Re: Buffer contents well-defined after fgets() reaches EOF ?

From	Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups	comp.lang.c
Subject	Re: Buffer contents well-defined after fgets() reaches EOF ?
Date	2025-02-18 20:17 -0800
Organization	A noiseless patient Spider
Message-ID	<86mseiy3er.fsf@linuxsc.com> (permalink)
References	(6 earlier) <20250210124911.00006b31@yahoo.com> <86ldu9zxkb.fsf@linuxsc.com> <20250214165108.00002984@yahoo.com> <864j0vyxj3.fsf@linuxsc.com> <20250215200856.00007131@yahoo.com>

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Michael S <already5chosen@yahoo.com> writes:

> On Sat, 15 Feb 2025 08:37:20 -0800
> Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:
[...]

>> Clearly using fgets() is problematic when the input stream might
>> contain null characters.  To me it seems obvious that the original
>> implementors expected that fgets() would not be used in such cases,
>> perhaps with the less severe restriction that the presence of
>> embedded nulls could be detected and simply rejected as bad input,
>> much the same as overly long lines or a final line without a
>> terminating newline character.
>
> My impression is that they didn't spend much time thinking.

I have no idea how much time was spent designing the fgets()
interface, nor do I think it's important to know.  I understand the
limitations of fgets() and don't mind using it in circumstances
where it provides a net positive value.

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Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-09 06:59 +0100
  Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-09 06:23 +0000
  Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-08 22:23 -0800
    Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-08 23:12 -0800
      Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-09 23:52 +0000
        Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-09 17:06 -0800
          Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-09 17:22 -0800
            Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-10 12:49 +0200
              Re: Buffer contents well-defined after fgets() reaches EOF ? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-02-13 07:14 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-14 16:51 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? scott@slp53.sl.home (Scott Lurndal) - 2025-02-14 15:10 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-14 17:23 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? scott@slp53.sl.home (Scott Lurndal) - 2025-02-14 16:46 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-14 17:28 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-14 17:22 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-02-14 11:03 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-14 19:34 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-15 20:06 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? scott@slp53.sl.home (Scott Lurndal) - 2025-02-14 20:01 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-14 20:51 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-15 19:02 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-15 19:29 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-16 04:29 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-02-16 01:04 -0500
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-16 07:37 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-16 18:59 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-16 10:48 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-16 19:14 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-17 11:54 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-16 07:32 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-16 11:05 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-16 19:25 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-16 19:21 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? scott@slp53.sl.home (Scott Lurndal) - 2025-02-16 20:26 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-15 19:41 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-15 20:29 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-16 04:33 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-14 20:23 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-02-14 14:38 -0500
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-14 21:02 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-15 19:53 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-16 04:48 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-02-15 08:37 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-15 20:08 +0200
                Re: Buffer contents well-defined after fgets() reaches EOF ? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-02-18 20:17 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-21 05:58 +0000
            Re: Buffer contents well-defined after fgets() reaches EOF ? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-02-15 08:12 -0800
          Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-10 02:44 +0100
          Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-10 03:28 +0000
            Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-09 20:11 -0800
              Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-10 07:21 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? scott@slp53.sl.home (Scott Lurndal) - 2025-02-10 16:39 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-02-10 13:58 -0500
                Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-11 01:03 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-02-10 22:33 -0500
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-11 03:42 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-11 04:54 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-02-11 13:07 -0500
                Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-11 21:47 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-02-11 17:44 -0500
                Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-12 06:16 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-02-11 13:59 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-02-11 17:58 -0500
                Re: Buffer contents well-defined after fgets() reaches EOF ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-02-11 15:40 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-02-17 21:11 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-10 22:32 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-10 22:38 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-11 12:04 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-02-13 07:29 -0800
    Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-09 08:13 +0100
      Re: Buffer contents well-defined after fgets() reaches EOF ? Michael S <already5chosen@yahoo.com> - 2025-02-09 12:50 +0200
        Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-09 18:29 +0100
          Re: Buffer contents well-defined after fgets() reaches EOF ? Mark Bourne <nntp.mbourne@spamgourmet.com> - 2025-02-10 21:57 +0000
      Re: Buffer contents well-defined after fgets() reaches EOF ? Andrey Tarasevich <noone@noone.net> - 2025-02-09 07:27 -0800
        Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-09 18:34 +0100
          Re: Buffer contents well-defined after fgets() reaches EOF ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-02-09 16:57 -0800
            Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-10 02:35 +0100
              Re: Buffer contents well-defined after fgets() reaches EOF ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-02-09 20:37 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-10 07:08 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-02-09 22:41 -0800
                Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-10 07:54 +0100
                Re: Buffer contents well-defined after fgets() reaches EOF ? Mark Bourne <nntp.mbourne@spamgourmet.com> - 2025-02-10 23:22 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-02-11 00:59 +0000
                Re: Buffer contents well-defined after fgets() reaches EOF ? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-02-17 02:50 +0000
      Re: Buffer contents well-defined after fgets() reaches EOF ? Mark Bourne <nntp.mbourne@spamgourmet.com> - 2025-02-10 22:57 +0000
        Re: Buffer contents well-defined after fgets() reaches EOF ? Mark Bourne <nntp.mbourne@spamgourmet.com> - 2025-02-10 23:24 +0000
  Re: Buffer contents well-defined after fgets() reaches EOF ? Ben Bacarisse <ben@bsb.me.uk> - 2025-02-10 01:32 +0000
    Re: Buffer contents well-defined after fgets() reaches EOF ? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-02-10 02:40 +0100

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