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  
      19  extern void __chk_fail (void) __attribute__ ((__noreturn__));
      20  libc_hidden_proto (__chk_fail)
      21  rtld_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  #endif