2023-01-14 Paul Eggert <eggert@cs.ucla.edu>
+ alignof: port to strict C23
+ Problem reported by Khem Raj in:
+ https://lists.gnu.org/r/bug-gnulib/2023-01/msg00111.html
+ * lib/alignof.h (alignof_slot) [!__cplusplus]: Use C23-style alignof.
+ * modules/alignof (Depends-on): Add stdalign.
+
test-framework-sh: work around AIX 7.2 diff bugs
* tests/init.sh (compare_dev_null_): Run diff in the C locale.
AIX 7.2 diff messes up in UTF-8 locales; for example,
/* alignof_slot (TYPE)
Determine the alignment of a structure slot (field) of a given type,
at compile time. Note that the result depends on the ABI.
- This is the same as alignof (TYPE) and _Alignof (TYPE).
+ This is the same as alignof (TYPE).
Note: The result cannot be used as a value for an 'enum' constant,
due to bugs in HP-UX 10.20 cc and AIX 3.2.5 xlc. */
#if defined __cplusplus
template <class type> struct alignof_helper { char __slot1; type __slot2; };
# define alignof_slot(type) offsetof (alignof_helper<type>, __slot2)
#else
-# define alignof_slot(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
+# define alignof_slot(type) alignof (type)
#endif
/* alignof_type (TYPE)