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Update from Gnulib by running admin/merge-gnulib

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This commit is contained in:
Paul Eggert 2024-01-20 11:45:04 -08:00
parent d276996c4f
commit 3add626f14
129 changed files with 1062 additions and 676 deletions
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12
m4/stdalign.m4
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@ -13,10 +13,10 @@ AC_DEFUN([gl_ALIGNASOF],
[
AC_CACHE_CHECK([for alignas and alignof],
[gl_cv_header_working_stdalign_h],
[gl_save_CFLAGS=$CFLAGS
[gl_saved_CFLAGS=$CFLAGS
for gl_working in "yes, keywords" "yes, <stdalign.h> macros"; do
AS_CASE([$gl_working],
[*stdalign.h*], [CFLAGS="$gl_save_CFLAGS -DINCLUDE_STDALIGN_H"])
[*stdalign.h*], [CFLAGS="$gl_saved_CFLAGS -DINCLUDE_STDALIGN_H"])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <stdint.h>
@ -56,7 +56,7 @@ AC_DEFUN([gl_ALIGNASOF],
[gl_cv_header_working_stdalign_h=$gl_working],
[gl_cv_header_working_stdalign_h=no])
CFLAGS=$gl_save_CFLAGS
CFLAGS=$gl_saved_CFLAGS
test "$gl_cv_header_working_stdalign_h" != no && break
done])
@ -112,7 +112,11 @@ AC_DEFUN([gl_ALIGNASOF],
# define _Alignof(type) alignof (type)
# else
template <class __t> struct __alignof_helper { char __a; __t __b; };
# define _Alignof(type) offsetof (__alignof_helper<type>, __b)
# if (defined __GNUC__ && 4 <= __GNUC__) || defined __clang__
# define _Alignof(type) __builtin_offsetof (__alignof_helper<type>, __b)
# else
# define _Alignof(type) offsetof (__alignof_helper<type>, __b)
# endif
# define _GL_STDALIGN_NEEDS_STDDEF 1
# endif
# else