1#ifndef _SYS_CDEFS_H
 2
 3/* This is outside of _ISOMAC to enforce that _Static_assert always
 4   uses the two-argument form.  This can be removed once the minimum
 5   GCC version used to compile glibc is GCC 9.1.  */
 6#ifndef __cplusplus
 7# define _Static_assert(expr, diagnostic) _Static_assert (expr, diagnostic)
 8#endif
 9
10#include <misc/sys/cdefs.h>
11
12#ifndef _ISOMAC
13/* The compiler will optimize based on the knowledge the parameter is
14   not NULL.  This will omit tests.  A robust implementation cannot allow
15   this so when compiling glibc itself we ignore this attribute.  */
16# undef __nonnull
17# define __nonnull(params)
18
19extern void __chk_fail (void) __attribute__ ((__noreturn__));
20libc_hidden_proto (__chk_fail)
21rtld_hidden_proto (__chk_fail)
22
23/* If we are using redirects internally to support long double,
24   we need to tweak some macros to ensure the PLT bypass tricks
25   continue to work in libc. */
26#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 && IS_IN (libc) && defined SHARED
27
28# undef __LDBL_REDIR_DECL
29# define __LDBL_REDIR_DECL(func) \
30   extern __typeof(func) func __asm (__ASMNAME ("__GI____ieee128_" #func));
31
32# undef libc_hidden_ldbl_proto
33# define libc_hidden_ldbl_proto(func, attrs...) \
34   extern __typeof(func) ___ieee128_ ## func; \
35   libc_hidden_proto (___ieee128_ ## func, ##attrs);
36
37# undef __LDBL_REDIR2_DECL
38# define __LDBL_REDIR2_DECL(func) \
39   extern __typeof(__ ## func) __ ## func __asm (__ASMNAME ("__GI____ieee128___" #func));
40
41#endif
42
43#if defined SHARED
44#if IS_IN (libc) && __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
45
46#undef __REDIRECT_FORTIFY
47#define __REDIRECT_FORTIFY(name, proto, alias) \
48  __REDIRECT(name, proto, __GI_##alias)
49
50#undef __REDIRECT_FORTIFY_NTH
51#define __REDIRECT_FORTIFY_NTH(name, proto, alias) \
52  __REDIRECT_NTH(name, proto, __GI_##alias)
53
54#endif
55#endif /* defined SHARED */
56
57#endif /* !defined _ISOMAC */
58
59/*  Prevents a function from being considered for inlining and cloning.  */
60#ifdef __clang__
61# define __attribute_optimization_barrier__ __attribute__ ((optnone))
62#else
63# define __attribute_optimization_barrier__ __attribute__ ((noinline, noclone))
64#endif
65
66#endif