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-Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter re
From: |
Eric Blake |
Subject: |
-Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression] |
Date: |
Wed, 3 Jan 2018 09:07:54 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 |
On 01/03/2018 04:53 AM, Tim Rühsen wrote:
> ... here is another one in lib/cdef.h occurring with a MinGW build.
>
>
> In file included from ../lib/libc-config.h:149:0,
> from ../lib/glob.h:24,
> from utils.c:35:
> ../lib/cdefs.h:298:6: warning: "__USE_FORTIFY_LEVEL" is not defined,
> evaluates to 0 [-Wundef]
> # if __USE_FORTIFY_LEVEL > 0
> ^~~~~~~~~~~~~~~~~~~
>
How come it doesn't trigger a warning in lib/stdio.in.h? At any rate,
-Wundef is slightly different than -Wunused-parameter, but I _do_ see
cases where we have catered to it in .h files:
lib/cdefs.h:#if defined __GNUC__ && __GNUC__ >= 2
lib/file-set.h:#if defined __GNUC__ && ((__GNUC__ == 3 && __GNUC_MINOR__
>= 3) || __GNUC__ > 3)
lib/gettext.h:#if defined ENABLE_NLS && ENABLE_NLS
lib/obstack.h:# if !defined __GNUC_MINOR__ || __GNUC__ * 1000 +
__GNUC_MINOR__ < 2008
and since cdefs.h is in that group, feel free to submit a patch to have
the use of __USE_FORTIFY_LEVEL pacify -Wundef.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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- Re: [PATCH] Avoid one "parameter unused" warnings., (continued)
Re: [PATCH] Avoid one "parameter unused" warnings., Eric Blake, 2018/01/02
- [PATCH v2] stat-time: silence -Wunused-parameter regression, Eric Blake, 2018/01/02
- Re: [PATCH v2] stat-time: silence -Wunused-parameter regression, Jim Meyering, 2018/01/02
- Re: [PATCH v2] stat-time: silence -Wunused-parameter regression, Paul Eggert, 2018/01/02
- Re: [PATCH v2] stat-time: silence -Wunused-parameter regression, Tim Rühsen, 2018/01/03
- -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression],
Eric Blake <=
- Re: -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression], Tim Rühsen, 2018/01/03
- Re: -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression], Eric Blake, 2018/01/03
- Re: -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression], Paul Eggert, 2018/01/03
- Re: -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression], Tim Rühsen, 2018/01/04
- Re: -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression], Bruno Haible, 2018/01/04
- Re: -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression], Eric Blake, 2018/01/04
- Re: -Wundef in *.h [was: [PATCH v2] stat-time: silence -Wunused-parameter regression], Tim Rühsen, 2018/01/04
Re: [PATCH] Avoid one "parameter unused" warnings., Bruno Haible, 2018/01/01