From: "Christopher Li" <sparse@chrisli.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>, linux-sparse@vger.kernel.org
Subject: Re: Casting away noderef and address spaces?
Date: Mon, 22 Dec 2008 13:23:47 -0800 [thread overview]
Message-ID: <70318cbf0812221323s53119420qcdb2ee0542185667@mail.gmail.com> (raw)
In-Reply-To: <20081222205750.GK28946@ZenIV.linux.org.uk>
On Mon, Dec 22, 2008 at 12:57 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
> The right solution is
> (*(typeof(v) __attribute__((address_space(0), force)) *)(&v))
>
> Cast there will take a pointer to type of V and force-cast it to pointer to
> unqualified type of V. *(cast)&v will do the obvious thing. Will trim
> both the AS and noderef.
Thanks, that is much better. However sparse don't know how to handle it yet.
/tmp/typeof.c:11:64: warning: incorrect type in assignment (invalid types)
/tmp/typeof.c:11:64: expected unknown type 11 <noident>
/tmp/typeof.c:11:64: got int
classify_type does not know how to handle SYM_TYPEOF yet.
Let me see if I can make it to work.
Chris
next prev parent reply other threads:[~2008-12-22 21:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-22 5:36 Casting away noderef and address spaces? Rusty Russell
2008-12-22 20:06 ` Christopher Li
2008-12-22 20:57 ` Al Viro
2008-12-22 21:23 ` Christopher Li [this message]
2008-12-22 21:39 ` Al Viro
2008-12-22 22:33 ` Christopher Li
2008-12-22 22:42 ` Harvey Harrison
2008-12-22 22:57 ` Sam Ravnborg
2008-12-22 23:53 ` Alexey Zaytsev
2008-12-22 23:55 ` Johannes Berg
2008-12-23 0:20 ` Alexey Zaytsev
2008-12-23 0:35 ` Johannes Berg
2008-12-23 0:37 ` Johannes Berg
2008-12-23 1:25 ` Christopher Li
2008-12-23 9:59 ` Johannes Berg
2008-12-24 8:34 ` Christopher Li
2008-12-23 2:14 ` Rusty Russell
2008-12-23 3:02 ` Christopher Li
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