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From: "H. Peter Anvin" <hpa@zytor.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Linus Torvalds <torvalds@osdl.org>,
	Jamie Lokier <jamie@shareable.org>,
	Nikita Danilov <Nikita@Namesys.COM>,
	linux-kernel@vger.kernel.org
Subject: Re: const versus __attribute__((const))
Date: Tue, 09 Dec 2003 07:42:47 -0800	[thread overview]
Message-ID: <3FD5ED77.6070505@zytor.com> (raw)
In-Reply-To: <200312091256.47414.arnd@arndb.de>

Arnd Bergmann wrote:
> 
> For reference, both gcc-3.3 and gcc-3.4 (snapshot) give produce the same assembly 
> as gcc-3.2 for your code, but give this warning:
> 
> test.c:6: warning: use of memory input without lvalue in asm operand 1 is deprecated
> test.c:7: warning: use of memory input without lvalue in asm operand 1 is deprecated
> 

In some ways, this is rather unfortunate, too.  What it really means is 
that the gcc "m" constraint is overloaded; it would have been better if 
they would have created a new modifier (say "*") for "must be lvalue."

	-hpa


  reply	other threads:[~2003-12-09 15:45 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-08 15:46 const versus __attribute__((const)) Arnd Bergmann
2003-12-08 17:50 ` H. Peter Anvin
2003-12-08 18:27   ` Nikita Danilov
2003-12-08 18:31     ` H. Peter Anvin
2003-12-09  2:59       ` Jamie Lokier
2003-12-09  3:21         ` H. Peter Anvin
2003-12-09  3:49           ` Jamie Lokier
2003-12-09  5:37             ` H. Peter Anvin
2003-12-09  7:26               ` Linus Torvalds
2003-12-09  7:40                 ` H. Peter Anvin
2003-12-09 11:56                   ` Arnd Bergmann
2003-12-09 15:42                     ` H. Peter Anvin [this message]
2003-12-09 16:44                       ` Linus Torvalds
2003-12-09 16:51                         ` H. Peter Anvin
2003-12-09 19:15                           ` Jamie Lokier
2003-12-09  7:19             ` Linus Torvalds
  -- strict thread matches above, loose matches on Subject: below --
2003-12-08  1:19 H. Peter Anvin
2003-12-08 12:32 ` Nikita Danilov

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