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Groups > comp.lang.c > #3405

Re: puzzling error

From "Joachim Schmitz" <nospam.jojo@schmitz-digital.de>
Newsgroups comp.lang.c
Subject Re: puzzling error
Date 2011-05-07 09:59 +0200
Organization 1&1 Internet AG
Message-ID <iq2u62$cc3$1@online.de> (permalink)
References <4dc29b93$0$5067$bbae4d71@news.suddenlink.net> <ipu74e$r3m$1@news.cict.fr> <4dc2daae$0$5070$bbae4d71@news.suddenlink.net> <79udnSOPKtxVdV_QnZ2dnUVZ_v6dnZ2d@bestweb.net> <4dc2ec05$0$5045$bbae4d71@news.suddenlink.net>

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Bill Cunningham wrote:
> Kenneth Brody wrote:
>
>> On gcc (and many other compilers, though the Standard is mute on the
>> subject of command line flags to a compiler), the "-D_GNU_SOURCE"
>> flag on the command line is equivalent of putting this at the top of
>> the source file:
>>     #define _GNU_SOURCE
>>
>> You say you tried the #define in the source file.  Did you put it
>> above the #include <string.h> line?  These two versions are _not_
>> equivalent:
>>     #define _GNU_SOURCE
>>     #include <stdio.h>
>>     #include <string.h>
>> and
>>     #include <stdio.h>
>>     #include <string.h>
>>     #define _GNU_SOURCE
>
>    No I put the define in the middle of the two include directives.

If that didn't help, this would indicate that stdio.h includes string.h, and 
the 'include header guard' of string.h prevents it's content from being seen 
the 2nd time thru.
The '-D_GNU_SOURCE' is equivalent to a #define at the start of your source

Bye, Jojo

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Thread

puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 08:44 -0400
  Re: puzzling error Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-05-05 13:56 +0100
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:11 -0400
      Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 09:26 -0700
        Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 13:26 -0400
        Re: puzzling error Chad <cdalten@gmail.com> - 2011-05-05 11:34 -0700
        Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 14:52 -0400
        Re: puzzling error Paul N <gw7rib@aol.com> - 2011-05-05 13:39 -0700
          Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 13:54 -0700
        Re: puzzling error Seebs <usenet-nospam@seebs.net> - 2011-05-05 20:38 +0000
          Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 14:11 -0700
          Re: puzzling error Angel <angel+news@spamcop.net> - 2011-05-05 23:40 +0000
      Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-05 13:55 -0400
        Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 14:04 -0400
          Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-09 13:26 -0400
        Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 11:31 -0700
    Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 09:06 -0700
      Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:30 -0400
      Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-05 13:40 -0400
      Re: puzzling error Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-05-05 21:32 +0100
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 13:34 -0400
      Re: puzzling error Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-05-05 21:38 +0100
        Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-06 02:39 -0400
          Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 23:40 -0700
  Re: puzzling error Ike Naar <ike@sverige.freeshell.org> - 2011-05-05 13:01 +0000
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:05 -0400
      Re: puzzling error Angel <angel+news@spamcop.net> - 2011-05-05 16:23 +0000
    Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 09:08 -0700
  Re: puzzling error Marc Boyer <Marc.Boyer@cert.onera.fr.invalid> - 2011-05-05 13:02 +0000
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:34 -0400
      Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:35 -0400
      Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:40 -0400
      Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-05 14:08 -0400
        Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 11:35 -0700
          Re: puzzling error Angel <angel+news@spamcop.net> - 2011-05-05 18:54 +0000
            OT: man strfry (was Re: puzzling error) Kenneth Brody <kenbrody@spamcop.net> - 2011-05-09 13:33 -0400
              Re: man strfry (was Re: puzzling error) "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-11 14:30 -0400
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 13:13 -0400
      Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-05 14:13 -0400
        Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 14:27 -0400
          Re: puzzling error "Joachim Schmitz" <nospam.jojo@schmitz-digital.de> - 2011-05-07 09:59 +0200
            Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-07 11:20 -0700
  Re: puzzling error August Karlstrom <fusionfile@gmail.com> - 2011-05-05 15:58 +0200
  Re: puzzling error "osmium" <r124c4u102@comcast.net> - 2011-05-05 10:38 -0500
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:03 -0400
      Re: puzzling error Joe Wright <joewwright@comcast.net> - 2011-05-05 13:19 -0400
      Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-05 13:34 -0400
        Re: puzzling error "osmium" <r124c4u102@comcast.net> - 2011-05-05 12:54 -0500
        Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 14:08 -0400
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:06 -0400
    Re: puzzling error Keith Thompson <kst-u@mib.org> - 2011-05-05 09:11 -0700
      Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:36 -0400
    Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-05 13:33 -0400
  Re: puzzling error Angel <angel+news@spamcop.net> - 2011-05-05 16:01 +0000
    Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:09 -0400
      Re: puzzling error Angel <angel+news@spamcop.net> - 2011-05-05 16:19 +0000
        Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:28 -0400
          Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 12:42 -0400
            Re: puzzling error "Bill Cunningham" <nospam@nspam.invalid> - 2011-05-05 13:16 -0400
      Re: puzzling error Kenneth Brody <kenbrody@spamcop.net> - 2011-05-05 13:41 -0400

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