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/*
* Copyright (C) 2015-2016 Dimitris Papastamos <sin@2f30.org>
* Copyright (C) 2022 q66 <q66@chimera-linux.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _FORTIFY_HEADERS_H
#define _FORTIFY_HEADERS_H
#ifdef __clang__
#if _FORTIFY_SOURCE > 2 && defined __has_attribute && __has_attribute(pass_dynamic_object_size)
#define _FORTIFY_POSN(n) const __attribute__((pass_dynamic_object_size(n)))
#else
/* clang uses overloads; see https://github.com/llvm/llvm-project/issues/53516 */
#define _FORTIFY_POSN(n) const __attribute__((pass_object_size__(n)))
#endif
/* we can't use extern inline with overloads without making them external */
#define _FORTIFY_INLINE static __inline__ \
__attribute__((__always_inline__,__artificial__,__overloadable__))
#else /* !__clang__ */
#define _FORTIFY_POSN(n)
#define _FORTIFY_INLINE extern __inline__ \
__attribute__((__always_inline__,__gnu_inline__,__artificial__))
#endif /* __clang__ */
#define _FORTIFY_POS0 _FORTIFY_POSN(0)
#define _FORTIFY_POS1 _FORTIFY_POSN(1)
#define _FORTIFY_POS2 _FORTIFY_POSN(2)
#define _FORTIFY_STR(s) #s
#define _FORTIFY_ORIG(p,fn) __typeof__(fn) __orig_##fn __asm__(_FORTIFY_STR(p) #fn)
#define _FORTIFY_FNB(fn) _FORTIFY_ORIG(__USER_LABEL_PREFIX__,fn)
#define _FORTIFY_FN(fn) _FORTIFY_FNB(fn); _FORTIFY_INLINE
#if _FORTIFY_SOURCE > 2 && defined __has_builtin && __has_builtin (__builtin_dynamic_object_size)
#define __bos(ptr, type) __builtin_dynamic_object_size (ptr, type)
#else
#define __bos(ptr, type) __builtin_object_size (ptr, type)
#endif
#endif
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