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	2023-07-25 05:35 -0700
Organization	A noiseless patient Spider
Message-ID	<86lef4rwx9.fsf@linuxsc.com> (permalink)
References	<20230524162836.172@kylheku.com> <86cz0mzemm.fsf@linuxsc.com> <9x2cnQDaqOkRtyf5nZ2dnZeNn_di4p2d@giganews.com> <20230721215906.639@kylheku.com>

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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.
>>
>> Note that Tim's critique or restrict in May 2023 is very similar
>> to the critique of the similar noalias proposal in messageid
>> <7753@alice.UUCP> by someone highly respected in this group.
>> That was posted 35 years ago.
>
> That someone was even opposed to const, for some good reasons.
>
> The present issue reveals a design flaw in the C type system:
> that qualifiers on function parameters don't matter.
>
> They should, though.
>
>   void f(const int);
>   void f(int);
>
> should be incomaptible and diagnosed!

A foolish consistency is the hobgoblin of little minds.

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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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