include/sys/cdefs.h

   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 #endif /* !defined _ISOMAC */
  44
  45 #endif