Use Gnulib module alignasof instead of stdalign

* admin/merge-gnulib (GNULIB_MODULES):
Replace obsolescent Gnulib module stdalign with alignasof.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* lib/stdalign.in.h: Remove; no longer needed.

4 files changed, 3 insertions, 91 deletions

diff --git a/admin/merge-gnulib b/admin/merge-gnulib
index 7f4b6678a94..04e3e34b9f9 100755
--- a/admin/merge-gnulib
+++ b/admin/merge-gnulib
@@ -26,7 +26,7 @@
 GNULIB_URL=https://git.savannah.gnu.org/git/gnulib.git
 
 GNULIB_MODULES='
-  alloca-opt binary-io byteswap c-ctype c-strcase
+  alignasof alloca-opt binary-io byteswap c-ctype c-strcase
   canonicalize-lgpl
   careadlinkat close-stream copy-file-range
   count-leading-zeros count-one-bits count-trailing-zeros
@@ -44,7 +44,7 @@ GNULIB_MODULES='
   nanosleep nproc nstrftime
   pathmax pipe2 pselect pthread_sigmask
   qcopy-acl readlink readlinkat regex
-  sig2str sigdescr_np socklen stat-time std-gnu11 stdalign stdbool stddef stdio
+  sig2str sigdescr_np socklen stat-time std-gnu11 stdbool stddef stdio
   stpcpy strnlen strtoimax symlink sys_stat sys_time
   tempname time time_r time_rz timegm timer-time timespec-add timespec-sub
   update-copyright unlocked-io utimensat
diff --git a/lib/gnulib.mk.in b/lib/gnulib.mk.in
index 2e052465c79..53a821b141e 100644
--- a/lib/gnulib.mk.in
+++ b/lib/gnulib.mk.in
@@ -68,6 +68,7 @@
 #  --avoid=wchar \
 #  --avoid=wcrtomb \
 #  --avoid=wctype-h \
+#  alignasof \
 #  alloca-opt \
 #  binary-io \
 #  byteswap \
@@ -145,7 +146,6 @@
 #  socklen \
 #  stat-time \
 #  std-gnu11 \
-#  stdalign \
 #  stdbool \
 #  stddef \
 #  stdio \
@@ -325,7 +325,6 @@ GL_GENERATE_GMP_H_CONDITION = @GL_GENERATE_GMP_H_CONDITION@
 GL_GENERATE_IEEE754_H_CONDITION = @GL_GENERATE_IEEE754_H_CONDITION@
 GL_GENERATE_LIMITS_H_CONDITION = @GL_GENERATE_LIMITS_H_CONDITION@
 GL_GENERATE_MINI_GMP_H_CONDITION = @GL_GENERATE_MINI_GMP_H_CONDITION@
-GL_GENERATE_STDALIGN_H_CONDITION = @GL_GENERATE_STDALIGN_H_CONDITION@
 GL_GENERATE_STDCKDINT_H_CONDITION = @GL_GENERATE_STDCKDINT_H_CONDITION@
 GL_GENERATE_STDDEF_H_CONDITION = @GL_GENERATE_STDDEF_H_CONDITION@
 GL_GENERATE_STDINT_H_CONDITION = @GL_GENERATE_STDINT_H_CONDITION@
@@ -827,7 +826,6 @@ HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
 HAVE_SIGSET_T = @HAVE_SIGSET_T@
 HAVE_SLEEP = @HAVE_SLEEP@
 HAVE_SPAWN_H = @HAVE_SPAWN_H@
-HAVE_STDALIGN_H = @HAVE_STDALIGN_H@
 HAVE_STDINT_H = @HAVE_STDINT_H@
 HAVE_STPCPY = @HAVE_STPCPY@
 HAVE_STPNCPY = @HAVE_STPNCPY@
@@ -979,7 +977,6 @@ NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
 NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
 NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
 NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
-NEXT_AS_FIRST_DIRECTIVE_STDALIGN_H = @NEXT_AS_FIRST_DIRECTIVE_STDALIGN_H@
 NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
 NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
 NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
@@ -999,7 +996,6 @@ NEXT_GETOPT_H = @NEXT_GETOPT_H@
 NEXT_INTTYPES_H = @NEXT_INTTYPES_H@
 NEXT_LIMITS_H = @NEXT_LIMITS_H@
 NEXT_SIGNAL_H = @NEXT_SIGNAL_H@
-NEXT_STDALIGN_H = @NEXT_STDALIGN_H@
 NEXT_STDDEF_H = @NEXT_STDDEF_H@
 NEXT_STDINT_H = @NEXT_STDINT_H@
 NEXT_STDIO_H = @NEXT_STDIO_H@
@@ -1245,7 +1241,6 @@ SIZEOF_LONG = @SIZEOF_LONG@
 SIZE_T_SUFFIX = @SIZE_T_SUFFIX@
 SMALL_JA_DIC = @SMALL_JA_DIC@
 SQLITE3_LIBS = @SQLITE3_LIBS@
-STDALIGN_H = @STDALIGN_H@
 STDCKDINT_H = @STDCKDINT_H@
 STDDEF_H = @STDDEF_H@
 STDINT_H = @STDINT_H@
@@ -2933,35 +2928,6 @@ EXTRA_DIST += stat-time.h
 endif
 ## end   gnulib module stat-time
 
-## begin gnulib module stdalign
-ifeq (,$(OMIT_GNULIB_MODULE_stdalign))
-
-BUILT_SOURCES += $(STDALIGN_H)
-
-# We need the following in order to create <stdalign.h> when the system
-# doesn't have one that works.
-ifneq (,$(GL_GENERATE_STDALIGN_H_CONDITION))
-stdalign.h: stdalign.in.h $(top_builddir)/config.status
-        $(gl_V_at)$(SED_HEADER_STDOUT) \
-              -e 's|@''GUARD_PREFIX''@|GL|g' \
-              -e 's|@''HAVE_STDALIGN_H''@|$(HAVE_STDALIGN_H)|g' \
-              -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
-              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
-              -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
-              -e 's|@''NEXT_STDALIGN_H''@|$(NEXT_STDALIGN_H)|g' \
-              $(srcdir)/stdalign.in.h > $@-t
-        $(AM_V_at)mv $@-t $@
-else
-stdalign.h: $(top_builddir)/config.status
-        rm -f $@
-endif
-MOSTLYCLEANFILES += stdalign.h stdalign.h-t
-
-EXTRA_DIST += stdalign.in.h
-
-endif
-## end   gnulib module stdalign
-
 ## begin gnulib module stdckdint
 ifeq (,$(OMIT_GNULIB_MODULE_stdckdint))
 
diff --git a/lib/stdalign.in.h b/lib/stdalign.in.h
deleted file mode 100644
index b616c100fdc..00000000000
--- a/lib/stdalign.in.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* A substitute for ISO C11 <stdalign.h>.
-
-   Copyright 2011-2023 Free Software Foundation, Inc.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-/* Written by Paul Eggert and Bruno Haible.  */
-
-/* Define two obsolescent C11 macros, assuming alignas and alignof are
-   either keywords or alignasof-defined macros.  */
-
-#ifndef _@GUARD_PREFIX@_STDALIGN_H
-
-#if __GNUC__ >= 3
-@PRAGMA_SYSTEM_HEADER@
-#endif
-@PRAGMA_COLUMNS@
-
-/* We need to include the system's <stdalign.h> when it exists, because it might
-   define 'alignof' as a macro when it's not a keyword or compiler built-in.  */
-#if @HAVE_STDALIGN_H@
-/* The include_next requires a split double-inclusion guard.  */
-# @INCLUDE_NEXT@ @NEXT_STDALIGN_H@
-#endif
-
-#ifndef _@GUARD_PREFIX@_STDALIGN_H
-#define _@GUARD_PREFIX@_STDALIGN_H
-
-#if (defined alignas \
-     || (defined __STDC_VERSION__ && 202311 <= __STDC_VERSION__) \
-     || (defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER)))
-# define __alignas_is_defined 1
-#endif
-
-#define __alignof_is_defined 1
-
-#endif /* _@GUARD_PREFIX@_STDALIGN_H */
-#endif /* _@GUARD_PREFIX@_STDALIGN_H */
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index aacceb92258..0658652a99e 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -171,7 +171,6 @@ AC_DEFUN([gl_EARLY],
   # Code from module ssize_t:
   # Code from module stat-time:
   # Code from module std-gnu11:
-  # Code from module stdalign:
   # Code from module stdbool:
   # Code from module stdckdint:
   # Code from module stddef:
@@ -500,9 +499,6 @@ AC_DEFUN([gl_INIT],
   gt_TYPE_SSIZE_T
   gl_STAT_TIME
   gl_STAT_BIRTHTIME
-  gl_STDALIGN_H
-  gl_CONDITIONAL_HEADER([stdalign.h])
-  AC_PROG_MKDIR_P
   gl_C_BOOL
   AC_CHECK_HEADERS_ONCE([stdckdint.h])
   if test $ac_cv_header_stdckdint_h = yes; then
@@ -1377,7 +1373,6 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/signal.in.h
   lib/stat-time.c
   lib/stat-time.h
-  lib/stdalign.in.h
   lib/stdckdint.in.h
   lib/stddef.in.h
   lib/stdint.in.h