From: Roland Dreier <rdreier@cisco.com>
To: David Miller <davem@davemloft.net>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org,
openib-general@openib.org, tom@opengridcomputing.com
Subject: Re: [PATCH] Avoid truncating to 'long' in ALIGN() macro
Date: Sat, 25 Nov 2006 14:56:22 -0800 [thread overview]
Message-ID: <adaodqv5e5l.fsf@cisco.com> (raw)
In-Reply-To: <20061124.220746.57445336.davem@davemloft.net> (David Miller's message of "Fri, 24 Nov 2006 22:07:46 -0800 (PST)")
> Perhaps a better way to fix this is to use
> typeof() like other similar macros do.
I tried doing
#define ALIGN(x,a) \
({ \
typeof(x) _a = (a); \
((x) + _a - 1) & ~(_a - 1); \
})
but that won't compile because of <net/neighbour.h>:
unsigned char ha[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))];
gcc says:
/scratch/Ksrc/linux-merge/include/net/neighbour.h:104: error: braced-group within expression allowed only inside a function
I guess that could be fixed by changing that declaration but now this
is starting to feel like early 2.6.20 material.
- R.
next prev parent reply other threads:[~2006-11-25 22:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-25 5:40 [PATCH] Avoid truncating to 'long' in ALIGN() macro Roland Dreier
2006-11-25 6:07 ` David Miller
2006-11-25 22:56 ` Roland Dreier [this message]
2006-11-25 23:05 ` David Miller
2006-11-25 23:09 ` Roland Dreier
2006-11-26 0:41 ` Andrew Morton
2006-11-26 19:09 ` Roland Dreier
2006-11-26 19:10 ` Roland Dreier
2006-11-26 19:17 ` Andrew Morton
2006-11-26 20:06 ` Roland Dreier
2006-11-26 20:11 ` Linus Torvalds
2006-11-26 20:26 ` Roland Dreier
2006-11-26 21:06 ` Jörn Engel
2006-11-26 22:20 ` Linus Torvalds
2006-11-27 4:41 ` Al Viro
2006-11-26 1:10 ` Al Viro
2006-11-26 1:17 ` Roland Dreier
2006-11-26 1:25 ` Al Viro
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