libc/include/sys/cdefs.h - platform/bionic - Git at Google

 /*	$NetBSD: cdefs.h,v 1.58 2004/12/11 05:59:00 christos Exp $	*/

 /*
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * Berkeley Software Design, Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	@(#)cdefs.h	8.8 (Berkeley) 1/9/95
  */

 #ifndef	_SYS_CDEFS_H_
 #define	_SYS_CDEFS_H_

 /*
  * Testing against Clang-specific extensions.
  */

 #ifndef __has_extension
 #define __has_extension         __has_feature
 #endif
 #ifndef __has_feature
 #define __has_feature(x)        0
 #endif
 #ifndef __has_include
 #define __has_include(x)        0
 #endif
 #ifndef __has_builtin
 #define __has_builtin(x)        0
 #endif
 #ifndef __has_attribute
 #define __has_attribute(x)      0
 #endif


 #define __strong_alias(alias, sym) \
     __asm__(".global " #alias "\n" \
             #alias " = " #sym);

 #if defined(__cplusplus)
 #define	__BEGIN_DECLS		extern "C" {
 #define	__END_DECLS		}
 #define	__static_cast(x,y)	static_cast<x>(y)
 #else
 #define	__BEGIN_DECLS
 #define	__END_DECLS
 #define	__static_cast(x,y)	(x)y
 #endif

 /*
  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
  * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
  * in between its arguments.  __CONCAT can also concatenate double-quoted
  * strings produced by the __STRING macro, but this only works with ANSI C.
  */

 #define	___STRING(x)	__STRING(x)
 #define	___CONCAT(x,y)	__CONCAT(x,y)

 #if defined(__STDC__) || defined(__cplusplus)
 #define	__P(protos)	protos		/* full-blown ANSI C */
 #define	__CONCAT(x,y)	x ## y
 #define	__STRING(x)	#x

 #define	__const		const		/* define reserved names to standard */
 #define	__signed	signed
 #define	__volatile	volatile
 #if defined(__cplusplus)
 #define	__inline	inline		/* convert to C++ keyword */
 #endif /* !__cplusplus */

 #else	/* !(__STDC__ || __cplusplus) */
 #define	__P(protos)	()		/* traditional C preprocessor */
 #define	__CONCAT(x,y)	x/**/y
 #define	__STRING(x)	"x"

 #endif	/* !(__STDC__ || __cplusplus) */

 /*
  * The following macro is used to remove const cast-away warnings
  * from gcc -Wcast-qual; it should be used with caution because it
  * can hide valid errors; in particular most valid uses are in
  * situations where the API requires it, not to cast away string
  * constants. We don't use *intptr_t on purpose here and we are
  * explicit about unsigned long so that we don't have additional
  * dependencies.
  */
 #define __UNCONST(a)	((void *)(unsigned long)(const void *)(a))

 #define __always_inline __attribute__((__always_inline__))
 #define __dead __attribute__((__noreturn__))
 #define __noreturn __attribute__((__noreturn__))
 #define __mallocfunc  __attribute__((malloc))
 #define __packed __attribute__((__packed__))
 #define __pure __attribute__((__const__))
 #define __pure2 __attribute__((__const__)) /* Android-added: used by FreeBSD libm */
 #define __purefunc    __attribute__((pure))
 #define __unused __attribute__((__unused__))
 #define __used __attribute__((__used__))

 /*
  * _Nonnull is similar to the nonnull attribute in that it will instruct
  * compilers to warn the user if it can prove that a null argument is being
  * passed. Unlike the nonnull attribute, this annotation indicated that a value
  * *should not* be null, not that it *cannot* be null, or even that the behavior
  * is undefined. The important distinction is that the optimizer will perform
  * surprising optimizations like the following:
  *
  *     void foo(void*) __attribute__(nonnull, 1);
  *
  *     int bar(int* p) {
  *       foo(p);
  *
  *       // The following null check will be elided because nonnull attribute
  *       // means that, since we call foo with p, p can be assumed to not be
  *       // null. Thus this will crash if we are called with a null pointer.
  *       if (p != NULL) {
  *         return *p;
  *       }
  *       return 0;
  *     }
  *
  *     int main() {
  *       return bar(NULL);
  *     }
  *
  * http://clang.llvm.org/docs/AttributeReference.html#nonnull
  */
 #if !(defined(__clang__) && __has_feature(nullability))
 #define _Nonnull
 #endif

 #define __printflike(x, y) __attribute__((__format__(printf, x, y)))
 #define __scanflike(x, y) __attribute__((__format__(scanf, x, y)))

 /*
  * GNU C version 2.96 added explicit branch prediction so that
  * the CPU back-end can hint the processor and also so that
  * code blocks can be reordered such that the predicted path
  * sees a more linear flow, thus improving cache behavior, etc.
  *
  * The following two macros provide us with a way to use this
  * compiler feature.  Use __predict_true() if you expect the expression
  * to evaluate to true, and __predict_false() if you expect the
  * expression to evaluate to false.
  *
  * A few notes about usage:
  *
  *	* Generally, __predict_false() error condition checks (unless
  *	  you have some _strong_ reason to do otherwise, in which case
  *	  document it), and/or __predict_true() `no-error' condition
  *	  checks, assuming you want to optimize for the no-error case.
  *
  *	* Other than that, if you don't know the likelihood of a test
  *	  succeeding from empirical or other `hard' evidence, don't
  *	  make predictions.
  *
  *	* These are meant to be used in places that are run `a lot'.
  *	  It is wasteful to make predictions in code that is run
  *	  seldomly (e.g. at subsystem initialization time) as the
  *	  basic block reordering that this affects can often generate
  *	  larger code.
  */
 #define	__predict_true(exp)	__builtin_expect((exp) != 0, 1)
 #define	__predict_false(exp)	__builtin_expect((exp) != 0, 0)

 #define __wur __attribute__((__warn_unused_result__))

 #ifdef __clang__
 #define __errorattr(msg) __attribute__((unavailable(msg)))
 #else
 #define __errorattr(msg) __attribute__((__error__(msg)))
 #endif

 #define __warnattr(msg) __attribute__((__warning__(msg)))

 #define __errordecl(name, msg) extern void name(void) __errorattr(msg)

 /*
  * Some BSD source needs these macros.
  * Originally they embedded the rcs versions of each source file
  * in the generated binary. We strip strings during build anyway,.
  */
 #define __IDSTRING(_prefix,_s) /* nothing */
 #define __COPYRIGHT(_s) /* nothing */
 #define __FBSDID(_s) /* nothing */
 #define __RCSID(_s) /* nothing */
 #define __SCCSID(_s) /* nothing */

 /*
  * With bionic, you always get all C and POSIX API.
  *
  * If you want BSD and/or GNU extensions, _BSD_SOURCE and/or _GNU_SOURCE are
  * expected to be defined by callers before *any* standard header file is
  * included.
  *
  * In our header files we test against __USE_BSD and __USE_GNU.
  */
 #if defined(_GNU_SOURCE)
 # define __USE_BSD 1
 # define __USE_GNU 1
 #endif

 #if defined(_BSD_SOURCE)
 # define __USE_BSD 1
 #endif

 /* _FILE_OFFSET_BITS 64 support. */
 #if !defined(__LP64__) && defined(_FILE_OFFSET_BITS)
 #if _FILE_OFFSET_BITS == 64
 #define __USE_FILE_OFFSET64 1
 #endif
 #endif

 /* C99 added the `restrict` type qualifier keyword. Before then, `__restrict` is a GNU extension. */
 #if __STDC_VERSION__ >= 199901L
 #define __restrict restrict
 #endif

 /* C99 added the `__func__` predefined identifier. */
 #if __STDC_VERSION__ < 199901L
 #define __func__ __PRETTY_FUNCTION__
 #endif

 #define  __BIONIC__   1
 #include <android/api-level.h>

 /* glibc compatibility. */
 #if __LP64__
 #define __WORDSIZE 64
 #else
 #define __WORDSIZE 32
 #endif

 /*
  * When _FORTIFY_SOURCE is defined, automatic bounds checking is
  * added to commonly used libc functions. If a buffer overrun is
  * detected, the program is safely aborted.
  *
  * See
  * http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html for details.
  */
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
 #  define __BIONIC_FORTIFY 1
 #  if _FORTIFY_SOURCE == 2
 #    define __bos(s) __builtin_object_size((s), 1)
 #  else
 #    define __bos(s) __builtin_object_size((s), 0)
 #  endif
 #  define __bos0(s) __builtin_object_size((s), 0)
 #  define __BIONIC_FORTIFY_INLINE extern __inline__ __always_inline __attribute__((gnu_inline)) __attribute__((__artificial__))
 #endif
 #define __BIONIC_FORTIFY_UNKNOWN_SIZE ((size_t) -1)

 /* Used to tag non-static symbols that are private and never exposed by the shared library. */
 #define __LIBC_HIDDEN__ __attribute__((visibility("hidden")))

 /*
  * Used to tag symbols that should be hidden for 64-bit,
  * but visible to preserve binary compatibility for LP32.
  */
 #ifdef __LP64__
 #define __LIBC32_LEGACY_PUBLIC__ __attribute__((visibility("hidden")))
 #else
 #define __LIBC32_LEGACY_PUBLIC__ __attribute__((visibility("default")))
 #endif

 /* Used to rename functions so that the compiler emits a call to 'x' rather than the function this was applied to. */
 #define __RENAME(x) __asm__(#x)

 #if __ANDROID_API__ < 21
 #define __BIONIC_LEGACY_INLINE static __inline
 #else
 #define __BIONIC_LEGACY_INLINE extern
 #endif

 #ifdef __clang__
 #define __AVAILABILITY(...) __attribute__((availability(android,__VA_ARGS__)))
 #else
 #define __AVAILABILITY(...)
 #endif

 #define __INTRODUCED_IN(api_level) __AVAILABILITY(introduced=api_level)
 #define __DEPRECATED_IN(api_level) __AVAILABILITY(deprecated=api_level)
 #define __REMOVED_IN(api_level) __AVAILABILITY(obsoleted=api_level)

 #define __INTRODUCED_IN_FUTURE __INTRODUCED_IN(10000)

 #if __LP64__
 #define __INTRODUCED_IN_32(api_level)
 #define __INTRODUCED_IN_64 __INTRODUCED_IN
 #else
 #define __INTRODUCED_IN_32 __INTRODUCED_IN
 #define __INTRODUCED_IN_64(api_level)
 #endif

 #if defined(__arm__)
 #define __INTRODUCED_IN_ARM __INTRODUCED_IN
 #else
 #define __INTRODUCED_IN_ARM(x)
 #endif

 #if defined(__i386__)
 #define __INTRODUCED_IN_X86 __INTRODUCED_IN
 #else
 #define __INTRODUCED_IN_X86(x)
 #endif

 #if defined(__mips__)
 #define __INTRODUCED_IN_MIPS __INTRODUCED_IN
 #else
 #define __INTRODUCED_IN_MIPS(x)
 #endif

 #if __has_builtin(__builtin_umul_overflow) || __GNUC__ >= 5
 #if __LP64__
 #define __size_mul_overflow(a, b, result) __builtin_umull_overflow(a, b, result)
 #else
 #define __size_mul_overflow(a, b, result) __builtin_umul_overflow(a, b, result)
 #endif
 #else
 extern __inline__ __always_inline __attribute__((gnu_inline))
 int __size_mul_overflow(__SIZE_TYPE__ a, __SIZE_TYPE__ b, __SIZE_TYPE__ *result) {
     *result = a * b;
     static const __SIZE_TYPE__ mul_no_overflow = 1UL << (sizeof(__SIZE_TYPE__) * 4);
     return (a >= mul_no_overflow || b >= mul_no_overflow) && a > 0 && (__SIZE_TYPE__)-1 / a < b;
 }
 #endif

 /*
  * TODO(danalbert): Remove this once we've moved entirely off prebuilts/ndk.
  *
  * The NDK used to have a __NDK_FPABI__ that was defined to empty for most cases
  * but `__attribute__((pcs("aapcs")))` for the now defunct armeabi-v7a-hard ABI.
  *
  * During the transition from prebuilts/ndk to ndk_headers, we'll have some
  * headers that still use __NDK_FPABI__ while the libc headers have stopped
  * defining it. In the interim, just provide an empty definition to keep the
  * build working.
  */
 #define __NDK_FPABI__

 #endif /* !_SYS_CDEFS_H_ */
	/* $NetBSD: cdefs.h,v 1.58 2004/12/11 05:59:00 christos Exp $ */

	/*
	* Copyright (c) 1991, 1993
	* The Regents of the University of California. All rights reserved.
	*
	* This code is derived from software contributed to Berkeley by
	* Berkeley Software Design, Inc.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. Neither the name of the University nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	* @(#)cdefs.h 8.8 (Berkeley) 1/9/95
	*/

	#ifndef _SYS_CDEFS_H_
	#define _SYS_CDEFS_H_

	/*
	* Testing against Clang-specific extensions.
	*/

	#ifndef __has_extension
	#define __has_extension __has_feature
	#endif
	#ifndef __has_feature
	#define __has_feature(x) 0
	#endif
	#ifndef __has_include
	#define __has_include(x) 0
	#endif
	#ifndef __has_builtin
	#define __has_builtin(x) 0
	#endif
	#ifndef __has_attribute
	#define __has_attribute(x) 0
	#endif


	#define __strong_alias(alias, sym) \
	__asm__(".global " #alias "\n" \
	#alias " = " #sym);

	#if defined(__cplusplus)
	#define __BEGIN_DECLS extern "C" {
	#define __END_DECLS }
	#define __static_cast(x,y) static_cast<x>(y)
	#else
	#define __BEGIN_DECLS
	#define __END_DECLS
	#define __static_cast(x,y) (x)y
	#endif

	/*
	* The __CONCAT macro is used to concatenate parts of symbol names, e.g.
	* with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
	* The __CONCAT macro is a bit tricky -- make sure you don't put spaces
	* in between its arguments. __CONCAT can also concatenate double-quoted
	* strings produced by the __STRING macro, but this only works with ANSI C.
	*/

	#define ___STRING(x) __STRING(x)
	#define ___CONCAT(x,y) __CONCAT(x,y)

	#if defined(__STDC__) \|\| defined(__cplusplus)
	#define __P(protos) protos /* full-blown ANSI C */
	#define __CONCAT(x,y) x ## y
	#define __STRING(x) #x

	#define __const const /* define reserved names to standard */
	#define __signed signed
	#define __volatile volatile
	#if defined(__cplusplus)
	#define __inline inline /* convert to C++ keyword */
	#endif /* !__cplusplus */

	#else /* !(__STDC__ \|\| __cplusplus) */
	#define __P(protos) () /* traditional C preprocessor */
	#define __CONCAT(x,y) x/**/y
	#define __STRING(x) "x"

	#endif /* !(__STDC__ \|\| __cplusplus) */

	/*
	* The following macro is used to remove const cast-away warnings
	* from gcc -Wcast-qual; it should be used with caution because it
	* can hide valid errors; in particular most valid uses are in
	* situations where the API requires it, not to cast away string
	* constants. We don't use *intptr_t on purpose here and we are
	* explicit about unsigned long so that we don't have additional
	* dependencies.
	*/
	#define __UNCONST(a) ((void )(unsigned long)(const void )(a))

	#define __always_inline __attribute__((__always_inline__))
	#define __dead __attribute__((__noreturn__))
	#define __noreturn __attribute__((__noreturn__))
	#define __mallocfunc __attribute__((malloc))
	#define __packed __attribute__((__packed__))
	#define __pure __attribute__((__const__))
	#define __pure2 __attribute__((__const__)) /* Android-added: used by FreeBSD libm */
	#define __purefunc __attribute__((pure))
	#define __unused __attribute__((__unused__))
	#define __used __attribute__((__used__))

	/*
	* _Nonnull is similar to the nonnull attribute in that it will instruct
	* compilers to warn the user if it can prove that a null argument is being
	* passed. Unlike the nonnull attribute, this annotation indicated that a value
	* should not be null, not that it cannot be null, or even that the behavior
	* is undefined. The important distinction is that the optimizer will perform
	* surprising optimizations like the following:
	*
	* void foo(void*) __attribute__(nonnull, 1);
	*
	* int bar(int* p) {
	* foo(p);
	*
	* // The following null check will be elided because nonnull attribute
	* // means that, since we call foo with p, p can be assumed to not be
	* // null. Thus this will crash if we are called with a null pointer.
	* if (p != NULL) {
	* return *p;
	* }
	* return 0;
	* }
	*
	* int main() {
	* return bar(NULL);
	* }
	*
	* http://clang.llvm.org/docs/AttributeReference.html#nonnull
	*/
	#if !(defined(__clang__) && __has_feature(nullability))
	#define _Nonnull
	#endif

	#define __printflike(x, y) __attribute__((__format__(printf, x, y)))
	#define __scanflike(x, y) __attribute__((__format__(scanf, x, y)))

	/*
	* GNU C version 2.96 added explicit branch prediction so that
	* the CPU back-end can hint the processor and also so that
	* code blocks can be reordered such that the predicted path
	* sees a more linear flow, thus improving cache behavior, etc.
	*
	* The following two macros provide us with a way to use this
	* compiler feature. Use __predict_true() if you expect the expression
	* to evaluate to true, and __predict_false() if you expect the
	* expression to evaluate to false.
	*
	* A few notes about usage:
	*
	* * Generally, __predict_false() error condition checks (unless
	* you have some _strong_ reason to do otherwise, in which case
	* document it), and/or __predict_true() `no-error' condition
	* checks, assuming you want to optimize for the no-error case.
	*
	* * Other than that, if you don't know the likelihood of a test
	* succeeding from empirical or other `hard' evidence, don't
	* make predictions.
	*
	* * These are meant to be used in places that are run `a lot'.
	* It is wasteful to make predictions in code that is run
	* seldomly (e.g. at subsystem initialization time) as the
	* basic block reordering that this affects can often generate
	* larger code.
	*/
	#define __predict_true(exp) __builtin_expect((exp) != 0, 1)
	#define __predict_false(exp) __builtin_expect((exp) != 0, 0)

	#define __wur __attribute__((__warn_unused_result__))

	#ifdef __clang__
	#define __errorattr(msg) __attribute__((unavailable(msg)))
	#else
	#define __errorattr(msg) __attribute__((__error__(msg)))
	#endif

	#define __warnattr(msg) __attribute__((__warning__(msg)))

	#define __errordecl(name, msg) extern void name(void) __errorattr(msg)

	/*
	* Some BSD source needs these macros.
	* Originally they embedded the rcs versions of each source file
	* in the generated binary. We strip strings during build anyway,.
	*/
	#define __IDSTRING(_prefix,_s) /* nothing */
	#define __COPYRIGHT(_s) /* nothing */
	#define __FBSDID(_s) /* nothing */
	#define __RCSID(_s) /* nothing */
	#define __SCCSID(_s) /* nothing */

	/*
	* With bionic, you always get all C and POSIX API.
	*
	* If you want BSD and/or GNU extensions, _BSD_SOURCE and/or _GNU_SOURCE are
	* expected to be defined by callers before any standard header file is
	* included.
	*
	* In our header files we test against __USE_BSD and __USE_GNU.
	*/
	#if defined(_GNU_SOURCE)
	# define __USE_BSD 1
	# define __USE_GNU 1
	#endif

	#if defined(_BSD_SOURCE)
	# define __USE_BSD 1
	#endif

	/* _FILE_OFFSET_BITS 64 support. */
	#if !defined(__LP64__) && defined(_FILE_OFFSET_BITS)
	#if _FILE_OFFSET_BITS == 64
	#define __USE_FILE_OFFSET64 1
	#endif
	#endif

	/* C99 added the `restrict` type qualifier keyword. Before then, `__restrict` is a GNU extension. */
	#if __STDC_VERSION__ >= 199901L
	#define __restrict restrict
	#endif

	/* C99 added the `__func__` predefined identifier. */
	#if __STDC_VERSION__ < 199901L
	#define __func__ __PRETTY_FUNCTION__
	#endif

	#define __BIONIC__ 1
	#include <android/api-level.h>

	/* glibc compatibility. */
	#if __LP64__
	#define __WORDSIZE 64
	#else
	#define __WORDSIZE 32
	#endif

	/*
	* When _FORTIFY_SOURCE is defined, automatic bounds checking is
	* added to commonly used libc functions. If a buffer overrun is
	* detected, the program is safely aborted.
	*
	* See
	* http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html for details.
	*/
	#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
	# define __BIONIC_FORTIFY 1
	# if _FORTIFY_SOURCE == 2
	# define __bos(s) __builtin_object_size((s), 1)
	# else
	# define __bos(s) __builtin_object_size((s), 0)
	# endif
	# define __bos0(s) __builtin_object_size((s), 0)
	# define __BIONIC_FORTIFY_INLINE extern __inline__ __always_inline __attribute__((gnu_inline)) __attribute__((__artificial__))
	#endif
	#define __BIONIC_FORTIFY_UNKNOWN_SIZE ((size_t) -1)

	/* Used to tag non-static symbols that are private and never exposed by the shared library. */
	#define __LIBC_HIDDEN__ __attribute__((visibility("hidden")))

	/*
	* Used to tag symbols that should be hidden for 64-bit,
	* but visible to preserve binary compatibility for LP32.
	*/
	#ifdef __LP64__
	#define __LIBC32_LEGACY_PUBLIC__ __attribute__((visibility("hidden")))
	#else
	#define __LIBC32_LEGACY_PUBLIC__ __attribute__((visibility("default")))
	#endif

	/* Used to rename functions so that the compiler emits a call to 'x' rather than the function this was applied to. */
	#define __RENAME(x) __asm__(#x)

	#if __ANDROID_API__ < 21
	#define __BIONIC_LEGACY_INLINE static __inline
	#else
	#define __BIONIC_LEGACY_INLINE extern
	#endif

	#ifdef __clang__
	#define __AVAILABILITY(...) __attribute__((availability(android,__VA_ARGS__)))
	#else
	#define __AVAILABILITY(...)
	#endif

	#define __INTRODUCED_IN(api_level) __AVAILABILITY(introduced=api_level)
	#define __DEPRECATED_IN(api_level) __AVAILABILITY(deprecated=api_level)
	#define __REMOVED_IN(api_level) __AVAILABILITY(obsoleted=api_level)

	#define __INTRODUCED_IN_FUTURE __INTRODUCED_IN(10000)

	#if __LP64__
	#define __INTRODUCED_IN_32(api_level)
	#define __INTRODUCED_IN_64 __INTRODUCED_IN
	#else
	#define __INTRODUCED_IN_32 __INTRODUCED_IN
	#define __INTRODUCED_IN_64(api_level)
	#endif

	#if defined(__arm__)
	#define __INTRODUCED_IN_ARM __INTRODUCED_IN
	#else
	#define __INTRODUCED_IN_ARM(x)
	#endif

	#if defined(__i386__)
	#define __INTRODUCED_IN_X86 __INTRODUCED_IN
	#else
	#define __INTRODUCED_IN_X86(x)
	#endif

	#if defined(__mips__)
	#define __INTRODUCED_IN_MIPS __INTRODUCED_IN
	#else
	#define __INTRODUCED_IN_MIPS(x)
	#endif

	#if __has_builtin(__builtin_umul_overflow) \|\| __GNUC__ >= 5
	#if __LP64__
	#define __size_mul_overflow(a, b, result) __builtin_umull_overflow(a, b, result)
	#else
	#define __size_mul_overflow(a, b, result) __builtin_umul_overflow(a, b, result)
	#endif
	#else
	extern __inline__ __always_inline __attribute__((gnu_inline))
	int __size_mul_overflow(__SIZE_TYPE__ a, __SIZE_TYPE__ b, __SIZE_TYPE__ *result) {
	result = a b;
	static const __SIZE_TYPE__ mul_no_overflow = 1UL << (sizeof(__SIZE_TYPE__) * 4);
	return (a >= mul_no_overflow \|\| b >= mul_no_overflow) && a > 0 && (__SIZE_TYPE__)-1 / a < b;
	}
	#endif

	/*
	* TODO(danalbert): Remove this once we've moved entirely off prebuilts/ndk.
	*
	* The NDK used to have a __NDK_FPABI__ that was defined to empty for most cases
	* but `__attribute__((pcs("aapcs")))` for the now defunct armeabi-v7a-hard ABI.
	*
	* During the transition from prebuilts/ndk to ndk_headers, we'll have some
	* headers that still use __NDK_FPABI__ while the libc headers have stopped
	* defining it. In the interim, just provide an empty definition to keep the
	* build working.
	*/
	#define __NDK_FPABI__

	#endif /* !_SYS_CDEFS_H_ */