From: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
To: Al Viro <viro-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
Cc: Matthew Wilcox <matthew-Ztpu424NOJ8@public.gmane.org>,
Linus Torvalds
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Linux Kernel Mailing List
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Linux Arch Mailing List
<linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
David Brownell
<dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: [PATCH 1/2] Add C99-style constructor macros for specific-sized integers
Date: Sun, 02 Mar 2008 22:12:37 -0800 [thread overview]
Message-ID: <47CB96D5.3030509@zytor.com> (raw)
In-Reply-To: <20080303062007.GY27894-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
Al Viro wrote:
> On Sun, Mar 02, 2008 at 08:43:22PM -0800, H. Peter Anvin wrote:
>>>> +#define S64_C(x) x ## LL
>>>> +#define U64_C(x) x ## ULL
>>> but can't we use the latter for all arches?
>>>
>> You really don't want to, as the whole point is that you want it to
>> match what u64/s64 is defined as, in order to avoid spurious warnings.
>
> Excuse me, in which contexts? Where does replacement of explicitly long
> constant with explicitly long long one generate warnings on a host that has
> range(long) equal to range(long long)?
printf, for example.
-hpa
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WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa@zytor.com>
To: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Matthew Wilcox <matthew@wil.cx>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Arch Mailing List <linux-arch@vger.kernel.org>,
David Brownell <dbrownell@users.sourceforge.net>
Subject: Re: [PATCH 1/2] Add C99-style constructor macros for specific-sized integers
Date: Sun, 02 Mar 2008 22:12:37 -0800 [thread overview]
Message-ID: <47CB96D5.3030509@zytor.com> (raw)
Message-ID: <20080303061237.83tsKXQ2Cz-HFEY_0LOPA6WLpS8SGKLlTthDbqyg6sU@z> (raw)
In-Reply-To: <20080303062007.GY27894@ZenIV.linux.org.uk>
Al Viro wrote:
> On Sun, Mar 02, 2008 at 08:43:22PM -0800, H. Peter Anvin wrote:
>>>> +#define S64_C(x) x ## LL
>>>> +#define U64_C(x) x ## ULL
>>> but can't we use the latter for all arches?
>>>
>> You really don't want to, as the whole point is that you want it to
>> match what u64/s64 is defined as, in order to avoid spurious warnings.
>
> Excuse me, in which contexts? Where does replacement of explicitly long
> constant with explicitly long long one generate warnings on a host that has
> range(long) equal to range(long long)?
printf, for example.
-hpa
next prev parent reply other threads:[~2008-03-03 6:12 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-03 0:09 [PATCH 1/2] Add C99-style constructor macros for specific-sized integers H. Peter Anvin
2008-03-03 0:09 ` H. Peter Anvin
[not found] ` <4a8566f54ff84f498c5c0c0340076c296b1840e6-TYXNXmPMDn57u0wkx6qpVYSLwOllVvif@public.gmane.org>
2008-03-03 0:09 ` [PATCH 2/2] Use U64_C() instead of casts in kernel/time.c H. Peter Anvin
2008-03-03 0:09 ` H. Peter Anvin
2008-03-03 2:38 ` [PATCH 1/2] Add C99-style constructor macros for specific-sized integers Matthew Wilcox
2008-03-03 2:38 ` Matthew Wilcox
[not found] ` <20080303023851.GF24386-6jwH94ZQLHl74goWV3ctuw@public.gmane.org>
2008-03-03 4:43 ` H. Peter Anvin
2008-03-03 4:43 ` H. Peter Anvin
[not found] ` <47CB81EA.8070802-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2008-03-03 6:20 ` Al Viro
2008-03-03 6:20 ` Al Viro
[not found] ` <20080303062007.GY27894-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2008-03-03 6:12 ` H. Peter Anvin [this message]
2008-03-03 6:12 ` H. Peter Anvin
[not found] ` <47CB96D5.3030509-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2008-03-03 6:32 ` Al Viro
2008-03-03 6:32 ` Al Viro
[not found] ` <20080303063216.GA27894-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2008-03-03 6:28 ` H. Peter Anvin
2008-03-03 6:28 ` H. Peter Anvin
2008-03-03 3:20 ` Segher Boessenkool
2008-03-03 3:20 ` Segher Boessenkool
2008-03-03 4:14 ` David Brownell
[not found] ` <200803022014.11535.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-03-03 4:50 ` H. Peter Anvin
2008-03-03 4:50 ` H. Peter Anvin
[not found] ` <7e0381d9932a37ad78f0c38b2a3c6a03-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2008-03-03 4:45 ` H. Peter Anvin
2008-03-03 4:45 ` H. Peter Anvin
[not found] ` <47CB826A.7000202-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2008-03-03 20:23 ` Segher Boessenkool
2008-03-03 20:23 ` Segher Boessenkool
2008-03-03 10:57 ` David Howells
2008-03-03 10:57 ` David Howells
[not found] ` <8260.1204541852-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-03-03 11:43 ` Russell King
2008-03-03 11:43 ` Russell King
[not found] ` <20080303114310.GA28139-f404yB8NqCZvn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2008-03-03 12:15 ` David Howells
2008-03-03 12:15 ` David Howells
2008-03-03 12:40 ` Sam Ravnborg
2008-03-03 12:40 ` Sam Ravnborg
[not found] ` <20080303124050.GA24841-QabhHTsIXMSnlFQ6Q1D1Y0B+6BGkLq7r@public.gmane.org>
2008-03-03 17:03 ` H. Peter Anvin
2008-03-03 17:03 ` H. Peter Anvin
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