Date:	Sun, 9 Feb 2003 18:57:19 +0100
To:	djgpp AT delorie DOT com
Subject:	Re: allocating big chunks with djgpp
Message-ID:	<20030209175718.GA31356@sprite.fr.eu.org>
Mail-Followup-To:	djgpp AT delorie DOT com
References:	<b25thp$g512 AT imsp212 DOT netvigator DOT com> <200302091726 DOT h19HQxp16523 AT envy DOT delorie DOT com>
Mime-Version:	1.0
In-Reply-To:	<200302091726.h19HQxp16523@envy.delorie.com>
User-Agent:	Mutt/1.5.3i
From:	Jeremie Koenig <sprite AT sprite DOT fr DOT eu DOT org>
Reply-To:	djgpp AT delorie DOT com
Errors-To:	nobody AT delorie DOT com
X-Mailing-List:	djgpp AT delorie DOT com
X-Unsubscribes-To:	listserv AT delorie DOT com

On Sun, Feb 09, 2003 at 12:26:59PM -0500, DJ Delorie wrote:

> 	char buffer[30000][81];
Ok

> 	int foo()
> 	{
> 	  static char buffer[30000][81];
Ok, too.

> 	  char **buffer2 = malloc(30000 * 81);
Bad. buffer2[x] will be an uninitialized pointer. Even if you want that
(you obviously don't for such purposes) you should include
sizeof(buffer2) as a factor of malloc() parameter.

The right way, IMHO :
	  
	  char (*buffer)[81] = malloc(sizeof(buffer) * 30000);
	  
Which i think will actually work the same as the two above.

-- 
Jeremie Koenig <sprite AT sprite DOT fr DOT eu DOT org>

- Raw text -