Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!ontek!mikey
From: mikey@ontek.com (Interplanetary Krill)
Newsgroups: comp.lang.c
Subject: Re: Array bounds checking with C????
Message-ID: <1340@ontek.com>
Date: 5 Sep 90 23:12:03 GMT
References: <MEISSNER.90Aug31102636@osf.osf.org> <DAVEG.90Aug31224630@near.cs.caltech.edu> <1589@redsox.bsw.com>
Organization: Ontek Corporation -- Laguna Hills, California
Lines: 18

In comp.lang.c, campbell@redsox.bsw.com (Larry Campbell) writes:
| Are there actually any current compilers out there that are so stupid 
| that they generate substantially different code for the following two 
| code fragments? 
| 
|     /* Fragment 1 */
|     for (p = array; p < &array[ARRAY_SIZE]; p++)
| 	*p++ = '\0';
| 
|     /* Fragment 2 */
|     for (i = 0; i < ARRAY_SIZE; i++)
| 	array[i] = '\0';

  Fragment 2 is superior in that it initializes the entire
  array rather than just elements with even numbered indexes.
			__
		       /x \/|
		       \__/\|