attributes.h

   1 /*
   2  * Copyright (c) 2021-2022 Sergey Sushilin <sergeysushilin@protonmail.com>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef _ATTRIBUTES_H
  18 #define _ATTRIBUTES_H 1
  19
  20 #if  (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) \
  21         || defined(__clang__) || __SUNPRO_C >= 0x5110 \
  22         || defined(__TINYC__) || __HP_cc >= 61000
  23 # define __noreturn __attribute__((__noreturn__))
  24 #else
  25 # define __noreturn /* Nothing.  */
  26 #endif
  27
  28 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
  29 # define __pure __attribute__((__pure__))
  30 #else
  31 # define __pure /* Nothing.  */
  32 #endif
  33
  34 #undef __const
  35 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
  36 # define __const __attribute__((__const__))
  37 #else
  38 # define __const /* Nothing.  */
  39 #endif
  40
  41 #if !defined(__nonnull)
  42 # if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined(__clang__)
  43 #  define __nonnull(params) __attribute__((__nonnull__ params))
  44 # else
  45 #  define __nonnull(params) /* Nothing.  */
  46 # endif
  47 #endif
  48
  49 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  50 # define __unused __attribute__((__unused__))
  51 #else
  52 # define __unused /* Nothing.  */
  53 #endif
  54
  55 #undef __warn_unused_result
  56 /* Warn about unused results of certain
  57    function calls which can lead to problems.  */
  58 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
  59 # define __warn_unused_result __attribute__((__warn_unused_result__))
  60 #else
  61 # define __warn_unused_result /* Nothing.  */
  62 #endif
  63
  64 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
  65 # define __format_printf(p1, p2) __attribute__((__format__(__gnu_printf__, p1, p2)))
  66 #elif __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5)
  67 # define __format_printf(p1, p2) __attribute__((__format__(__printf__, p1, p2)))
  68 #else
  69 # define __format_printf(p1, p2) /* Nothing.  */
  70 #endif
  71
  72 #if __GNUC__ >= 11
  73 # define __dealloc(f, n) __attribute__((__malloc__ (f, n)))
  74 # define __malloc __attribute__((__malloc__))
  75 #elif __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
  76 # define __dealloc(f, n) /* Nothing.  */
  77 # define __malloc __attribute__((__malloc__))
  78 #else
  79 # define __dealloc(f, n) /* Nothing.  */
  80 # define __malloc /* Nothing.  */
  81 #endif
  82
  83 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
  84 # define __alloc_size(params) __attribute__((__alloc_size__ params))
  85 #else
  86 # define __alloc_size(params) /* Nothing.  */
  87 #endif
  88
  89 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  90 # define __packed __attribute__((__packed__))
  91 #else
  92 # define __packed /* Nothing.  */
  93 #endif
  94
  95 #undef __returns_nonnull
  96 #if (__GNUC__ >= 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)) && !defined(__PCC__)
  97 # define __returns_nonnull __attribute__((__returns_nonnull__))
  98 #else
  99 # define __returns_nonnull /* Nothing.  */
 100 #endif
 101
 102 #if __GNUC__ >= 7
 103 # define fallthrough __attribute__((__fallthrough__))
 104 #else
 105 # define fallthrough ((void)0)
 106 #endif
 107
 108 #endif /* _ATTRIBUTES_H */