Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!pilchuck!dataio!bright
From: bright@Data-IO.COM (Walter Bright)
Newsgroups: comp.lang.c
Subject: Re: Compilers and programming style (was Re: A question of style)
Message-ID: <2283@dataio.Data-IO.COM>
Date: 8 Jan 90 19:58:43 GMT
References: <1989Dec22.100135.2903@gdt.bath.ac.uk> <4367@rtech.rtech.com> <1989Dec31.153241.16479@gdt.bath.ac.uk> <649@codonics.COM> <1990Jan5.100042.26760@gdt.bath.ac.uk>
Reply-To: bright@dataio.Data-IO.COM (Walter Bright)
Organization: Data I/O Corporation; Redmond, WA
Lines: 10

int *p;
*p;		/* has no side effects and should be optimized away,	*/
		/* a warning is justified here as it is probably a	*/
		/* mistake						*/

(void) *p;	/* has no side effects and should be optimized away,	*/
		/* no warning should be generated			*/

volatile int *p;
*p;		/* has side effects and must not be optimized away	*/