* top/maint.mk (_stddef_syms_re): Modernize for C23.
+2023-07-01 Paul Eggert <eggert@cs.ucla.edu>
+
+ maint.mk: Modernize stddef.h checks for C23
+ * top/maint.mk (_stddef_syms_re): Modernize for C23.
+
2023-07-01 Bruno Haible <bruno@clisp.org>
quotearg: Overcome wchar_t limitations.
re='\<($(_intprops_syms_re)) *\(' \
$(_sc_header_without_use)
-_stddef_syms_re = NULL|offsetof|ptrdiff_t|size_t|wchar_t
+_stddef_syms_re = \
+ NULL|max_align_t|nullptr_t|offsetof|ptrdiff_t|size_t|unreachable|wchar_t
# Prohibit the inclusion of stddef.h without an actual use.
sc_prohibit_stddef_without_use:
@h='stddef.h' \