Re: What is the point of restrict in fopen?

From	Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups	comp.std.c
Subject	Re: What is the point of restrict in fopen?
Date	2023-08-04 20:15 -0700
Organization	A noiseless patient Spider
Message-ID	<86sf8yface.fsf@linuxsc.com> (permalink)
References	(1 earlier) <86cz0mzemm.fsf@linuxsc.com> <9x2cnQDaqOkRtyf5nZ2dnZeNn_di4p2d@giganews.com> <20230721215906.639@kylheku.com> <86lef4rwx9.fsf@linuxsc.com> <20230725120541.589@kylheku.com>

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Kaz Kylheku <864-117-4973@kylheku.com> writes:

> On 2023-07-25, Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:
>
>> Kaz Kylheku <864-117-4973@kylheku.com> writes:
>>
>>> On 2023-07-21, Jakob Bohm <jb-usenet@wisemo.com.invalid> wrote:
>>>
>>>> On 2023-07-20 19:17, Tim Rentsch wrote:
>>>>
>>>>> Kaz Kylheku <864-117-4973@kylheku.com> writes:
>>>>>
>>>>>> I've noticed that both arguments of fopen are
>>>>>> restrict-qualified.
>>>>>
>>>>> What I think you mean is that the arguments given in the
>>>>> prototype declaration in the C standard are qualified with
>>>>> the 'restrict' keyword.
>>>>>
>>>>> Note that this form of declaration has no effect on the
>>>>> semantics of the function.  The function declaration, and its
>>>>> semantics, are just the same as if the uses of 'restrict'
>>>>> were removed.

[...]

> Here is a realistic plan.
>
> Phase 1:
>
> [...]
>
> Phase 2:
>
> [...]
>
> Phase 3:
>
> [...]

Here is a simpler and better idea.

Add a Recommended Practice that compilers provide an
option to produce a diagnostic when a function
parameter is restrict-qualified in the function
definition but is not restrict-qualified in any other
declaration of the function in the same compilation
unit.

And nothing more than that.

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Thread

What is the point of restrict in fopen? Kaz Kylheku <864-117-4973@kylheku.com> - 2023-05-24 23:41 +0000
  Re: What is the point of restrict in fopen? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-07-20 10:17 -0700
    Re: What is the point of restrict in fopen? Jakob Bohm <jb-usenet@wisemo.com.invalid> - 2023-07-21 08:55 +0200
      Re: What is the point of restrict in fopen? Kaz Kylheku <864-117-4973@kylheku.com> - 2023-07-22 05:37 +0000
        Re: What is the point of restrict in fopen? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-07-25 05:35 -0700
          Re: What is the point of restrict in fopen? Kaz Kylheku <864-117-4973@kylheku.com> - 2023-07-25 19:33 +0000
            Re: What is the point of restrict in fopen? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-08-04 20:15 -0700
      Re: What is the point of restrict in fopen? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-07-25 05:37 -0700

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