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/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __UTIL_ATTR_H__
#define __UTIL_ATTR_H__
/* for old gcc releases that don't have the feature test macro __has_attribute */
#ifndef __has_attribute
#define __has_attribute(x) 0
#endif
#ifndef _UNUSED_
#if __has_attribute(unused) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
/** gcc attribute used on function parameters so that it does not emit
* warnings about them being unused. **/
# define _UNUSED_ __attribute__ ((unused))
#else
# define _UNUSED_
#endif
#endif
#ifndef UNUSED
#define UNUSED(param) param _UNUSED_
#endif
#ifndef _DEPRECATED_
#if __has_attribute(deprecated) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
#define _DEPRECATED_ __attribute__ ((deprecated))
#else
#define _DEPRECATED_
#endif
#endif
#ifndef _WARN_UNUSED_RESULT_
#if __has_attribute(warn_unused_result) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
#define _WARN_UNUSED_RESULT_ __attribute__ ((warn_unused_result))
#else
#define _WARN_UNUSED_RESULT_
#endif
#endif
#ifndef _NORETURN_
#if __has_attribute(noreturn) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
#define _NORETURN_ __attribute__ ((noreturn))
#else
#define _NORETURN_
#endif
#endif
#ifndef _PURE_
#if __has_attribute(pure) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
#define _PURE_ __attribute__((pure))
#else
#define _PURE_
#endif
#endif
#ifndef NONNULL
#if __has_attribute(nonnull) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
#define NONNULL(param) param __attribute__((nonnull))
#else
#define NONNULL(param) param
#endif
#endif
#ifndef PRINTF_ATTRIBUTE
#if __has_attribute(format) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
/** Use gcc attribute to check printf fns. a1 is the 1-based index of
* the parameter containing the format, and a2 the index of the first
* argument. Note that some gcc 2.x versions don't handle this
* properly **/
#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
#else
#define PRINTF_ATTRIBUTE(a1, a2)
#endif
#endif
#ifndef FORMAT_ATTRIBUTE
#if __has_attribute(format) || ( (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1 ) )
/** Use gcc attribute to check printf fns. a1 is argument to format()
* in the above macro. This is needed to support Heimdal's printf
* decorations. Note that some gcc 2.x versions don't handle this
* properly. **/
#define FORMAT_ATTRIBUTE(a) __attribute__ ((format a))
#else
#define FORMAT_ATTRIBUTE(a)
#endif
#endif
#endif /* __UTIL_ATTR_H__ */
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