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From: karl@ima.isc.com (Karl Heuer)
Newsgroups: comp.lang.c
Subject: Re: Declaring array. Is this ok ?
Message-ID: <1990Nov14.013549.14437@dirtydog.ima.isc.com>
Date: 14 Nov 90 01:35:49 GMT
References: <APS.90Nov12074527@kaarne.tut.fi>
Sender: news@dirtydog.ima.isc.com (NEWS ADMIN)
Reply-To: karl@ima.isc.com (Karl Heuer)
Organization: Interactive Systems
Lines: 14

In article <APS.90Nov12074527@kaarne.tut.fi> aps@tut.fi (Suntioinen Ari) writes:
>Gcc seems to accept both.

The default configuration of gcc includes several extensions over ANSI C.
Use "gcc -ansi -pedantic" to test this sort of thing.
	$ cat try.c
	int foo(int n) { int a[n]; }
	$ gcc -c try.c
	$ gcc -ansi -pedantic -c try.c
	try.c: In function foo:
	try.c:1: warning: ANSI C forbids variable-size array `a'
	$ exit

Karl W. Z. Heuer (karl@ima.isc.com or uunet!ima!karl), The Walking Lint