/usr/include/avahi-common/gccmacro.h is in libavahi-common-dev 0.6.32~rc+dfsg-1ubuntu2.3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | #ifndef foogccmacrohfoo
#define foogccmacrohfoo
/***
This file is part of avahi.
avahi is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
avahi 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 Lesser General
Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with avahi; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
/** \file gccmacro.h Defines some macros for GCC extensions */
#include <avahi-common/cdecl.h>
AVAHI_C_DECL_BEGIN
#if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3)
#define AVAHI_GCC_ALLOC_SIZE(x) __attribute__ ((__alloc_size__(x)))
#define AVAHI_GCC_ALLOC_SIZE2(x,y) __attribute__ ((__alloc_size__(x,y)))
#else
/** Macro for usage of GCC's alloc_size attribute */
#define AVAHI_GCC_ALLOC_SIZE(x)
#define AVAHI_GCC_ALLOC_SIZE2(x,y)
#endif
#if defined(__GNUC__) && (__GNUC__ >= 4)
#define AVAHI_GCC_SENTINEL __attribute__ ((sentinel))
#else
/** Macro for usage of GCC's sentinel compilation warnings */
#define AVAHI_GCC_SENTINEL
#endif
#ifdef __GNUC__
#define AVAHI_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (printf, a, b)))
#else
/** Macro for usage of GCC's printf compilation warnings */
#define AVAHI_GCC_PRINTF_ATTR(a,b)
#endif
/** Same as AVAHI_GCC_PRINTF_ATTR but hard coded to arguments 1 and 2 */
#define AVAHI_GCC_PRINTF_ATTR12 AVAHI_GCC_PRINTF_ATTR(1,2)
/** Same as AVAHI_GCC_PRINTF_ATTR but hard coded to arguments 2 and 3 */
#define AVAHI_GCC_PRINTF_ATTR23 AVAHI_GCC_PRINTF_ATTR(2,3)
#ifdef __GNUC__
#define AVAHI_GCC_NORETURN __attribute__((noreturn))
#else
/** Macro for no-return functions */
#define AVAHI_GCC_NORETURN
#endif
#ifdef __GNUC__
#define AVAHI_GCC_UNUSED __attribute__ ((unused))
#else
/** Macro for not used parameter */
#define AVAHI_GCC_UNUSED
#endif
AVAHI_C_DECL_END
#endif
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