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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: Preprocessor Overheads
Date: Thu, 02 Feb 2017 10:19:08 -0800
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BartC <bc@freeuk.com> writes:
> On 02/02/2017 09:30, David Brown wrote:
[...]
>> zero-length arrays are not valid in C, so don't try to make them.  You
>> can't declare an array of one length (zero or anything else) and then
>> "set it up" later with a different size.
>
> Yes you can. First declare this:
>
>    int array[] = {};

The empty initializer is invalid (it's actually a syntax error, see the
syntax in 6.7.9), and any conforming compiler must at least warn about
it.  Some compilers may support it as an extension.  You're free to
depend on that extension if you choose to do so, but you should be clear
(to yourself and to the rest of us) that you're doing something outside
standard C.

[...]

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"