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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-01-11 11:53:32 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-02-09 16:57:52 -0300 |
| commit | c8ba52ab3350c334d6e34b1439a4c0c1431351f3 (patch) | |
| tree | a1eaf3602326da019363fd219d1ba92b8b6ed2e7 /conform | |
| parent | 7dd416491e080456fc7742d884c520526509413e (diff) | |
| download | glibc-c8ba52ab3350c334d6e34b1439a4c0c1431351f3.tar.gz glibc-c8ba52ab3350c334d6e34b1439a4c0c1431351f3.tar.xz glibc-c8ba52ab3350c334d6e34b1439a4c0c1431351f3.zip | |
misc: Sync cdefs.h with gnulib
It adds __glibc_has_builtin, __glibc_has_extension, and
__attribute_maybe_unused__ alongsize with some fixes.
The differences are:
--- glibc
+++ gnulib
@@ -259,7 +259,9 @@
# define __attribute_const__ /* Ignore */
#endif
-#if __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__)
+#if defined __STDC_VERSION__ && 201710L < __STDC_VERSION__
+# define __attribute_maybe_unused__ [[__maybe_unused__]]
+#elif __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__)
# define __attribute_maybe_unused__ __attribute__ ((__unused__))
#else
# define __attribute_maybe_unused__ /* Ignore */
@@ -485,7 +487,7 @@
/* The #ifndef lets Gnulib avoid including these on non-glibc
platforms, where the includes typically do not exist. */
-#ifdef __GLIBC__
+#ifndef __WORDSIZE
# include <bits/wordsize.h>
# include <bits/long-double.h>
#endif
The [[__attribute_maybe_unused__]] attribute removal __ is due Joseph
questioning gcc support with -std=c2x or -std=gnu2x [1].
The _WORDSIZE replacement by __GLIBC__ is because it does not play
well with internal cdefs.h that also uses
__LDOUBLE_REDIRECTS_TO_FLOAT128_ABI.
Checked on x86_64-linux-gnu.
[1] https://sourceware.org/pipermail/libc-alpha/2021-January/121600.html
Diffstat (limited to 'conform')
0 files changed, 0 insertions, 0 deletions