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

From David Brown <david.brown@hesbynett.no>
Newsgroups comp.lang.c
Subject Re: How to read a data file whose size is unknown in C?
Date 2015-08-28 09:28 +0200
Organization A noiseless patient Spider
Message-ID <mrp2et$be3$1@dont-email.me> (permalink)
References (6 earlier) <6c28b77b-4577-49af-b6ac-4fa1f3ed65ee@googlegroups.com> <55DE3D7B.7060706@verizon.net> <fc6d3b41-071d-43a6-88e4-ecf0a95d86d6@googlegroups.com> <lnegiowvr3.fsf@kst-u.example.com> <mrnjen$fva$1@speranza.aioe.org>

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On 27/08/15 20:04, glen herrmannsfeldt wrote:
> Keith Thompson <kst-u@mib.org> wrote:
>> Malcolm McLean <malcolm.mclean5@btinternet.com> writes:
> 
> (snip)
> 
>>>                                                           Those days
>>> are long gone. However there's still a basic mapping from C constructs
>>> to assembler constructs. The careful programmer has a pretty good idea
>>> what code he'll generate. 
>  
>> I consider myself a careful programmer, and 99% of the time I
>> have no clue what CPU instructions will be generated for the C
>> code I write.  I don't always know which CPU it's going to run on.
>> On rare occasions I might need to examine an assembly listing to
>> track down a bug.
> 
> OK, but one can usually rely on C compilers to generate code 
> approximately proportional to the size of the C code. That is
> not true for most other high-level languages.

Certainly with C (at least in your own code - it's harder once you call
a library function) one usually has an idea of what you will get in
terms of speed and size (even though, as Keith says, you might have no
idea of the details of the instructions generated).

But there is a huge gap between having a good idea of the sort of size,
speed and structures that will be generated, and being a "portable
assembler".  To be anything remotely like an assembler, you have to have
an almost perfect prediction about exactly what instructions will be
generated - perhaps allowing for flexibility of register choices.  C is
nowhere near that, and never has been.

> 
> There are some that one can hope for, but never really know.
> 
> One that I have wondered is which compilers recognize a / and %
> usign the same operands, and do one divide instruction that returns
> both quotient and remainder. (As hardware often does.)

Personally, I am glad that my compiler recognizes such symbols and if
possible turns them into something completely different (such as shifts
and masks if possible, or multiplication of the reciprocal if it can).
It's just an optimisation - a good compiler will do it well, a poor
compiler (or one with optimisations disabled or limited) will do it badly.

>  
> (snip on call interface)
> 
> (snip on calling assembler code)
> 
>>> So C is a portable assembler. That's the entire point and strength
>>> of the language.
>  
>> There is a very stark difference between an assembly language
>> and a non-assembly language.  Assembly language programs specify
>> CPU instructions.  C programs specify run-time behavior (with
>> a few extensions that let you exercise more control in limited
>> circumstances).
> 
> C is low enough that many tasks that previously required 
> assembler can now be done in C. 

Now /that/ is undoubtedly true.  But that does not mean, in any way,
that C is a "portable assembler".  When someone writes a simple mail
client in assembler (I've seen it done - madness!) which could be
written in 10,000 lines of C or 100 lines of Python, you do not call
assembler a "low-level Python" or "target-dependent C".

>  
>> Certainly C is lower level than some other languages.  C is
>> semantically closer to assembly language than, say, Python is.
>> But C and Python share the important characteristic that source
>> code specifies behavior.
> 
> But even more, many C operands correspond to operations on
> the usual processors. 

Many of the choices about the behaviour of C features were made with a
view to easy and efficient implementation on real systems.  The
undefined behaviour of C's shift operators outside the range 0 to 31 (or
whatever, depending on the size of the other operand) are based on that
principle.

But while that was done to allow more code that previously was the
domain of assembly to now be written in C, it again does not make C an
assembler.

> 
> As one example, Fortran has the ISHFT function to perform bit
> shifting, which shifts left for a positive shift amount, right
> for a negative amount. Sometimes convenient, but not directly
> supported by most processors. ISHFT also allows the shift amount
> to equal the bit width of the operand, again requiring extra tests.
> 
> So, yes, C isn't an assembler, but often enough it doesn't promiss
> more than the hardware provides.

In my experience (mostly smaller systems), C provides a great deal more
than the hardware.  When I work on an 8-bit cpu, I can write code for
shifting a 32-bit integer by multiple steps - knowing the compiler will
build the loops and library calls needed to make it work.

C is not different in principle from any other programming language.
All you are saying is that it is a fairly low-level language, which is true.

<snip>

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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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