From: "David S. Miller" <davem@redhat.com>
To: =?ISO-8859-1?Q?Sarda=F1ons@pizda.ninka.net,
"?= Eliel" <Eliel.Sardanons@philips.edu.ar>
Cc: "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: asm/unistd.h
Date: Thu, 5 Apr 2001 06:07:30 -0700 (PDT) [thread overview]
Message-ID: <15052.28178.701561.756926@pizda.ninka.net> (raw)
In-Reply-To: <A0C675E9DC2CD411A5870040053AEBA0284170@MAINSERVER>
In-Reply-To: <A0C675E9DC2CD411A5870040053AEBA0284170@MAINSERVER>
Sardañons@pizda.ninka.net, Eliel writes:
> I'm taking a look at the linux code and I don't understand how do you
> programm...mmm (?) may be i'm a stupid why in include/asm/unistd.h in some
> macros you use this:
Two reasons:
1) Empty statements give a warning from the compiler so
this is why you see "#define FOO do { } while(0)"
2) It gives you a basic block in which to declare local
variables.
Later,
David S. Miller
davem@redhat.com
next prev parent reply other threads:[~2001-04-05 13:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-05 12:58 asm/unistd.h Sardañons, Eliel
2001-04-05 13:06 ` asm/unistd.h Bart Trojanowski
2001-04-05 13:12 ` asm/unistd.h Tim Waugh
2001-04-05 14:26 ` asm/unistd.h Joseph Carter
2001-04-05 14:35 ` asm/unistd.h Bart Trojanowski
2001-04-05 14:35 ` asm/unistd.h Stephen Thomas
2001-04-05 14:45 ` asm/unistd.h Andreas Schwab
2001-04-05 17:38 ` asm/unistd.h J . A . Magallon
2001-04-05 13:07 ` David S. Miller [this message]
2001-04-05 13:13 ` asm/unistd.h Ben Collins
2001-04-05 15:23 asm/unistd.h Steve Grubb
2001-04-05 15:41 ` asm/unistd.h Bart Trojanowski
2001-04-05 15:45 ` asm/unistd.h David S. Miller
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