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88be24c279
The comparisons that look like
#if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 )
fail if __GNUC_MINOR__ is 0. The intended comparison is something
more like
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
However, given that:
* these checks are really trying to test the presence of
__attribute__,
* there are now credible compilers that are not GCC, which have
__attribute__ but might not be good at emulating __GNUC__
numbers, and
* we really face little risk of running into GCC 2.95
* we have a HAVE___ATTRIBUTE__ check in ./configure
let's not do the version comparisons.
(Untested on GCC 2.95, GCC 3.0 and GCC 3.1).
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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Samba utility functions
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Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __UTIL_ATTR_H__
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#define __UTIL_ATTR_H__
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#ifndef _UNUSED_
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#ifdef __GNUC__
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/** gcc attribute used on function parameters so that it does not emit
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* warnings about them being unused. **/
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# define _UNUSED_ __attribute__ ((unused))
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#else
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# define _UNUSED_
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/** Feel free to add definitions for other compilers here. */
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#endif
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#endif
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#ifndef UNUSED
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#define UNUSED(param) param _UNUSED_
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#endif
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#ifndef _DEPRECATED_
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#ifdef HAVE___ATTRIBUTE__
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#define _DEPRECATED_ __attribute__ ((deprecated))
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#else
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#define _DEPRECATED_
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#endif
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#endif
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#ifndef _WARN_UNUSED_RESULT_
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#ifdef HAVE___ATTRIBUTE__
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#define _WARN_UNUSED_RESULT_ __attribute__ ((warn_unused_result))
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#else
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#define _WARN_UNUSED_RESULT_
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#endif
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#endif
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#ifndef _NORETURN_
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#ifdef HAVE___ATTRIBUTE__
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#define _NORETURN_ __attribute__ ((noreturn))
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#else
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#define _NORETURN_
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#endif
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#endif
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#ifndef _PURE_
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#ifdef HAVE___ATTRIBUTE__
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#define _PURE_ __attribute__((pure))
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#else
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#define _PURE_
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#endif
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#endif
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#ifndef NONNULL
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#ifdef HAVE___ATTRIBUTE__
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#define NONNULL(param) param __attribute__((nonnull))
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#else
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#define NONNULL(param) param
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#endif
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#endif
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#ifndef PRINTF_ATTRIBUTE
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#ifdef HAVE___ATTRIBUTE__
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/** Use gcc attribute to check printf fns. a1 is the 1-based index of
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* the parameter containing the format, and a2 the index of the first
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* argument. Note that some gcc 2.x versions don't handle this
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* properly **/
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#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
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#else
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#define PRINTF_ATTRIBUTE(a1, a2)
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#endif
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#endif
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#ifndef FORMAT_ATTRIBUTE
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#ifdef HAVE___ATTRIBUTE__
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/** Use gcc attribute to check printf fns. a1 is argument to format()
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* in the above macro. This is needed to support Heimdal's printf
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* decorations. Note that some gcc 2.x versions don't handle this
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* properly. **/
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#define FORMAT_ATTRIBUTE(a) __attribute__ ((format a))
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#else
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#define FORMAT_ATTRIBUTE(a)
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#endif
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#endif
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#endif /* __UTIL_ATTR_H__ */
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