote:
>>
>>> The _Alignof case is an error in the N1570 draft, corrected in the
>>> published ISO C11 standard.  The _Alignof operator can only be applied
>>> to a parenthesized type name (like sizeof), not to an expresion (unlike
>>> sizeof).  The reasons for this difference are not clear; I asked Larry
>>> Jones, a committee member, and he didn't know.
>>
>> Did he know the C language before taking the money? :-D
>
> Larry Jones's knowledge of the C language is encyclopaedic, and in all
> likelihood far superior to yours. It is certainly vastly superior to
> mine.
>
> I realise you were trying to make a joke, but it wasn't a terribly good one.

Especially since committee members aren't paid.

-- 
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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#104204

FromGOTHIER Nathan <nathan.gothier@gmail.com>
Date2017-02-19 17:28 +0100
Message-ID<20170219172821.66a6eb4c6ba287b53c4d37c9@gmail.com>
In reply to#104192
On Sun, 19 Feb 2017 07:21:58 -0800
Keith Thompson <kst-u@mib.org> wrote:

> Especially since committee members aren't paid.

Indeed. They're good christians and are working for free... since the Vatican
is the richest country in the world. :o)

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#104207

From"James R. Kuyper" <jameskuyper@verizon.net>
Date2017-02-19 11:53 -0500
Message-ID<ef2c0c6b-1558-19a9-636f-a27fe79b69e1@verizon.net>
In reply to#104204
On 02/19/2017 11:28 AM, GOTHIER Nathan wrote:
> On Sun, 19 Feb 2017 07:21:58 -0800
> Keith Thompson <kst-u@mib.org> wrote:
>
>> Especially since committee members aren't paid.
>
> Indeed. They're good christians and are working for free... since the Vatican
> is the richest country in the world. :o)

I'm sure that many committee members are Christians, but I'd be very 
surprised if they all were.

Voting members of the committee pay hefty annual membership fees ($800, 
the last time I checked) for the privilege of having a vote, and (IIRC) 
have an obligation to attend at least two of the three annual meetings. 
Since those meetings are held in many different places around the world, 
travel expenses can become significant, too.

What reason do you have for making a connection to the Vatican? I get 
the impression that you're the kind of person that doesn't need to have 
a reason - but I'm giving you the opportunity to dispute that impression.

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#104210

FromGOTHIER Nathan <nathan.gothier@gmail.com>
Date2017-02-19 18:12 +0100
Message-ID<20170219181229.e76dda68fc672b943218e838@gmail.com>
In reply to#104207
On Sun, 19 Feb 2017 11:53:49 -0500
"James R. Kuyper" <jameskuyper@verizon.net> wrote:

> Voting members of the committee pay hefty annual membership fees ($800, 
> the last time I checked) for the privilege of having a vote, and (IIRC) 
> have an obligation to attend at least two of the three annual meetings. 
> Since those meetings are held in many different places around the world, 
> travel expenses can become significant, too.

Fees and travels are often paid by employers such as Microsoft...


> What reason do you have for making a connection to the Vatican? I get 
> the impression that you're the kind of person that doesn't need to have 
> a reason - but I'm giving you the opportunity to dispute that impression.
 
Nobody lives with only fresh water so please don't let us think committee
members are good christians working for free. There's no shame to be paid for a
work... if the work is real.

The connection to the Vatican is the hypocrisy of people trying to pretend what
they actually aren't even for a religious order. You can also replace the
Vatican with ISIS or Israel.

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#104213

From"James R. Kuyper" <jameskuyper@verizon.net>
Date2017-02-19 13:10 -0500
Message-ID<75505245-7974-679a-19db-851f6f177ba5@verizon.net>
In reply to#104210
On 02/19/2017 12:12 PM, GOTHIER Nathan wrote:
> On Sun, 19 Feb 2017 11:53:49 -0500
> "James R. Kuyper" <jameskuyper@verizon.net> wrote:
>
>> Voting members of the committee pay hefty annual membership fees ($800,
>> the last time I checked) for the privilege of having a vote, and (IIRC)
>> have an obligation to attend at least two of the three annual meetings.
>> Since those meetings are held in many different places around the world,
>> travel expenses can become significant, too.
>
> Fees and travels are often paid by employers such as Microsoft...

A large fraction of the committee have no such support.

>> What reason do you have for making a connection to the Vatican? I get
>> the impression that you're the kind of person that doesn't need to have
>> a reason - but I'm giving you the opportunity to dispute that impression.
>
> Nobody lives with only fresh water so please don't let us think committee
> members are good christians working for free. ...

Again - who said they were Christians? And most of them are working for 
free. Even most of the ones with corporate support are only having the 
membership fees and travel expenses covered; they don't get paid for the 
time they spend on committee work. If you find it hard to imagine that 
anyone would ever do any volunteer work (or if you imagine that someone 
has to be a Christian to be a volunteer), you're sadly mistaken. You 
must have lived your life surrounded by some pretty awful people.

> ... There's no shame to be paid for a
> work... if the work is real.

Nor is there any shame in volunteering, and many people do.

> The connection to the Vatican is the hypocrisy of people trying to pretend what
> they actually aren't even for a religious order. You can also replace the
> Vatican with ISIS or Israel.

No one's pretending. It's quite real, and no one is suggesting a 
religious motivation for the volunteerism (though I'm sure that for some 
of them, religion does play a role).

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#104221

FromGOTHIER Nathan <nathan.gothier@gmail.com>
Date2017-02-19 20:24 +0100
Message-ID<20170219202409.705f9e63b747239309ebf26e@gmail.com>
In reply to#104213
On Sun, 19 Feb 2017 13:10:04 -0500
"James R. Kuyper" <jameskuyper@verizon.net> wrote:

> Again - who said they were Christians? And most of them are working for 
> free. Even most of the ones with corporate support are only having the 
> membership fees and travel expenses covered; they don't get paid for the 
> time they spend on committee work. If you find it hard to imagine that 
> anyone would ever do any volunteer work (or if you imagine that someone 
> has to be a Christian to be a volunteer), you're sadly mistaken. You 
> must have lived your life surrounded by some pretty awful people.

I think you have been hurt by the word "Christian". For me talking about
Christian in comp.lang.c is a word game and a rhetorical figure for
volunteering in a world where humanity is fully corrupted by money and power.

 
> Nor is there any shame in volunteering, and many people do.

Indeed, however I have to confess I have no faith in humanity anymore.


> No one's pretending. It's quite real, and no one is suggesting a 
> religious motivation for the volunteerism (though I'm sure that for some 
> of them, religion does play a role).

From my experience, many bad people are looking for redemption in religion or
volonteering. Those people are often in a good social situation but with heavy
dark secrets not as "Christian" as they could be proud of...

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