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Re: What is the meaning of array parameters?

From Michael S <already5chosen@yahoo.com>
Newsgroups comp.lang.c
Subject Re: What is the meaning of array parameters?
Date 2025-11-25 16:04 +0200
Organization A noiseless patient Spider
Message-ID <20251125160441.00003007@yahoo.com> (permalink)
References <10g4au7$jc8o$1@solani.org>

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On Tue, 25 Nov 2025 14:28:39 +0100
Philipp Klaus Krause <pkk@spth.de> wrote:

> Since C99 we have four types of array parameters:
> 
> []
> [assignment-expression]
> [static assignment-expression]
> [*]
> 
> But what is their meaning? They're all compatible, they all decay to 
> pointers anyway. Only to [static assignment-expression] does the 
> standard give a little bit of extra formal meaning, by making it UB
> when a too-short array is passed.
> 
> They exist, they are different types, but the standard does not give 
> them meaning (with the exception noted above). So people using them
> must have a motivation beyond what is explicitly stated in the
> standard, and thus an idea of what the meaning of these would or
> should be.
> 
> Philipp
> 

May be, The Standard could allow (or even recommend?) diagnostic for
code like below?
int foo(int prm[2])
{
  return prm[2];
}

Other than that, there is hardly any meaning.

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Thread

What is the meaning of array parameters? Philipp Klaus Krause <pkk@spth.de> - 2025-11-25 14:28 +0100
  Re: What is the meaning of array parameters? Michael S <already5chosen@yahoo.com> - 2025-11-25 16:04 +0200
  Re: What is the meaning of array parameters? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-11-25 13:25 -0800
  Re: What is the meaning of array parameters? Philipp Klaus Krause <pkk@spth.de> - 2025-11-27 10:34 +0100
  Re: What is the meaning of array parameters? antispam@fricas.org (Waldek Hebisch) - 2025-11-29 22:28 +0000
    Re: What is the meaning of array parameters? James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-11-29 22:01 -0500
  Re: What is the meaning of array parameters? Andrey Tarasevich <noone@noone.net> - 2025-12-05 06:01 -0800
  Re: What is the meaning of array parameters? Lynn McGuire <lynnmcguire5@gmail.com> - 2025-12-05 15:36 -0600

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