diff options
Diffstat (limited to 'gnulib-m4/stdalign.m4')
| -rw-r--r-- | gnulib-m4/stdalign.m4 | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/gnulib-m4/stdalign.m4 b/gnulib-m4/stdalign.m4 index 1c29d1e4..d22360e1 100644 --- a/gnulib-m4/stdalign.m4 +++ b/gnulib-m4/stdalign.m4 @@ -1,9 +1,10 @@ # stdalign.m4 -# serial 1 -dnl Copyright 2011-2024 Free Software Foundation, Inc. +# serial 3 +dnl Copyright 2011-2025 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. +dnl This file is offered as-is, without any warranty. # Check for alignas and alignof that conform to C23. @@ -29,7 +30,7 @@ AC_DEFUN([gl_ALIGNASOF], /* Test that alignof yields a result consistent with offsetof. This catches GCC bug 52023 - <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>. */ + <https://gcc.gnu.org/PR52023>. */ #ifdef __cplusplus template <class t> struct alignof_helper { char a; t b; }; # define ao(type) offsetof (alignof_helper<type>, b) @@ -81,10 +82,10 @@ AC_DEFUN([gl_ALIGNASOF], References: ISO C23 (latest free draft - <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf>) + <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf>) sections 6.5.3.4, 6.7.5, 7.15. C++11 (latest free draft - <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf>) + <https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf>) section 18.10. */ /* alignof (TYPE), also known as _Alignof (TYPE), yields the alignment @@ -102,12 +103,14 @@ AC_DEFUN([gl_ALIGNASOF], want to be portable to HP-UX 10.20 cc and AIX 3.2.5 xlc. */ /* GCC releases before GCC 4.9 had a bug in _Alignof. See GCC bug 52023 - <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>. - clang versions < 8.0.0 have the same bug. */ + <https://gcc.gnu.org/PR52023>. + clang versions < 8.0.0 have the same bug. + IBM XL C V16.1.0 cc (non-clang) has the same bug. */ # if (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 \ || (defined __GNUC__ && __GNUC__ < 4 + (__GNUC_MINOR__ < 9) \ && !defined __clang__) \ - || (defined __clang__ && __clang_major__ < 8)) + || (defined __clang__ && __clang_major__ < 8) \ + || defined __xlC__) # undef/**/_Alignof # ifdef __cplusplus # if (201103 <= __cplusplus || defined _MSC_VER) @@ -178,7 +181,8 @@ AC_DEFUN([gl_ALIGNASOF], # if ((defined _Alignas \ && !(defined __cplusplus \ && (201103 <= __cplusplus || defined _MSC_VER))) \ - || (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__)) + || (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__ \ + && !defined __xlC__)) # define alignas _Alignas # endif # endif |