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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: Array-as-pointer Syntax
Date: Thu, 28 Mar 2019 13:57:45 -0700
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James Kuyper <jameskuyper@alumni.caltech.edu> writes:
> On Thursday, March 28, 2019 at 1:04:43 PM UTC-4, David T. Ashley wrote:
[...]
> As an lvalue of array type, 'x' gets implicitly converted into a pointer
> to the first element of that array, x[0], in most contexts (6.3.2.1p3),
> including the following one:
>
>>    memset(x, 0, sizeof(x));
>> 
>> and
>
> However, there are four exceptions to that rule, and &x is one of them
> (the other three are as the operands of sizeof or _Alignof, or as a
> string literal used to initialize an array of character type). This
> results in a pointer to the entire array:
>
>>    memset(&x, 0, sizeof(x));

There are three exceptions, not four.  _Alignof (for unclear reasons)
can only be applied to a parenthesized type name, not to an expression.
Including _Alignof in the list of exceptions was an error in the N1570
draft, corrected in the published C11 standard.

[...]

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Will write code for food.
void Void(void) { Void(); } /* The recursive call of the void */