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Groups > comp.lang.c > #67303

Re: How to read a data file whose size is unknown in C?

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: How to read a data file whose size is unknown in C?
Date 2015-08-13 09:14 -0700
Organization None to speak of
Message-ID <lnvbcjb1xa.fsf@kst-u.example.com> (permalink)
References <7b7a215a-b72a-48ba-bbdc-ddc22ad8c5b7@googlegroups.com> <mqhrun$9o$1@dont-email.me> <87oaib4bdo.fsf@bsb.me.uk> <mqi3ko$rr7$1@dont-email.me>

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jacobnavia <jacob@jacob.remcomp.fr> writes:
> Le 13/08/2015 14:32, Ben Bacarisse a écrit :
[...]
>> But it fails on most (all?) of those systems if the file is a pipe or
>> some other kinds of special files.  It's important to point that out
>> because it can seriously harm the usefulness of a tool if can only work
>> with seekable files.  It's probably not important to the OP, but anyone
>> using fseek to get a file's size should know all the consequences of
>> that design.
>>
>
> Well, that's true.
>
> So, the universally accepted advice:
>
> "Just read all the file, then you know its size" is ALSO wrong!!!
>
> You just keep reading the pipe and then... well, you can't start from 
> scratch!

Who says you need to start from scratch?

You can read from a pipe until you get an end-of-file indication.
With judicious use of realloc(), you can store all the data from the
pipe in an allocated array.  You *can't* do the same thing by using
fstat(), or fseek/ftell.  If the pipe never reports end-of-file,
hopefully you'll have some way to handle that.

Similar considerations apply to other things that act like files
but are not ordinary fixed-size disk files.  For example, I can
read 1898 bytes from /proc/stat on my system, but the file system
reports its size as 0 (and fseek() appears to work without error,
but ftell() then returns 0, which is odd).

I can type "view /proc/stat" ("view" is a read-only version of
the vi/vim text editor), and it works.  Apparently vim is clever
enough not to assume that either fstat or fseek/ftell reports an
accurate size.

-- 
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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Thread

How to read a data file whose size is unknown in C? fl <rxjwg98@gmail.com> - 2015-08-12 15:28 -0700
  Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-12 23:52 +0100
    Re: How to read a data file whose size is unknown in C? fl <rxjwg98@gmail.com> - 2015-08-12 16:13 -0700
      Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-13 00:33 +0100
      Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-13 00:06 +0000
        Re: How to read a data file whose size is unknown in C? raltbos@xs4all.nl (Richard Bos) - 2015-08-13 20:50 +0000
          Re: How to read a data file whose size is unknown in C? Stephen Sprunk <stephen@sprunk.org> - 2015-08-17 13:38 -0500
            Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-17 14:48 -0400
            Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-18 11:10 +0100
              Re: How to read a data file whose size is unknown in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-18 15:01 +0100
      Re: How to read a data file whose size is unknown in C? gordonb.8n5lc@burditt.org (Gordon Burditt) - 2015-08-14 02:33 -0500
        Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-14 10:06 +0200
          Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-14 09:14 +0100
            Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-14 21:27 +0000
              Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-15 09:52 +0200
          Re: How to read a data file whose size is unknown in C? Nobody <nobody@nowhere.invalid> - 2015-08-15 01:17 +0100
            Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-15 10:27 +0200
              Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-15 18:09 +0000
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-15 22:05 +0200
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-15 19:17 -0700
              Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-15 13:50 -0700
                Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-15 21:37 +0100
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-15 23:33 +0200
                Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-15 22:58 +0100
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-16 00:08 +0200
                Re: How to read a data file whose size is unknown in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-16 00:40 +0100
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-16 02:23 +0200
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-15 19:37 -0700
                Re: How to read a data file whose size is unknown in C? gazelle@shell.xmission.com (Kenny McCormack) - 2015-08-16 15:35 +0000
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-16 10:31 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-15 19:21 -0700
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-15 23:31 +0200
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-16 03:38 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-16 17:29 -0700
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-17 01:46 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-17 09:03 -0700
              Re: How to read a data file whose size is unknown in C? Nobody <nobody@nowhere.invalid> - 2015-08-16 03:23 +0100
              Re: How to read a data file whose size is unknown in C? Philip Lantz <prl@canterey.us> - 2015-08-17 00:56 -0700
                Re: How to read a data file whose size is unknown in C? Philip Lantz <prl@canterey.us> - 2015-08-17 01:08 -0700
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-17 10:20 +0200
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-17 09:01 -0700
            Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-15 11:31 +0100
              Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-15 14:01 -0700
                Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-15 22:28 +0100
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-15 19:29 -0700
                Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-16 10:50 +0100
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-16 17:40 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-16 20:22 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-16 21:27 -0700
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-17 01:31 -0700
                Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-17 20:25 +0000
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-17 16:29 -0700
                Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-17 23:43 +0000
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-17 18:20 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-17 19:10 -0700
                Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-18 05:26 +0000
                Re: How to read a data file whose size is unknown in C? raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:23 +0000
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-18 04:23 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-18 17:39 -0700
                Re: How to read a data file whose size is unknown in C? Ike Naar <ike@iceland.freeshell.org> - 2015-08-18 16:49 +0000
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-18 17:42 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-18 19:57 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-19 16:12 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-19 18:04 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-20 16:52 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-20 18:18 -0700
                Re: How to read a data file whose size is unknown in C? raltbos@xs4all.nl (Richard Bos) - 2015-08-21 20:39 +0000
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-21 17:17 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-21 19:35 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-22 18:28 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-22 22:43 -0700
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-22 00:07 -0400
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-22 18:59 -0700
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-22 23:22 -0400
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-23 19:17 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-23 21:35 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-24 16:59 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-24 17:57 -0700
                Re: How to read a data file whose size is unknown in C? Philip Lantz <prl@canterey.us> - 2015-08-25 01:09 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-25 19:03 -0700
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-25 22:16 -0400
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-26 14:29 -0700
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-26 18:28 -0400
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-26 19:25 -0700
                Re: How to read a data file whose size is unknown in C? David Brown <david.brown@hesbynett.no> - 2015-08-27 10:07 +0200
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-27 09:18 -0700
                Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-27 18:04 +0000
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-27 11:15 -0700
                Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-27 21:10 +0000
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-27 15:54 -0700
                Re: How to read a data file whose size is unknown in C? David Brown <david.brown@hesbynett.no> - 2015-08-28 09:28 +0200
                Re: How to read a data file whose size is unknown in C? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-08-27 13:12 -0600
                Re: How to read a data file whose size is unknown in C? David Brown <david.brown@hesbynett.no> - 2015-08-28 09:35 +0200
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-25 04:28 -0700
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-24 00:19 -0400
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-24 00:31 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-24 17:06 -0700
                Re: How to read a data file whose size is unknown in C? raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:25 +0000
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-22 10:45 -0400
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-21 17:40 -0400
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-19 00:40 -0400
                Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-19 05:38 +0000
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-19 10:20 -0400
                Re: How to read a data file whose size is unknown in C? raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:22 +0000
          Re: How to read a data file whose size is unknown in C? raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:21 +0000
        Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-14 08:48 -0400
    Re: How to read a data file whose size is unknown in C? fl <rxjwg98@gmail.com> - 2015-08-12 16:21 -0700
      Re: How to read a data file whose size is unknown in C? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-08-12 19:44 -0600
      Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-12 22:04 -0400
    Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-13 00:44 +0100
      Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-13 01:04 +0100
        Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-13 11:31 +0100
          Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-13 11:51 +0100
          Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-13 08:49 -0700
            Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-13 17:45 +0100
              Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-14 11:11 +0100
                Re: How to read a data file whose size is unknown in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-14 11:34 +0100
                Re: How to read a data file whose size is unknown in C? Robert Wessel <robertwessel2@yahoo.com> - 2015-08-14 12:21 -0500
                Re: How to read a data file whose size is unknown in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-14 19:07 +0100
                Re: How to read a data file whose size is unknown in C? Robert Wessel <robertwessel2@yahoo.com> - 2015-08-14 16:08 -0500
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-15 09:51 +0200
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-15 12:36 -0700
                Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-15 22:26 +0200
                Re: How to read a data file whose size is unknown in C? raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:26 +0000
                Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-22 08:11 -0700
                Re: How to read a data file whose size is unknown in C? Robert Wessel <robertwessel2@yahoo.com> - 2015-08-16 00:05 -0500
                Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-16 09:08 -0400
                Re: How to read a data file whose size is unknown in C? gazelle@shell.xmission.com (Kenny McCormack) - 2015-08-16 15:22 +0000
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-16 17:28 -0700
                Re: How to read a data file whose size is unknown in C? Tonton Th <tTh@nowhere.invalid> - 2015-08-14 11:06 +0000
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-14 09:28 -0700
          Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-13 18:56 +0000
            Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-13 13:39 -0700
            Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-14 00:21 +0100
              Re: How to read a data file whose size is unknown in C? Ian Collins <ian-news@hotmail.com> - 2015-08-14 12:26 +1200
                Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-14 11:00 +0100
                Re: How to read a data file whose size is unknown in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-14 11:30 +0100
                Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-14 12:31 +0100
                Re: How to read a data file whose size is unknown in C? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-08-14 04:51 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-14 09:21 -0700
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-14 09:23 -0700
                Re: How to read a data file whose size is unknown in C? David Kleinecke <dkleinecke@gmail.com> - 2015-08-14 16:57 -0700
                Re: How to read a data file whose size is unknown in C? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-08-15 14:49 -0600
                Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-15 19:31 -0700
              Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-14 00:35 +0100
              Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-14 08:57 -0700
                Re: How to read a data file whose size is unknown in C? Bartc <bc@freeuk.com> - 2015-08-14 17:28 +0100
      Re: How to read a data file whose size is unknown in C? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-08-13 00:12 +0000
  Re: How to read a data file whose size is unknown in C? Lőrinczy Zsigmond <nospam@for.me> - 2015-08-13 07:03 +0200
  Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-13 12:38 +0200
    Re: How to read a data file whose size is unknown in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 13:32 +0100
      Re: How to read a data file whose size is unknown in C? jacobnavia <jacob@jacob.remcomp.fr> - 2015-08-13 14:49 +0200
        Re: How to read a data file whose size is unknown in C? Richard Heathfield <rjh@cpax.org.uk> - 2015-08-13 14:05 +0100
        Re: How to read a data file whose size is unknown in C? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-13 14:50 +0100
        Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-13 09:14 -0700
        Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-13 12:42 -0400
    Re: How to read a data file whose size is unknown in C? Ken Brody <kenbrody@spamcop.net> - 2015-08-13 10:56 -0400
      Re: How to read a data file whose size is unknown in C? Keith Thompson <kst-u@mib.org> - 2015-08-13 09:16 -0700
        Re: How to read a data file whose size is unknown in C? Lőrinczy Zsigmond <zsiga@nospam.for.me> - 2015-08-13 18:12 +0200
          Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-13 12:50 -0400
            Re: How to read a data file whose size is unknown in C? Lőrinczy Zsigmond <nospam@for.me> - 2015-08-13 20:07 +0200
              Re: How to read a data file whose size is unknown in C? James Kuyper <jameskuyper@verizon.net> - 2015-08-13 14:38 -0400
  Re: How to read a data file whose size is unknown in C? John Bode <jfbode1029@gmail.com> - 2015-08-13 09:30 -0700
    Re: How to read a data file whose size is unknown in C? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-14 09:03 -0700

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