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Date: Mon, 13 Sep 2004 06:40:35 GMT
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To: freebsd-bugs@FreeBSD.org
From: Dan Lukes <dan@obluda.cz>
Subject: Re: bin/71628: [PATCH] cleanup of the usr.sbin/rpcbind code
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The following reply was made to PR bin/71628; it has been noted by GNATS.

From: Dan Lukes <dan@obluda.cz>
To: Giorgos Keramidas <keramida@freebsd.org>
Cc: alfred@freebsd.org, bug-followup@freebsd.org
Subject: Re: bin/71628: [PATCH] cleanup of the usr.sbin/rpcbind code
Date: Mon, 13 Sep 2004 08:33:19 +0200

 Giorgos Keramidas wrote:
 
 > This initialization
 > 	char *foo = foo;
 > 
 > is not cheaper than this one:
 > 	char *foo = NULL;
 
 	Not true. The first one is optimized out by GCC even if O level is 0.
 Remember - it's hack/special construct (a special in-band way to tell
 the compiler something special) - it's not real assignment.
 
 	Check it by your favorite disassembler. I did it.
 
 > This will catch possible bugs (current or future) in the rest of the code, so
 > it's a lot safer.
 
 	I agree with it.
 					Dan
 
 
 -- 
 Dan Lukes,  SISAL, MFF UK  tel: +420 2 21914205, fax: +420 2 21914206
 AKA: dan@obluda.cz, dan@freebsd.cz, dan@kolej.mff.cuni.cz, dan@fio.cz