Message-ID:	<41FBBB1B17AFD4119ECE000347088836F5A916@wbnsmail.gtl.com>
From:	Rodney Leadbeater <rodney DOT leadbeater AT convergys DOT com>
To:	"'djgpp-workers AT delorie DOT com'" <djgpp-workers AT delorie DOT com>
Subject:	Array declarations allow non-constant expressions for dimensionin
	g
Date:	Thu, 28 Jun 2001 10:25:30 +0100
MIME-Version:	1.0
X-Mailer:	Internet Mail Service (5.5.2650.21)
Reply-To:	djgpp-workers AT delorie DOT com

Hi

Why does gcc allow the following? I was amazed that it allowed the
following. Very dangerous!!!

#include <stdio.h>

int i = 20 ;
int j ;

int
main (int argc, char **argv)
{
int a_i [i] ;    // should not be allowed because of the danger
(traditionally use ma
lloc!)
int a_j [j] ;    // very dangerous

        printf ("sizeof a_i = %d\n", sizeof (a_i)) ;
        printf ("sizeof a_j = %d\n", sizeof (a_j)) ;
        return 0 ;
}


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