Synchronize with FreeBSD.
* libc/include/sys/cdefs.h: Synchronize with latest FreeBSD
version.
This commit is contained in:
Jeff Johnston
parent
443467d752
commit
ecee0b0607
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@ -1,7 +1,12 @@
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2015-10-13 Sebastian Huber <sebastian.huber@embedded-brains.de>
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* libc/include/sys/cdefs.h: Add style changes of latest FreeBSD
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version.
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* libc/include/sys/cdefs.h: Synchronize with latest FreeBSD
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version.
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2015-10-13 Sebastian Huber <sebastian.huber@embedded-brains.de>
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* libc/include/sys/cdefs.h: Add style changes of latest FreeBSD
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version.
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2015-10-08 Nick Clifton <nickc@redhat.com>
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@ -69,7 +69,9 @@
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/*
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* Testing against Clang-specific extensions.
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*/
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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#ifndef __has_extension
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#define __has_extension __has_feature
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#endif
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@ -119,7 +121,7 @@
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#undef __GNUCLIKE_BUILTIN_CONSTANT_P
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#endif
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#if (__GNUC_MINOR__ > 95 || __GNUC__ >= 3) && !defined(__INTEL_COMPILER)
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#if (__GNUC_MINOR__ > 95 || __GNUC__ >= 3)
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#define __GNUCLIKE_BUILTIN_VARARGS 1
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#define __GNUCLIKE_BUILTIN_STDARG 1
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#define __GNUCLIKE_BUILTIN_VAALIST 1
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@ -229,8 +231,12 @@
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#define __unused
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#define __packed
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#define __aligned(x)
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#define __alloc_align(x)
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#define __alloc_size(x)
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#define __section(x)
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#define __weak_symbol
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#else
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#define __weak_symbol __attribute__((__weak__))
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#if !__GNUC_PREREQ__(2, 5) && !defined(__INTEL_COMPILER)
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#define __dead2
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#define __pure2
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@ -242,7 +248,7 @@
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#define __unused
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/* XXX Find out what to do for __packed, __aligned and __section */
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#endif
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#if __GNUC_PREREQ__(2, 7)
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#if __GNUC_PREREQ__(2, 7) || defined(__INTEL_COMPILER)
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#define __dead2 __attribute__((__noreturn__))
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#define __pure2 __attribute__((__const__))
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#define __unused __attribute__((__unused__))
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@ -251,16 +257,17 @@
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#define __aligned(x) __attribute__((__aligned__(x)))
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#define __section(x) __attribute__((__section__(x)))
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#endif
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#if defined(__INTEL_COMPILER)
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#define __dead2 __attribute__((__noreturn__))
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#define __pure2 __attribute__((__const__))
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#define __unused __attribute__((__unused__))
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#define __used __attribute__((__used__))
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#define __packed __attribute__((__packed__))
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#define __aligned(x) __attribute__((__aligned__(x)))
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#define __section(x) __attribute__((__section__(x)))
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#if __GNUC_PREREQ__(4, 3) || __has_attribute(__alloc_size__)
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#define __alloc_size(x) __attribute__((__alloc_size__(x)))
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#else
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#define __alloc_size(x)
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#endif
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#if __GNUC_PREREQ__(4, 9) || __has_attribute(__alloc_align__)
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#define __alloc_align(x) __attribute__((__alloc_align__(x)))
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#else
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#define __alloc_align(x)
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#endif
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#endif /* lint */
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#if !__GNUC_PREREQ__(2, 95)
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#define __alignof(x) __offsetof(struct { char __a; x __b; }, __b)
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@ -270,7 +277,7 @@
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* Keywords added in C11.
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*/
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#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L
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#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L || defined(lint)
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#if !__has_extension(c_alignas)
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#if (defined(__cplusplus) && __cplusplus >= 201103L) || \
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@ -302,23 +309,28 @@
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#define _Noreturn __dead2
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#endif
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#if __GNUC_PREREQ__(4, 6) && !defined(__cplusplus)
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/* Do nothing: _Static_assert() works as per C11 */
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#elif !__has_extension(c_static_assert)
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#if !__has_extension(c_static_assert)
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#if (defined(__cplusplus) && __cplusplus >= 201103L) || \
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__has_extension(cxx_static_assert)
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#define _Static_assert(x, y) static_assert(x, y)
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#elif __GNUC_PREREQ__(4,6)
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/* Nothing, gcc 4.6 and higher has _Static_assert built-in */
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#elif defined(__COUNTER__)
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#define _Static_assert(x, y) __Static_assert(x, __COUNTER__)
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#define __Static_assert(x, y) ___Static_assert(x, y)
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#define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1]
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#define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1] \
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__unused
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#else
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#define _Static_assert(x, y) struct __hack
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#endif
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#endif
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#if !__has_extension(c_thread_local)
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/* XXX: Change this to test against C++11 when clang in base supports it. */
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/*
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* XXX: Some compilers (Clang 3.3, GCC 4.7) falsely announce C++11 mode
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* without actually supporting the thread_local keyword. Don't check for
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* the presence of C++11 when defining _Thread_local.
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*/
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#if /* (defined(__cplusplus) && __cplusplus >= 201103L) || */ \
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__has_extension(cxx_thread_local)
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#define _Thread_local thread_local
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@ -338,7 +350,8 @@
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* distinguish multiple cases.
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*/
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#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
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#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \
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__has_extension(c_generic_selections)
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#define __generic(expr, t, yes, no) \
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_Generic(expr, t: yes, default: no)
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#elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus)
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@ -369,14 +382,18 @@
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#if __GNUC_PREREQ__(3, 3)
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#define __nonnull(x) __attribute__((__nonnull__(x)))
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#define __nonnull_all __attribute__((__nonnull__))
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#else
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#define __nonnull(x)
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#define __nonnull_all
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#endif
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#if __GNUC_PREREQ__(3, 4)
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#define __fastcall __attribute__((__fastcall__))
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#define __result_use_check __attribute__((__warn_unused_result__))
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#else
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#define __fastcall
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#define __result_use_check
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#endif
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#if __GNUC_PREREQ__(4, 1)
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@ -385,6 +402,12 @@
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#define __returns_twice
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#endif
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#if __GNUC_PREREQ__(4, 6) || __has_builtin(__builtin_unreachable)
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#define __unreachable() __builtin_unreachable()
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#else
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#define __unreachable() ((void)0)
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#endif
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/* XXX: should use `#if __STDC_VERSION__ < 199901'. */
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#if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
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#define __func__ NULL
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@ -440,12 +463,14 @@
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#define __predict_false(exp) (exp)
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#endif
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#if __GNUC_PREREQ__(4, 2)
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#define __hidden __attribute__((__visibility__("hidden")))
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#if __GNUC_PREREQ__(4, 0)
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#define __sentinel __attribute__((__sentinel__))
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#define __exported __attribute__((__visibility__("default")))
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#define __hidden __attribute__((__visibility__("hidden")))
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#else
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#define __hidden
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#define __sentinel
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#define __exported
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#define __hidden
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#endif
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#define __offsetof(type, field) offsetof(type, field)
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@ -460,7 +485,7 @@
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*/
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#if __GNUC_PREREQ__(3, 1)
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#define __containerof(x, s, m) ({ \
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const volatile __typeof__(((s *)0)->m) *__x = (x); \
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const volatile __typeof(((s *)0)->m) *__x = (x); \
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__DEQUALIFY(s *, (const volatile char *)__x - __offsetof(s, m));\
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})
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#else
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@ -492,6 +517,22 @@
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__attribute__((__format__ (__strftime__, fmtarg, firstvararg)))
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#endif
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/*
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* FORTIFY_SOURCE, and perhaps other compiler-specific features, require
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* the use of non-standard inlining. In general we should try to avoid
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* using these but GCC-compatible compilers tend to support the extensions
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* well enough to use them in limited cases.
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*/
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#if defined(__GNUC_GNU_INLINE__) || defined(__GNUC_STDC_INLINE__)
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#if __GNUC_PREREQ__(4, 3) || __has_attribute(__artificial__)
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#define __gnu_inline __attribute__((__gnu_inline__, __artificial__))
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#else
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#define __gnu_inline __attribute__((__gnu_inline__))
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#endif /* artificial */
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#else
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#define __gnu_inline
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#endif
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/* Compiler-dependent macros that rely on FreeBSD-specific extensions. */
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#if defined(__FreeBSD_cc_version) && __FreeBSD_cc_version >= 300001 && \
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defined(__GNUC__) && !defined(__INTEL_COMPILER)
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@ -709,4 +750,79 @@
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#endif
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#endif
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/*
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* Type Safety Checking
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*
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* Clang provides additional attributes to enable checking type safety
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* properties that cannot be enforced by the C type system.
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*/
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#if __has_attribute(__argument_with_type_tag__) && \
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__has_attribute(__type_tag_for_datatype__) && !defined(lint)
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#define __arg_type_tag(arg_kind, arg_idx, type_tag_idx) \
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__attribute__((__argument_with_type_tag__(arg_kind, arg_idx, type_tag_idx)))
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#define __datatype_type_tag(kind, type) \
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__attribute__((__type_tag_for_datatype__(kind, type)))
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#else
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#define __arg_type_tag(arg_kind, arg_idx, type_tag_idx)
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#define __datatype_type_tag(kind, type)
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#endif
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/*
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* Lock annotations.
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*
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* Clang provides support for doing basic thread-safety tests at
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* compile-time, by marking which locks will/should be held when
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* entering/leaving a functions.
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*
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* Furthermore, it is also possible to annotate variables and structure
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* members to enforce that they are only accessed when certain locks are
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* held.
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*/
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#if __has_extension(c_thread_safety_attributes)
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#define __lock_annotate(x) __attribute__((x))
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#else
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#define __lock_annotate(x)
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#endif
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/* Structure implements a lock. */
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#define __lockable __lock_annotate(lockable)
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/* Function acquires an exclusive or shared lock. */
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#define __locks_exclusive(...) \
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__lock_annotate(exclusive_lock_function(__VA_ARGS__))
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#define __locks_shared(...) \
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__lock_annotate(shared_lock_function(__VA_ARGS__))
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/* Function attempts to acquire an exclusive or shared lock. */
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#define __trylocks_exclusive(...) \
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__lock_annotate(exclusive_trylock_function(__VA_ARGS__))
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#define __trylocks_shared(...) \
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__lock_annotate(shared_trylock_function(__VA_ARGS__))
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/* Function releases a lock. */
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#define __unlocks(...) __lock_annotate(unlock_function(__VA_ARGS__))
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/* Function asserts that an exclusive or shared lock is held. */
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#define __asserts_exclusive(...) \
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__lock_annotate(assert_exclusive_lock(__VA_ARGS__))
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#define __asserts_shared(...) \
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__lock_annotate(assert_shared_lock(__VA_ARGS__))
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/* Function requires that an exclusive or shared lock is or is not held. */
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#define __requires_exclusive(...) \
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__lock_annotate(exclusive_locks_required(__VA_ARGS__))
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#define __requires_shared(...) \
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__lock_annotate(shared_locks_required(__VA_ARGS__))
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#define __requires_unlocked(...) \
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__lock_annotate(locks_excluded(__VA_ARGS__))
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/* Function should not be analyzed. */
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#define __no_lock_analysis __lock_annotate(no_thread_safety_analysis)
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/* Guard variables and structure members by lock. */
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#define __guarded_by(x) __lock_annotate(guarded_by(x))
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#define __pt_guarded_by(x) __lock_annotate(pt_guarded_by(x))
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#endif /* !_SYS_CDEFS_H_ */
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